1 files changed, 71 insertions, 0 deletions
diff --git a/MapTests/DebouncerTests.swift b/MapTests/DebouncerTests.swift
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+++ b/MapTests/DebouncerTests.swift
@@ -0,0 +1,71 @@
+// Copyright (C) 2024 Rubén Beltrán del Río
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+import Foundation
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see https://map.tranquil.systems.
+import Testing
+
+@testable import Map
+
+struct DebouncerTests {
+
+  @Test func testDebouncerExecutesAfterDelay() async throws {
+    let debouncer = Debouncer(seconds: 0.1)
+    var executed = false
+
+    debouncer.debounce {
+      executed = true
+    }
+
+    #expect(executed == false)
+
+    try await Task.sleep(nanoseconds: 150_000_000)  // 0.15 seconds
+
+    #expect(executed == true)
+  }
+
+  @Test func testDebouncerCancelsReplacement() async throws {
+    let debouncer = Debouncer(seconds: 0.1)
+    var firstExecuted = false
+    var secondExecuted = false
+
+    debouncer.debounce {
+      firstExecuted = true
+    }
+
+    debouncer.debounce {
+      secondExecuted = true
+    }
+
+    try await Task.sleep(nanoseconds: 150_000_000)  // 0.15 seconds
+
+    #expect(firstExecuted == false)
+    #expect(secondExecuted == true)
+  }
+
+  @Test func testDebouncerMultipleReplacements() async throws {
+    let debouncer = Debouncer(seconds: 0.1)
+    var counter = 0
+
+    for i in 1...5 {
+      debouncer.debounce {
+        counter += i
+      }
+    }
+
+    try await Task.sleep(nanoseconds: 150_000_000)  // 0.15 seconds
+
+    #expect(counter == 5)
+  }
+
+}