Update

Other Projects/SplitView/Tests/SplitViewTests/SplitViewTests.swift

@@ -0,0 +1,14 @@
+import XCTest
+@testable import SplitView
+
+final class SplitViewTests: XCTestCase {
+    func testExample() {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct
+        // results.
+    }
+
+    static var allTests = [
+        ("testExample", testExample),
+    ]
+}

Other Projects/SplitView/Tests/SplitViewTests/XCTestManifests.swift

@@ -0,0 +1,9 @@
+import XCTest
+
+#if !canImport(ObjectiveC)
+public func allTests() -> [XCTestCaseEntry] {
+    return [
+        testCase(SplitViewTests.allTests),
+    ]
+}
+#endif