test: add unit tests for PR#31 (#33)

* test: add unit tests for PR#31

* Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Karan Mohindroo <96403086+NullPointerDepressiveDisorder@users.noreply.github.com>

* Rename test and improve isAvailable validation

Updated test to ensure isAvailable method does not crash and returns consistent results.

Signed-off-by: Karan Mohindroo <96403086+NullPointerDepressiveDisorder@users.noreply.github.com>

---------

Signed-off-by: Karan Mohindroo <96403086+NullPointerDepressiveDisorder@users.noreply.github.com>
Co-authored-by: seer-by-sentry[bot] <157164994+seer-by-sentry[bot]@users.noreply.github.com>
Co-authored-by: Karan Mohindroo <96403086+NullPointerDepressiveDisorder@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: 3 people

MiddleDragTests/AnalyticsManagerTests.swift

@@ -92,4 +92,4 @@ final class AnalyticsManagerTests: XCTestCase {
         Log.error("Test error default")
         Log.fatal("Test fatal default")
     }
-}
+}

MiddleDragTests/MouseEventGeneratorTests.swift

@@ -100,4 +100,4 @@ final class MouseEventGeneratorTests: XCTestCase {
         XCTAssertTrue(location.x.isFinite)
         XCTAssertTrue(location.y.isFinite)
     }
-}
+}

MiddleDragTests/MultitouchFrameworkTests.swift

@@ -0,0 +1,41 @@
+import XCTest
+
+@testable import MiddleDrag
+
+final class MultitouchFrameworkTests: XCTestCase {
+
+    // MARK: - Singleton Tests
+
+    func testMultitouchFrameworkIsSingleton() {
+        let instance1 = MultitouchFramework.shared
+        let instance2 = MultitouchFramework.shared
+        XCTAssertTrue(instance1 === instance2)
+    }
+
+    // MARK: - Device Availability Tests
+
+    func testIsAvailableDoesNotCrash() {
+        let framework = MultitouchFramework.shared
+        let isAvailable1 = framework.isAvailable
+        let isAvailable2 = framework.isAvailable
+        // Verify that calling isAvailable does not crash and returns a consistent value
+        XCTAssertEqual(isAvailable1, isAvailable2)
+    }
+
+    func testGetDefaultDeviceDoesNotCrash() {
+        let framework = MultitouchFramework.shared
+        let device = framework.getDefaultDevice()
+        let deviceAgain = framework.getDefaultDevice()
+        // Verify that calling getDefaultDevice() does not crash and returns a consistent value
+        XCTAssertEqual(device, deviceAgain)
+    }
+
+    func testGetDefaultDeviceReturnsConsistentValue() {
+        let framework = MultitouchFramework.shared
+        let device1 = framework.getDefaultDevice()
+        let device2 = framework.getDefaultDevice()
+        // Verify that repeated calls are consistent in availability (both nil or both non-nil),
+        // without relying on pointer identity, which may legitimately differ.
+        XCTAssertEqual(device1 != nil, device2 != nil)
+    }
+}

MiddleDragTests/PreferencesManagerTests.swift

@@ -144,4 +144,4 @@ final class PreferencesManagerTests: XCTestCase {
         let instance2 = PreferencesManager.shared
         XCTAssertTrue(instance1 === instance2)
     }
-}
+}