feat(packages/vue): add useCounter composable

packages/vue/src/composables/useCounter/index.test.ts

@@ -0,0 +1,76 @@
+import { it, expect, describe } from 'vitest';
+import { useCounter } from '.';
+import { ref } from 'vue';
+
+describe('useCounter', () => {
+  it('initialize count with the provided initial value', () => {
+    const { count } = useCounter(5);
+    expect(count.value).toBe(5);
+  });
+
+  it('initialize count with the provided initial value from a ref', () => {
+    const { count } = useCounter(ref(5));
+    expect(count.value).toBe(5);
+  });
+
+  it('increment count by 1 by default', () => {
+    const { count, increment } = useCounter(0);
+    increment();
+    expect(count.value).toBe(1);
+  });
+
+  it('increment count by the specified delta', () => {
+    const { count, increment } = useCounter(0);
+    increment(5);
+    expect(count.value).toBe(5);
+  });
+
+  it('decrement count by 1 by default', () => {
+    const { count, decrement } = useCounter(5);
+    decrement();
+    expect(count.value).toBe(4);
+  });
+
+  it('decrement count by the specified delta', () => {
+    const { count, decrement } = useCounter(10);
+    decrement(5);
+    expect(count.value).toBe(5);
+  });
+
+  it('set count to the specified value', () => {
+    const { count, set } = useCounter(0);
+    set(10);
+    expect(count.value).toBe(10);
+  });
+
+  it('get the current count value', () => {
+    const { get } = useCounter(5);
+    expect(get()).toBe(5);
+  });
+
+  it('reset count to the initial value', () => {
+    const { count, reset } = useCounter(10);
+    count.value = 5;
+    reset();
+    expect(count.value).toBe(10);
+  });
+
+  it('reset count to the specified value', () => {
+    const { count, reset } = useCounter(10);
+    count.value = 5;
+    reset(20);
+    expect(count.value).toBe(20);
+  });
+
+  it('clamp count to the minimum value', () => {
+      const { count, decrement } = useCounter(Number.MIN_SAFE_INTEGER);
+      decrement();
+      expect(count.value).toBe(Number.MIN_SAFE_INTEGER);
+  });
+
+  it('clamp count to the maximum value', () => {
+      const { count, increment } = useCounter(Number.MAX_SAFE_INTEGER);
+      increment();
+      expect(count.value).toBe(Number.MAX_SAFE_INTEGER);
+  });
+});