WIP: Unit tests

CoreStoreTests/BaseTests/BaseTestCase.swift

@@ -36,7 +36,7 @@ class BaseTestCase: XCTestCase {
     // MARK: Internal
     
     @nonobjc
-    func prepareStack(configuration: String = "Config1", @noescape _ closure: (dataStack: DataStack) -> Void) {
+    func prepareStack(configurations configurations: [String?] = [nil], @noescape _ closure: (dataStack: DataStack) -> Void) {
         
         let stack = DataStack(
             modelName: "Model",
@@ -44,13 +44,16 @@ class BaseTestCase: XCTestCase {
         )
         do {
             
-            try stack.addStorageAndWait(
-                SQLiteStore(
-                    fileName: "\(self.dynamicType).sqlite",
-                    configuration: configuration,
-                    localStorageOptions: .RecreateStoreOnModelMismatch
+            try configurations.forEach {
+                
+                try stack.addStorageAndWait(
+                    SQLiteStore(
+                        fileName: "\(self.dynamicType)_\($0).sqlite",
+                        configuration: $0,
+                        localStorageOptions: .RecreateStoreOnModelMismatch
+                    )
                 )
-            )
+            }
         }
         catch let error as NSError {
             

CoreStoreTests/FromTests.swift

@@ -0,0 +1,389 @@
+//
+//  FromTests.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import XCTest
+
+@testable
+import CoreStore
+
+
+//MARK: - FromTests
+
+final class FromTests: BaseTestCase {
+    
+    @objc
+    dynamic func test_ThatFromClauses_ConfigureCorrectly() {
+        
+        do {
+            
+            let from = From()
+            XCTAssert(from.entityClass === NSManagedObject.self)
+            XCTAssertNil(from.dumpInfo)
+        }
+        do {
+            
+            let from = From<TestEntity1>()
+            XCTAssert(from.entityClass === TestEntity1.self)
+            XCTAssertNil(from.dumpInfo)
+        }
+        do {
+            
+            let from = From<TestEntity1>("Config1")
+            XCTAssert(from.entityClass === TestEntity1.self)
+            
+            let dumpInfo = from.dumpInfo
+            XCTAssertEqual(dumpInfo?.key, "configurations")
+            
+            let configurations = dumpInfo?.value as! [String?]
+            XCTAssertEqual(configurations.count, 1)
+            XCTAssertEqual(configurations[0], "Config1")
+        }
+        do {
+            
+            let from = From<TestEntity1>(nil, "Config1")
+            XCTAssert(from.entityClass === TestEntity1.self)
+            
+            let dumpInfo = from.dumpInfo
+            XCTAssertEqual(dumpInfo?.key, "configurations")
+            
+            let configurations = dumpInfo?.value as! [String?]
+            XCTAssertEqual(configurations.count, 2)
+            XCTAssertEqual(configurations[0], nil)
+            XCTAssertEqual(configurations[1], "Config1")
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatFromClauses_ApplyToFetchRequestsCorrectlyForDefaultConfigurations() {
+        
+        self.prepareStack(configurations: [nil]) { (dataStack) in
+            
+            do {
+                
+                let from = From<TestEntity1>()
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(affectedConfigurations, ["PF_DEFAULT_CONFIGURATION_NAME"])
+            }
+            do {
+                
+                let from = From<TestEntity1>("Config1")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatFromClauses_ApplyToFetchRequestsCorrectlyForSingleConfigurations() {
+        
+        self.prepareStack(configurations: ["Config1"]) { (dataStack) in
+            
+            do {
+                
+                let from = From<TestEntity1>()
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(affectedConfigurations, ["Config1"])
+            }
+            do {
+                
+                let from = From<TestEntity1>("Config1")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(affectedConfigurations, ["Config1"])
+            }
+            do {
+                
+                let from = From<TestEntity1>("Config2")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+            do {
+                
+                let from = From<TestEntity2>()
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+            do {
+                
+                let from = From<TestEntity2>("Config1")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+            do {
+                
+                let from = From<TestEntity2>("Config2")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatFromClauses_ApplyToFetchRequestsCorrectlyForDefaultAndCustomConfigurations() {
+        
+        self.prepareStack(configurations: [nil, "Config1"]) { (dataStack) in
+            
+            do {
+                
+                let from = From<TestEntity1>()
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(Set(affectedConfigurations), ["PF_DEFAULT_CONFIGURATION_NAME", "Config1"] as Set)
+            }
+            do {
+                
+                let from = From<TestEntity1>("Config1")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(affectedConfigurations, ["Config1"])
+            }
+            do {
+                
+                let from = From<TestEntity1>("Config2")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+            do {
+                
+                let from = From<TestEntity2>()
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(affectedConfigurations, ["PF_DEFAULT_CONFIGURATION_NAME"])
+            }
+            do {
+                
+                let from = From<TestEntity2>("Config1")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+            do {
+                
+                let from = From<TestEntity2>("Config2")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatFromClauses_ApplyToFetchRequestsCorrectlyForMultipleConfigurations() {
+        
+        self.prepareStack(configurations: ["Config1", "Config2"]) { (dataStack) in
+            
+            do {
+                
+                let from = From<TestEntity1>()
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(affectedConfigurations, ["Config1"])
+            }
+            do {
+                
+                let from = From<TestEntity1>("Config1")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(affectedConfigurations, ["Config1"])
+            }
+            do {
+                
+                let from = From<TestEntity1>("Config2")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+            do {
+                
+                let from = From<TestEntity2>()
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(affectedConfigurations, ["Config2"])
+            }
+            do {
+                
+                let from = From<TestEntity2>("Config1")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertTrue(affectedConfigurations.isEmpty)
+            }
+            do {
+                
+                let from = From<TestEntity2>("Config2")
+                
+                let request = NSFetchRequest()
+                from.applyToFetchRequest(request, context: dataStack.mainContext)
+                XCTAssertNotNil(request.entity)
+                XCTAssertNotNil(request.affectedStores)
+                
+                XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
+                
+                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                XCTAssertEqual(affectedConfigurations, ["Config2"])
+            }
+        }
+    }
+}

CoreStoreTests/GroupByTests.swift

@@ -0,0 +1,81 @@
+//
+//  GroupByTests.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import XCTest
+
+@testable
+import CoreStore
+
+
+//MARK: - GroupByTests
+
+final class GroupByTests: BaseTestCase {
+    
+    @objc
+    dynamic func test_ThatGroupByClauses_ConfigureCorrectly() {
+        
+        do {
+            
+            let groupBy = GroupBy()
+            XCTAssertEqual(groupBy, GroupBy([] as [String]))
+            XCTAssertNotEqual(groupBy, GroupBy("key"))
+            XCTAssertTrue(groupBy.keyPaths.isEmpty)
+        }
+        do {
+            
+            let groupBy = GroupBy("key1")
+            XCTAssertEqual(groupBy, GroupBy("key1"))
+            XCTAssertEqual(groupBy, GroupBy(["key1"]))
+            XCTAssertNotEqual(groupBy, GroupBy("key2"))
+            XCTAssertEqual(groupBy.keyPaths, ["key1"])
+        }
+        do {
+            
+            let groupBy = GroupBy("key1", "key2")
+            XCTAssertEqual(groupBy, GroupBy("key1", "key2"))
+            XCTAssertEqual(groupBy, GroupBy(["key1", "key2"]))
+            XCTAssertNotEqual(groupBy, GroupBy("key2", "key1"))
+            XCTAssertEqual(groupBy.keyPaths, ["key1", "key2"])
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatGroupByClauses_ApplyToFetchRequestsCorrectly() {
+        
+        self.prepareStack { (dataStack) in
+            
+            let groupBy = GroupBy("testString")
+            
+            let request = NSFetchRequest()
+            From(TestEntity1).applyToFetchRequest(request, context: dataStack.mainContext)
+            groupBy.applyToFetchRequest(request)
+            
+            XCTAssertNotNil(request.propertiesToGroupBy)
+            
+            let attributes = (request.propertiesToGroupBy ?? []) as! [NSAttributeDescription]
+            XCTAssertEqual(attributes.map { $0.name }, groupBy.keyPaths)
+        }
+    }
+}

CoreStoreTests/IntoTests.swift

@@ -0,0 +1,204 @@
+//
+//  IntoTests.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import XCTest
+
+@testable
+import CoreStore
+
+
+//MARK: - IntoTests
+
+final class IntoTests: XCTestCase {
+    
+    @objc
+    dynamic func test_ThatIntoClauseConstants_AreCorrect() {
+        
+        XCTAssertEqual(Into<NSManagedObject>.defaultConfigurationName, "PF_DEFAULT_CONFIGURATION_NAME")
+    }
+    
+    @objc
+    dynamic func test_ThatIntoClauses_ConfigureCorrectly() {
+        
+        do {
+            
+            let into = Into()
+            XCTAssert(into.entityClass === NSManagedObject.self)
+            XCTAssertNil(into.configuration)
+            XCTAssertTrue(into.inferStoreIfPossible)
+        }
+        do {
+            
+            let into = Into<TestEntity1>()
+            XCTAssert(into.entityClass === TestEntity1.self)
+            XCTAssertNil(into.configuration)
+            XCTAssertTrue(into.inferStoreIfPossible)
+        }
+        do {
+            
+            let into = Into(TestEntity1)
+            XCTAssert(into.entityClass === TestEntity1.self)
+            XCTAssertNil(into.configuration)
+            XCTAssertTrue(into.inferStoreIfPossible)
+        }
+        do {
+            
+            let into = Into(TestEntity1.self as AnyClass)
+            XCTAssert(into.entityClass === TestEntity1.self)
+            XCTAssertNil(into.configuration)
+            XCTAssertTrue(into.inferStoreIfPossible)
+        }
+        do {
+            
+            let into = Into<TestEntity1>("Config1")
+            XCTAssert(into.entityClass === TestEntity1.self)
+            XCTAssertEqual(into.configuration, "Config1")
+            XCTAssertFalse(into.inferStoreIfPossible)
+        }
+        do {
+            
+            let into = Into(TestEntity1.self, "Config1")
+            XCTAssert(into.entityClass === TestEntity1.self)
+            XCTAssertEqual(into.configuration, "Config1")
+            XCTAssertFalse(into.inferStoreIfPossible)
+        }
+        do {
+            
+            let into = Into(TestEntity1.self as AnyClass, "Config1")
+            XCTAssert(into.entityClass === TestEntity1.self)
+            XCTAssertEqual(into.configuration, "Config1")
+            XCTAssertFalse(into.inferStoreIfPossible)
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatIntoClauses_AreEquatable() {
+        
+        do {
+            
+            let into = Into()
+            XCTAssertEqual(into, Into())
+            XCTAssertEqual(into, Into<NSManagedObject>())
+            XCTAssertEqual(into, Into(NSManagedObject.self as AnyClass))
+            XCTAssertFalse(into == Into<TestEntity1>())
+            XCTAssertNotEqual(into, Into<NSManagedObject>("Config1"))
+        }
+        do {
+            
+            let into = Into<TestEntity1>()
+            XCTAssertEqual(into, Into(TestEntity1))
+            XCTAssertEqual(into, Into(TestEntity1.self as AnyClass))
+            XCTAssertFalse(into == Into<TestEntity2>())
+            XCTAssertNotEqual(into, Into<TestEntity1>("Config1"))
+        }
+        do {
+            
+            let into = Into(TestEntity1)
+            XCTAssertEqual(into, Into<TestEntity1>())
+            XCTAssertEqual(into, Into(TestEntity1.self as AnyClass))
+            XCTAssertFalse(into == Into<TestEntity2>())
+            XCTAssertNotEqual(into, Into<TestEntity1>("Config1"))
+        }
+        do {
+            
+            let into = Into(TestEntity1.self as AnyClass)
+            XCTAssert(into == Into<TestEntity1>())
+            XCTAssertEqual(into, Into(TestEntity1))
+            XCTAssertFalse(into == Into<TestEntity2>())
+            XCTAssertFalse(into == Into<TestEntity1>("Config1"))
+        }
+        do {
+            
+            let into = Into<TestEntity1>("Config1")
+            XCTAssertEqual(into, Into(TestEntity1.self, "Config1"))
+            XCTAssertEqual(into, Into(TestEntity1.self as AnyClass, "Config1"))
+            XCTAssertFalse(into == Into<TestEntity2>("Config1"))
+            XCTAssertNotEqual(into, Into<TestEntity1>("Config2"))
+        }
+        do {
+            
+            let into = Into(TestEntity1.self, "Config1")
+            XCTAssertEqual(into, Into(TestEntity1.self, "Config1"))
+            XCTAssertEqual(into, Into<TestEntity1>("Config1"))
+            XCTAssertFalse(into == Into<TestEntity2>("Config1"))
+            XCTAssertNotEqual(into, Into<TestEntity1>("Config2"))
+        }
+        do {
+            
+            let into = Into(TestEntity1.self as AnyClass, "Config1")
+            XCTAssert(into == Into<TestEntity1>("Config1"))
+            XCTAssertEqual(into, Into(TestEntity1.self, "Config1"))
+            XCTAssertFalse(into == Into<TestEntity2>("Config1"))
+            XCTAssertFalse(into == Into<TestEntity1>("Config2"))
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatIntoClauses_BridgeCorrectly() {
+        
+        do {
+            
+            let into = Into()
+            let objcInto = into.bridgeToObjectiveC
+            XCTAssertEqual(into, objcInto.bridgeToSwift)
+        }
+        do {
+            
+            let into = Into<TestEntity1>()
+            let objcInto = into.bridgeToObjectiveC
+            XCTAssertTrue(into == objcInto.bridgeToSwift)
+        }
+        do {
+            
+            let into = Into(TestEntity1.self as AnyClass)
+            let objcInto = into.bridgeToObjectiveC
+            XCTAssertEqual(into, objcInto.bridgeToSwift)
+        }
+        do {
+            
+            let into = Into(TestEntity1.self as AnyClass)
+            let objcInto = into.bridgeToObjectiveC
+            XCTAssertEqual(into, objcInto.bridgeToSwift)
+        }
+        do {
+            
+            let into = Into<TestEntity1>("Config1")
+            let objcInto = into.bridgeToObjectiveC
+            XCTAssertTrue(into == objcInto.bridgeToSwift)
+        }
+        do {
+            
+            let into = Into(TestEntity1.self, "Config1")
+            let objcInto = into.bridgeToObjectiveC
+            XCTAssertTrue(into == objcInto.bridgeToSwift)
+        }
+        do {
+            
+            let into = Into(TestEntity1.self as AnyClass, "Config1")
+            let objcInto = into.bridgeToObjectiveC
+            XCTAssertTrue(into == objcInto.bridgeToSwift)
+        }
+    }
+}

CoreStoreTests/OrderByTests.swift

@@ -0,0 +1,187 @@
+//
+//  OrderByTests.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import XCTest
+
+@testable
+import CoreStore
+
+
+//MARK: - OrderByTests
+
+final class OrderByTests: XCTestCase {
+    
+    @objc
+    dynamic func test_ThatOrderByClauses_ConfigureCorrectly() {
+        
+        do {
+            
+            let orderBy = OrderBy()
+            XCTAssertEqual(orderBy, OrderBy([] as [NSSortDescriptor]))
+            XCTAssertNotEqual(orderBy, OrderBy(NSSortDescriptor(key: "key", ascending: false)))
+            XCTAssertTrue(orderBy.sortDescriptors.isEmpty)
+        }
+        do {
+            
+            let sortDescriptor = NSSortDescriptor(key: "key1", ascending: true)
+            let orderBy = OrderBy(sortDescriptor)
+            XCTAssertEqual(orderBy, OrderBy(sortDescriptor))
+            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy(.Descending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy(NSSortDescriptor(key: "key1", ascending: false)))
+            XCTAssertEqual(orderBy, OrderBy([sortDescriptor]))
+            XCTAssertEqual(orderBy.sortDescriptors, [sortDescriptor])
+        }
+        do {
+            
+            let sortDescriptors = [
+                NSSortDescriptor(key: "key1", ascending: true),
+                NSSortDescriptor(key: "key2", ascending: false)
+            ]
+            let orderBy = OrderBy(sortDescriptors)
+            XCTAssertEqual(orderBy, OrderBy(sortDescriptors))
+            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key2")))
+            XCTAssertNotEqual(
+                orderBy,
+                OrderBy(
+                    [
+                        NSSortDescriptor(key: "key1", ascending: false),
+                        NSSortDescriptor(key: "key2", ascending: false)
+                    ]
+                )
+            )
+            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key3")))
+            XCTAssertEqual(orderBy.sortDescriptors, sortDescriptors)
+        }
+        do {
+            
+            let orderBy = OrderBy(.Ascending("key1"))
+            let sortDescriptor = NSSortDescriptor(key: "key1", ascending: true)
+            XCTAssertEqual(orderBy, OrderBy(sortDescriptor))
+            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy(.Descending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key2")))
+            XCTAssertEqual(orderBy, OrderBy([sortDescriptor]))
+            XCTAssertEqual(orderBy.sortDescriptors, [sortDescriptor])
+        }
+        do {
+            
+            let orderBy = OrderBy(.Ascending("key1"), .Descending("key2"))
+            let sortDescriptors = [
+                NSSortDescriptor(key: "key1", ascending: true),
+                NSSortDescriptor(key: "key2", ascending: false)
+            ]
+            XCTAssertEqual(orderBy, OrderBy(sortDescriptors))
+            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key2")))
+            XCTAssertNotEqual(
+                orderBy,
+                OrderBy(
+                    [
+                        NSSortDescriptor(key: "key1", ascending: false),
+                        NSSortDescriptor(key: "key2", ascending: false)
+                    ]
+                )
+            )
+            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key3")))
+            XCTAssertEqual(orderBy.sortDescriptors, sortDescriptors)
+        }
+        do {
+            
+            let sortKeys: [SortKey] = [.Ascending("key1"), .Descending("key2")]
+            let orderBy = OrderBy(sortKeys)
+            let sortDescriptors = [
+                NSSortDescriptor(key: "key1", ascending: true),
+                NSSortDescriptor(key: "key2", ascending: false)
+            ]
+            XCTAssertEqual(orderBy, OrderBy(sortDescriptors))
+            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key2")))
+            XCTAssertNotEqual(
+                orderBy,
+                OrderBy(
+                    [
+                        NSSortDescriptor(key: "key1", ascending: false),
+                        NSSortDescriptor(key: "key2", ascending: false)
+                    ]
+                )
+            )
+            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key3")))
+            XCTAssertEqual(orderBy.sortDescriptors, sortDescriptors)
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatOrderByClauseOperations_ComputeCorrectly() {
+        
+        let orderBy1 = OrderBy(.Ascending("key1"))
+        let orderBy2 = OrderBy(.Descending("key2"))
+        let orderBy3 = OrderBy(.Ascending("key3"))
+        
+        do {
+            
+            let plusOrderBy = orderBy1 + orderBy2 + orderBy3
+            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1"), .Descending("key2"), .Ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1")) + OrderBy(.Descending("key2"), .Ascending("key3")))
+            XCTAssertNotEqual(plusOrderBy, orderBy1 + orderBy3 + orderBy2)
+            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy1 + orderBy3)
+            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy3 + orderBy1)
+            XCTAssertNotEqual(plusOrderBy, orderBy3 + orderBy1 + orderBy2)
+            XCTAssertNotEqual(plusOrderBy, orderBy3 + orderBy2 + orderBy1)
+            XCTAssertEqual(plusOrderBy.sortDescriptors, orderBy1.sortDescriptors + orderBy2.sortDescriptors + orderBy3.sortDescriptors)
+        }
+        do {
+            
+            var plusOrderBy = orderBy1
+            plusOrderBy += orderBy2
+            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1"), .Descending("key2")))
+            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1")) + OrderBy(.Descending("key2")))
+            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy1)
+            XCTAssertEqual(plusOrderBy.sortDescriptors, orderBy1.sortDescriptors + orderBy2.sortDescriptors)
+            
+            plusOrderBy += orderBy3
+            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1"), .Descending("key2"), .Ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1"), .Descending("key2")) + OrderBy(.Ascending("key3")))
+            XCTAssertNotEqual(plusOrderBy, orderBy1 + orderBy3 + orderBy2)
+            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy1 + orderBy3)
+            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy3 + orderBy1)
+            XCTAssertNotEqual(plusOrderBy, orderBy3 + orderBy1 + orderBy2)
+            XCTAssertNotEqual(plusOrderBy, orderBy3 + orderBy2 + orderBy1)
+            XCTAssertEqual(plusOrderBy.sortDescriptors, orderBy1.sortDescriptors + orderBy2.sortDescriptors + orderBy3.sortDescriptors)
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatOrderByClauses_ApplyToFetchRequestsCorrectly() {
+        
+        let orderBy = OrderBy(.Ascending("key"))
+        let request = NSFetchRequest()
+        orderBy.applyToFetchRequest(request)
+        XCTAssertNotNil(request.sortDescriptors)
+        XCTAssertEqual(request.sortDescriptors ?? [], orderBy.sortDescriptors)
+    }
+}

CoreStoreTests/SelectTests.swift

@@ -0,0 +1,420 @@
+//
+//  SelectTests.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import XCTest
+
+@testable
+import CoreStore
+
+
+//MARK: - SelectTests
+
+final class SelectTests: XCTestCase {
+    
+    @objc
+    dynamic func test_ThatAttributeSelectTerms_ConfigureCorrectly() {
+        
+        do {
+            
+            let term: SelectTerm = "attribute"
+            XCTAssertEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Attribute(let key):
+                XCTAssertEqual(key, "attribute")
+                
+            default:
+                XCTFail()
+            }
+        }
+        do {
+            
+            let term = SelectTerm.Attribute("attribute")
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Attribute(let key):
+                XCTAssertEqual(key, "attribute")
+                
+            default:
+                XCTFail()
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatAverageSelectTerms_ConfigureCorrectly() {
+        
+        do {
+            
+            let term = SelectTerm.Average("attribute")
+            XCTAssertEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "average:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "average(attribute)")
+                XCTAssertTrue(nativeType == .DecimalAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+        do {
+            
+            let term = SelectTerm.Average("attribute", As: "alias")
+            XCTAssertEqual(term, SelectTerm.Average("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute", As: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "average:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "alias")
+                XCTAssertTrue(nativeType == .DecimalAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatCountSelectTerms_ConfigureCorrectly() {
+        
+        do {
+            
+            let term = SelectTerm.Count("attribute")
+            XCTAssertEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "count:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "count(attribute)")
+                XCTAssertTrue(nativeType == .Integer64AttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+        do {
+            
+            let term = SelectTerm.Count("attribute", As: "alias")
+            XCTAssertEqual(term, SelectTerm.Count("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute", As: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "count:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "alias")
+                XCTAssertTrue(nativeType == .Integer64AttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatMaximumSelectTerms_ConfigureCorrectly() {
+        
+        do {
+            
+            let term = SelectTerm.Maximum("attribute")
+            XCTAssertEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "max:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "max(attribute)")
+                XCTAssertTrue(nativeType == .UndefinedAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+        do {
+            
+            let term = SelectTerm.Maximum("attribute", As: "alias")
+            XCTAssertEqual(term, SelectTerm.Maximum("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute", As: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "max:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "alias")
+                XCTAssertTrue(nativeType == .UndefinedAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatMinimumSelectTerms_ConfigureCorrectly() {
+        
+        do {
+            
+            let term = SelectTerm.Minimum("attribute")
+            XCTAssertEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "min:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "min(attribute)")
+                XCTAssertTrue(nativeType == .UndefinedAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+        do {
+            
+            let term = SelectTerm.Minimum("attribute", As: "alias")
+            XCTAssertEqual(term, SelectTerm.Minimum("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute", As: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "min:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "alias")
+                XCTAssertTrue(nativeType == .UndefinedAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatSumSelectTerms_ConfigureCorrectly() {
+        
+        do {
+            
+            let term = SelectTerm.Sum("attribute")
+            XCTAssertEqual(term, SelectTerm.Sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "sum:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "sum(attribute)")
+                XCTAssertTrue(nativeType == .DecimalAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+        do {
+            
+            let term = SelectTerm.Sum("attribute", As: "alias")
+            XCTAssertEqual(term, SelectTerm.Sum("attribute", As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute", As: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            switch term {
+                
+            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+                XCTAssertEqual(function, "sum:")
+                XCTAssertEqual(keyPath, "attribute")
+                XCTAssertEqual(alias, "alias")
+                XCTAssertTrue(nativeType == .DecimalAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatObjectIDSelectTerms_ConfigureCorrectly() {
+        
+        do {
+            
+            let term = SelectTerm.ObjectID()
+            XCTAssertEqual(term, SelectTerm.ObjectID())
+            XCTAssertNotEqual(term, SelectTerm.ObjectID(As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            switch term {
+                
+            case ._Identity(let alias, let nativeType):
+                XCTAssertEqual(alias, "objectID")
+                XCTAssertTrue(nativeType == .ObjectIDAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+        do {
+            
+            let term = SelectTerm.ObjectID(As: "alias")
+            XCTAssertEqual(term, SelectTerm.ObjectID(As: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID(As: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            switch term {
+                
+            case ._Identity(let alias, let nativeType):
+                XCTAssertEqual(alias, "alias")
+                XCTAssertTrue(nativeType == .ObjectIDAttributeType)
+                
+            default:
+                XCTFail()
+            }
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatSelectClauses_ConfigureCorrectly() {
+        
+        let term1 = SelectTerm.Attribute("attribute1")
+        let term2 = SelectTerm.Attribute("attribute2")
+        let term3 = SelectTerm.Attribute("attribute3")
+        do {
+            
+            let select = Select<Int>(term1, term2, term3)
+            XCTAssertEqual(select.selectTerms, [term1, term2, term3])
+            XCTAssertNotEqual(select.selectTerms, [term1, term3, term2])
+            XCTAssertNotEqual(select.selectTerms, [term2, term1, term3])
+            XCTAssertNotEqual(select.selectTerms, [term2, term3, term1])
+            XCTAssertNotEqual(select.selectTerms, [term3, term1, term2])
+            XCTAssertNotEqual(select.selectTerms, [term3, term2, term1])
+        }
+        do {
+            
+            let select = Select<Int>([term1, term2, term3])
+            XCTAssertEqual(select.selectTerms, [term1, term2, term3])
+            XCTAssertNotEqual(select.selectTerms, [term1, term3, term2])
+            XCTAssertNotEqual(select.selectTerms, [term2, term1, term3])
+            XCTAssertNotEqual(select.selectTerms, [term2, term3, term1])
+            XCTAssertNotEqual(select.selectTerms, [term3, term1, term2])
+            XCTAssertNotEqual(select.selectTerms, [term3, term2, term1])
+        }
+    }
+}

CoreStoreTests/TweakTests.swift

@@ -1,5 +1,5 @@
 //
-//  ClauseTests.swift
+//  TweakTests.swift
 //  CoreStore
 //
 //  Copyright © 2016 John Rommel Estropia
@@ -29,15 +29,25 @@ import XCTest
 import CoreStore
 
 
-//MARK: - ClauseTests
+//MARK: - TweakTests
 
-final class ClauseTests: XCTestCase {
-    
-    // MARK: Into
+final class TweakTests: XCTestCase {
     
     @objc
-    dynamic func test_IntoClauses_ConfigureCorrectly() {
+    dynamic func test_ThatTweakClauses_ApplyToFetchRequestsCorrectly() {
         
-        // TODO:
+        let predicate = NSPredicate(format: "%K == %@", "key", "value")
+        let tweak = Tweak {
+            
+            $0.fetchOffset = 100
+            $0.fetchLimit = 200
+            $0.predicate = predicate
+        }
+        let request = NSFetchRequest()
+        tweak.applyToFetchRequest(request)
+        XCTAssertEqual(request.fetchOffset, 100)
+        XCTAssertEqual(request.fetchLimit, 200)
+        XCTAssertNotNil(request.predicate)
+        XCTAssertEqual(request.predicate, predicate)
     }
 }

CoreStoreTests/WhereTests.swift

@@ -0,0 +1,150 @@
+//
+//  WhereTests.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import XCTest
+
+@testable
+import CoreStore
+
+
+//MARK: - WhereTests
+
+final class WhereTests: XCTestCase {
+    
+    @objc
+    dynamic func test_ThatWhereClauses_ConfigureCorrectly() {
+        
+        do {
+            
+            let whereClause = Where()
+            XCTAssertEqual(whereClause, Where(true))
+            XCTAssertNotEqual(whereClause, Where(false))
+            XCTAssertEqual(whereClause.predicate, NSPredicate(value: true))
+        }
+        do {
+            
+            let whereClause = Where(true)
+            XCTAssertEqual(whereClause, Where())
+            XCTAssertNotEqual(whereClause, Where(false))
+            XCTAssertEqual(whereClause.predicate, NSPredicate(value: true))
+        }
+        do {
+            
+            let predicate = NSPredicate(format: "%K == %@", "key", "value")
+            let whereClause = Where(predicate)
+            XCTAssertEqual(whereClause, Where(predicate))
+            XCTAssertEqual(whereClause.predicate, predicate)
+        }
+        do {
+            
+            let whereClause = Where("%K == %@", "key", "value")
+            let predicate = NSPredicate(format: "%K == %@", "key", "value")
+            XCTAssertEqual(whereClause, Where(predicate))
+            XCTAssertEqual(whereClause.predicate, predicate)
+        }
+        do {
+            
+            let whereClause = Where("%K == %@", argumentArray: ["key", "value"])
+            let predicate = NSPredicate(format: "%K == %@", "key", "value")
+            XCTAssertEqual(whereClause, Where(predicate))
+            XCTAssertEqual(whereClause.predicate, predicate)
+        }
+        do {
+            
+            let whereClause = Where("key", isEqualTo: "value")
+            let predicate = NSPredicate(format: "%K == %@", "key", "value")
+            XCTAssertEqual(whereClause, Where(predicate))
+            XCTAssertEqual(whereClause.predicate, predicate)
+        }
+        do {
+            
+            let whereClause = Where("key", isMemberOf: ["value1", "value2", "value3"])
+            let predicate = NSPredicate(format: "%K IN %@", "key", ["value1", "value2", "value3"])
+            XCTAssertEqual(whereClause, Where(predicate))
+            XCTAssertEqual(whereClause.predicate, predicate)
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatWhereClauseOperations_ComputeCorrectly() {
+        
+        let whereClause1 = Where("key1", isEqualTo: "value1")
+        let whereClause2 = Where("key2", isEqualTo: "value2")
+        let whereClause3 = Where("key3", isEqualTo: "value3")
+        
+        do {
+            
+            let notWhere = !whereClause1
+            let notPredicate = NSCompoundPredicate(
+                type: .NotPredicateType,
+                subpredicates: [whereClause1.predicate]
+            )
+            XCTAssertEqual(notWhere.predicate, notPredicate)
+            XCTAssertEqual(notWhere, !whereClause1)
+        }
+        do {
+            
+            let andWhere = whereClause1 && whereClause2 && whereClause3
+            let andPredicate = NSCompoundPredicate(
+                type: .AndPredicateType,
+                subpredicates: [
+                    NSCompoundPredicate(
+                        type: .AndPredicateType,
+                        subpredicates: [whereClause1.predicate, whereClause2.predicate]
+                    ),
+                    whereClause3.predicate
+                ]
+            )
+            XCTAssertEqual(andWhere.predicate, andPredicate)
+            XCTAssertEqual(andWhere, whereClause1 && whereClause2 && whereClause3)
+        }
+        do {
+            
+            let orWhere = whereClause1 || whereClause2 || whereClause3
+            let orPredicate = NSCompoundPredicate(
+                type: .OrPredicateType,
+                subpredicates: [
+                    NSCompoundPredicate(
+                        type: .OrPredicateType,
+                        subpredicates: [whereClause1.predicate, whereClause2.predicate]
+                    ),
+                    whereClause3.predicate
+                ]
+            )
+            XCTAssertEqual(orWhere.predicate, orPredicate)
+            XCTAssertEqual(orWhere, whereClause1 || whereClause2 || whereClause3)
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatWhereClauses_ApplyToFetchRequestsCorrectly() {
+        
+        let whereClause = Where("key", isEqualTo: "value")
+        let request = NSFetchRequest()
+        whereClause.applyToFetchRequest(request)
+        XCTAssertNotNil(request.predicate)
+        XCTAssertEqual(request.predicate, whereClause.predicate)
+    }
+}