test: add unit test

src/loaders/markdown/transformer/fixtures/code-group/expect.ts

@@ -0,0 +1,7 @@
+import { IMdTransformerResult } from '../..';
+
+export default (ret: IMdTransformerResult) => {
+  expect(ret.content).toEqual(
+    '<><div className="markdown"><h3 id="codegroup"><a aria-hidden="true" tabIndex="-1" href="#codegroup"><span className="icon icon-link" /></a>{"CodeGroup"}</h3></div><CodeGroup><SourceCode title="npm" lang="bash">{$$contentTexts[0].value}</SourceCode><SourceCode title="yarn" lang="bash">{$$contentTexts[1].value}</SourceCode><SourceCode title="pnpm" lang="bash">{$$contentTexts[2].value}</SourceCode><SourceCode title=".dumirc.ts" lang="ts">{$$contentTexts[3].value}</SourceCode></CodeGroup></>',
+  );
+};

src/loaders/markdown/transformer/fixtures/code-group/index.md

@@ -0,0 +1,25 @@
+### CodeGroup
+
+:::code-group
+
+```bash [npm]
+npm install -D dumi
+```
+
+```bash [yarn]
+yarn add -D dumi
+```
+
+```bash [pnpm]
+pnpm add -D dumi
+```
+
+```ts [.dumirc.ts]
+import { defineConfig } from 'dumi';
+
+export default defineConfig({
+  // ...
+});
+```
+
+:::