feat: mock property type support symbol and number (#3)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Enhanced mocking functionality to support a broader range of key
types, including symbols and numbers.
- Added new test cases for mocking Symbol properties and number
properties.

- **Bug Fixes**
- Updated tests to ensure original properties are correctly restored
after mocking.

- **Documentation**
- Updated test suite documentation to reflect changes in key handling
and new test cases.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

src/index.ts

@@ -1,7 +1,7 @@
 // Keep track of mocks
 export interface MockItem {
   obj: any;
-  key: string;
+  key: PropertyKey;
   descriptor: PropertyDescriptor;
   hasOwnProperty: boolean;
 }
@@ -13,7 +13,7 @@ const cache = new Map<any, Set<any>>();
 /**
  * Mocks a value of an object.
  */
-export function mock(obj: any, key: string, value?: any) {
+export function mock(obj: any, key: PropertyKey, value?: any) {
   const hasOwnProperty = Object.hasOwn(obj, key);
   mocks.push({
     obj,
@@ -75,7 +75,7 @@ export function restore() {
   cache.clear();
 }
 
-export function isMocked(obj: any, key: string) {
+export function isMocked(obj: any, key: PropertyKey) {
   const flag = cache.get(obj);
   return flag ? flag.has(key) : false;
 }

test/method.test.ts

@@ -72,9 +72,12 @@ describe('Mock methods', () => {
 });
 
 describe('Mock property', () => {
+  const fooSymbol = Symbol('foo');
   const config = {
     enableCache: true,
     delay: 10,
+    [fooSymbol]: 'bar',
+    1: 'one',
   };
 
   const plainObj = Object.create(null);
@@ -89,6 +92,24 @@ describe('Mock property', () => {
     assert.equal(plainObj.testKey, 'mockValue', 'testKey is mockValue');
   });
 
+  it('Should mock Symbol property successfully', () => {
+    muk(config, fooSymbol, 'mockValue');
+    assert.equal(config[fooSymbol], 'mockValue', 'fooSymbol is mockValue');
+    assert.equal(isMocked(config, fooSymbol), true, 'fooSymbol is mocked');
+    restore();
+    assert.equal(config[fooSymbol], 'bar', 'fooSymbol is bar');
+    assert.equal(isMocked(config, fooSymbol), false, 'fooSymbol is not mocked');
+  });
+
+  it('Should mock number property successfully', () => {
+    muk(config, 1, 'mockValue');
+    assert.equal(config[1], 'mockValue', '1 is mockValue');
+    assert.equal(isMocked(config, 1), true, '1 is mocked');
+    restore();
+    assert.equal(config[1], 'one', '1 is one');
+    assert.equal(isMocked(config, 1), false, '1 is not mocked');
+  });
+
   it('Should alias mock method work', () => {
     mock(plainObj, 'testKey', 'mockValue');
     assert.equal(plainObj.testKey, 'mockValue', 'testKey is mockValue');
@@ -116,10 +137,10 @@ describe('Mock property', () => {
     muk(process.env, 'HOME', '/mockhome');
     muk(config, 'notExistProp', 'value');
     muk(process.env, 'notExistProp', 0);
-    assert.deepEqual(Object.keys(config), [ 'enableCache', 'delay', 'notExistProp' ]);
+    assert.deepEqual(Object.keys(config), [ '1', 'enableCache', 'delay', 'notExistProp' ]);
 
     restore();
-    assert.deepEqual(Object.keys(config), [ 'enableCache', 'delay' ]);
+    assert.deepEqual(Object.keys(config), [ '1', 'enableCache', 'delay' ]);
     assert.equal(config.enableCache, true, 'enableCache is true');
     assert.equal(config.delay, 10, 'delay is 10');
     assert.equal(process.env.HOME, home, 'process.env.HOME is ' + home);