test: add genStyleUtils test

jest.config.js

@@ -1,3 +1,4 @@
 module.exports = {
-  setupFiles: ['./tests/setup.js'],
+  testEnvironment: 'jsdom',
+  setupFiles: ['./tests/setup.ts'],
 };

src/util/genStyleUtils.tsx

@@ -390,7 +390,7 @@ export default function genStyleUtils<
           const defaultComponentToken = getDefaultComponentToken<
             CompTokenMap,
             C
-          >(component, realToken, getDefaultToken);
+          >(component, realToken, getDefaultToken) ?? {};
 
           const componentCls = `.${prefixCls}`;
           const componentToken = getComponentToken<CompTokenMap, C>(

tests/genStyleUtils.test.tsx

@@ -0,0 +1,85 @@
+import React from 'react';
+import { render, renderHook } from '@testing-library/react';
+
+import { genStyleUtils } from '../src'
+import type { CSSVarRegisterProps, SubStyleComponentProps } from '../src/util/genStyleUtils';
+
+describe('genStyleUtils', () => {
+  const mockConfig = {
+    usePrefix: jest.fn().mockReturnValue({
+      rootPrefixCls: 'ant',
+      iconPrefixCls: 'anticon',
+    }),
+    useToken: jest.fn().mockReturnValue({
+      theme: {},
+      realToken: {},
+      hashId: 'hash',
+      token: {},
+      cssVar: {},
+    }),
+    useCSP: jest.fn().mockReturnValue({ nonce: 'nonce' }),
+    getResetStyles: jest.fn().mockReturnValue([]),
+  };
+
+  const { genStyleHooks, genSubStyleComponent, genComponentStyleHook } = genStyleUtils(mockConfig);
+
+  describe('genStyleHooks', () => {
+    it('should generate style hooks', () => {
+      const component = 'TestComponent';
+      const styleFn = jest.fn();
+      const getDefaultToken = jest.fn();
+      const hooks = genStyleHooks(component, styleFn, getDefaultToken);
+
+      expect(hooks).toBeInstanceOf(Function);
+
+      const {
+        result: { current }
+      } = renderHook(() => hooks('test-prefix'));
+      expect(current).toBeInstanceOf(Array);
+      expect(current).toHaveLength(3);
+    });
+  });
+
+  describe('genSubStyleComponent', () => {
+    it('should generate sub style component', () => {
+      const component = 'TestComponent';
+      const styleFn = jest.fn();
+      const getDefaultToken = jest.fn();
+      const StyledComponent = genSubStyleComponent(component, styleFn, getDefaultToken);
+
+      const { container } = render(<StyledComponent prefixCls="test-prefix" rootCls="test-root" />);
+      expect(container).toBeEmptyDOMElement();
+    });
+  });
+
+  describe('genComponentStyleHook', () => {
+    it('should generate component style hook', () => {
+      const component = 'TestComponent';
+      const styleFn = jest.fn();
+      const getDefaultToken = jest.fn();
+      const hook = genComponentStyleHook(component, styleFn, getDefaultToken);
+
+      const TestComponent: React.FC<SubStyleComponentProps> = ({ prefixCls, rootCls }) => {
+        hook(prefixCls, rootCls);
+        return <div data-testid="test-component">Test</div>;
+      };
+
+      const { getByTestId } = render(<TestComponent prefixCls="test-prefix" rootCls="test-root" />);
+      expect(getByTestId('test-component')).toHaveTextContent('Test');
+    });
+  });
+
+  describe('CSSVarRegister', () => {
+    it('should render CSSVarRegister component', () => {
+      const CSSVarRegister: React.FC<CSSVarRegisterProps> = ({
+        rootCls,
+        cssVar = {},
+      }) => {
+        return <div data-testid={rootCls}>{cssVar.prefix}</div>;
+      };
+
+      const { getByTestId } = render(<CSSVarRegister rootCls="test-root" cssVar={{ prefix: 'test-prefix' }} component="test" />);
+      expect(getByTestId('test-root')).toHaveTextContent('test-prefix');
+    });
+  });
+});

tests/setupAfterEnv.ts

@@ -0,0 +1 @@
+import '@testing-library/jest-dom';