add test

packages/app/jest.config.js

@@ -20,6 +20,11 @@ module.exports = {
 
       preset: 'ts-jest/presets/js-with-ts',
 
+      // transform ESM to CJS
+      transformIgnorePatterns: [
+        '/node_modules/(?!remark-gfm)/',
+      ],
+
       rootDir: '.',
       roots: ['<rootDir>'],
       testMatch: ['<rootDir>/test/unit/**/*.test.ts', '<rootDir>/test/unit/**/*.test.js'],
@@ -29,6 +34,7 @@ module.exports = {
       // Automatically clear mock calls and instances between every test
       clearMocks: true,
       moduleNameMapper: MODULE_NAME_MAPPING,
+
     },
     {
       displayName: 'server',

packages/app/test/unit/services/renderer/pukiwiki-like-linker.test.ts

@@ -0,0 +1,39 @@
+import parse from 'remark-parse';
+import { unified } from 'unified';
+import { visit } from 'unist-util-visit';
+
+import { relativeLinksByPukiwikiLikeLinker } from '../../../../src/services/renderer/rehype-plugins/relative-links-by-pukiwiki-like-linker';
+import { pukiwikiLikeLinker } from '../../../../src/services/renderer/remark-plugins/pukiwiki-like-linker';
+
+describe('pukiwikiLikeLinker', () => {
+
+  /* eslint-disable indent */
+  describe.each`
+    input                 | expectedHref          | expectedValue
+    ${'[[/page]]'}        | ${'/page'}            | ${'/page'}
+    ${'[[./page]]'}       | ${'./page'}           | ${'./page'}
+    ${'[[Title>./page'}   | ${'./page'}           | ${'Title'}
+  `('should parse correctly', ({ input, expectedHref, expectedValue }) => {
+
+    test(`when the input is '${input}'`, () => {
+      // setup:
+      const processor = unified()
+        .use(parse)
+        .use(pukiwikiLikeLinker);
+
+      // when:
+      const ast = processor.parse(input);
+
+      expect(ast).not.toBeNull();
+
+      visit(ast, 'wikiLink', (node: any) => {
+        expect(node.data.hName).toEqual('a');
+        expect(node.data.hProperties.className.startsWith('pukiwiki-like-linker')).toBeTruthy();
+        expect(node.data.hProperties.href).toEqual(expectedHref);
+        expect(node.data.hChildren[0].value).toEqual(expectedValue);
+      });
+
+    });
+  });
+
+});