add test

Author: codingiran

Package@swift-5.9.swift

@@ -0,0 +1,35 @@
+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "AsyncTimer",
+    platforms: [
+        .macOS(.v10_15),
+        .iOS(.v13),
+        .tvOS(.v13),
+        .watchOS(.v6),
+        .macCatalyst(.v13),
+        .visionOS(.v1),
+    ],
+
+    products: [
+        // Products define the executables and libraries a package produces, making them visible to other packages.
+        .library(
+            name: "AsyncTimer",
+            targets: ["AsyncTimer"]
+        ),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package, defining a module or a test suite.
+        // Targets can depend on other targets in this package and products from dependencies.
+        .target(
+            name: "AsyncTimer"),
+        .testTarget(
+            name: "AsyncTimerTests",
+            dependencies: ["AsyncTimer"]
+        ),
+    ],
+    swiftLanguageVersions: [.v5]
+)

Sources/AsyncTimer/AsyncTimer.swift

@@ -95,6 +95,7 @@ public final actor AsyncTimer {
                 }
             } catch is CancellationError {
                 await cancelHandler?()
+                return
             } catch {}
         }
     }

Tests/AsyncTimerTests/AsyncTimerTests.swift

@@ -1,6 +1,128 @@
-import Testing
 @testable import AsyncTimer
+import Foundation
+import Testing
+
+// MARK: - AsyncTimerTests
+
+@Suite struct AsyncTimerTests {
+    // MARK: - One-time Timer Tests
+
+    @MainActor
+    @Test func oneTimeTimer() async throws {
+        var count = 0
+        let timer = AsyncTimer(
+            interval: 0.1,
+            repeating: false,
+            handler: {
+                @MainActor in
+                count += 1
+            }
+        )
+
+        await timer.start()
+        try await Task.sleep(nanoseconds: UInt64(0.2 * 1_000_000_000))
+
+        #expect(count == 1, "One-time timer should execute exactly once")
+    }
+
+    // MARK: - Repeating Timer Tests
+
+    @MainActor
+    @Test func repeatingTimer() async throws {
+        var count = 0
+        let timer = AsyncTimer(
+            interval: 0.1,
+            repeating: true,
+            firesImmediately: false,
+            handler: {
+                @MainActor in
+                count += 1
+            }
+        )
+
+        await timer.start()
+        try await Task.sleep(nanoseconds: UInt64(0.35 * 1_000_000_000))
+        await timer.stop()
+
+        #expect(count >= 3, "Repeating timer should execute at least 3 times")
+    }
+
+    // MARK: - Fires Immediately Tests
+
+    @MainActor
+    @Test func testFiresImmediately() async throws {
+        var executionTimes: [TimeInterval] = []
+        let startTime = Date().timeIntervalSince1970
+
+        let timer = AsyncTimer(
+            interval: 0.1,
+            repeating: true,
+            firesImmediately: true,
+            handler: {
+                @MainActor in
+                executionTimes.append(Date().timeIntervalSince1970 - startTime)
+            }
+        )
+
+        await timer.start()
+        try await Task.sleep(nanoseconds: UInt64(0.15 * 1_000_000_000))
+        await timer.stop()
+
+        #expect(!executionTimes.isEmpty, "Timer should execute at least once")
+        #expect(executionTimes[0] < 0.01, "First execution should happen almost immediately")
+    }
+
+    // MARK: - Set Interval Tests
+
+    @MainActor
+    @Test func testSetInterval() async throws {
+        var executionTimes: [TimeInterval] = []
+        let startTime = Date().timeIntervalSince1970
+
+        let timer = AsyncTimer(
+            interval: 0.2,
+            repeating: true,
+            handler: {
+                @MainActor in
+                executionTimes.append(Date().timeIntervalSince1970 - startTime)
+            }
+        )
+
+        await timer.start()
+        try await Task.sleep(nanoseconds: UInt64(0.3 * 1_000_000_000))
+        await timer.setInterval(0.1)
+        try await Task.sleep(nanoseconds: UInt64(0.2 * 1_000_000_000))
+        await timer.stop()
+
+        let intervals = zip(executionTimes, executionTimes.dropFirst())
+            .map { $1 - $0 }
+
+        #expect(intervals.contains { $0 < 0.15 }, "Intervals should become shorter after setting new interval")
+    }
+
+    // MARK: - Stop/Restart Tests
+
+    @MainActor
+    @Test func stopAndRestart() async throws {
+        var count = 0
+        let timer = AsyncTimer(
+            interval: 0.1,
+            repeating: true,
+            handler: {
+                @MainActor in
+                count += 1
+            }
+        )
+
+        await timer.start()
+        try await Task.sleep(nanoseconds: UInt64(0.15 * 1_000_000_000))
+        await timer.stop()
+        let countAfterStop = count
+        try await Task.sleep(nanoseconds: UInt64(0.2 * 1_000_000_000))
+        #expect(count == countAfterStop, "Count should not increase after stopping")
 
-@Test func example() async throws {
-    // Write your test here and use APIs like `#expect(...)` to check expected conditions.
+        await timer.restart()
+        try await Task.sleep(nanoseconds: UInt64(0.15 * 1_000_000_000))
+        #expect(count > countAfterStop, "Count should increase after restarting")
+    }
 }