WIP: Unit tests

CoreStoreTests/OrderByTests.swift

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+//
+//  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)
+    }
+}