Merge pull request #761 from shgusgh12/main

[view] debounce, throttle 테스트 코드 작성

packages/view/src/utils/debounce.test.ts

@@ -0,0 +1,35 @@
+import { debounce } from "./debounce";
+
+jest.useFakeTimers();
+
+describe("debounce", () => {
+  it("check debounce", () => {
+    const mockFn = jest.fn();
+    const debouncedFunc = debounce(mockFn, 1000);
+
+    debouncedFunc("test1");
+    debouncedFunc("test2");
+
+    expect(mockFn).not.toBeCalled();
+
+    jest.advanceTimersByTime(999);
+    expect(mockFn).not.toBeCalled();
+
+    jest.advanceTimersByTime(1);
+    expect(mockFn).toHaveBeenCalledTimes(1);
+    expect(mockFn).toHaveBeenCalledWith("test2");
+  });
+
+  it("check default delay", () => {
+    const mockFn = jest.fn();
+    const debouncedFunc = debounce(mockFn);
+
+    debouncedFunc("test");
+
+    jest.advanceTimersByTime(999);
+    expect(mockFn).not.toBeCalled();
+
+    jest.advanceTimersByTime(1);
+    expect(mockFn).toHaveBeenCalledTimes(1);
+  });
+});

packages/view/src/utils/throttle.test.ts

@@ -0,0 +1,41 @@
+import { throttle } from "./throttle";
+
+jest.useFakeTimers();
+
+describe("throttle", () => {
+  it("check throttle", () => {
+    const mockFn = jest.fn();
+    const throttledFunc = throttle(mockFn, 1000);
+
+    throttledFunc();
+    expect(mockFn).toHaveBeenCalledTimes(1);
+
+    throttledFunc();
+    throttledFunc();
+    expect(mockFn).toHaveBeenCalledTimes(1);
+
+    jest.advanceTimersByTime(999);
+    throttledFunc();
+    expect(mockFn).toHaveBeenCalledTimes(1);
+
+    jest.advanceTimersByTime(1);
+    throttledFunc();
+    expect(mockFn).toHaveBeenCalledTimes(2);
+  });
+
+  it("check default delay", () => {
+    const mockFn = jest.fn();
+    const throttledFunc = throttle(mockFn);
+
+    throttledFunc();
+    expect(mockFn).toHaveBeenCalledTimes(1);
+
+    throttledFunc();
+    jest.advanceTimersByTime(999);
+    expect(mockFn).toHaveBeenCalledTimes(1);
+
+    jest.advanceTimersByTime(1);
+    throttledFunc();
+    expect(mockFn).toHaveBeenCalledTimes(2);
+  });
+});