unit test that demonstrates converting links inside mermaid code block

Author: hatton

src/plugins/mermaidLinkPlugin.spec.ts

@@ -0,0 +1,69 @@
+import { NotionPage } from "../NotionPage";
+import { makeSamplePageObject, oneBlockToMarkdown } from "./pluginTestRun";
+import { IDocuNotionContext, IPlugin } from "./pluginTypes";
+
+test("raw url inside a mermaid codeblock gets converted to path using slug of that page", async () => {
+  const targetPageId = "123";
+  const targetPage: NotionPage = makeSamplePageObject({
+    slug: "slug-of-target",
+    name: "My Target Page",
+    id: targetPageId,
+  });
+
+  const input = {
+    type: "code",
+    code: {
+      caption: [],
+      rich_text: [
+        {
+          type: "text",
+          text: {
+            content: `click A "https://www.notion.so/native/metapages/A-Page-${targetPageId}"`,
+            link: null,
+          },
+          annotations: {
+            bold: false,
+            italic: false,
+            strikethrough: false,
+            underline: false,
+            code: false,
+            color: "default",
+          },
+          plain_text: `click A "https://www.notion.so/native/metapages/A-Page-${targetPageId}"`,
+          href: null,
+        },
+      ],
+      language: "mermaid", // notion assumed javascript in my test in which I didn't specify a language
+    },
+  };
+
+  const mermaidLinks: IPlugin = {
+    name: "mermaidLinks",
+    regexMarkdownModifications: [
+      {
+        regex: /```mermaid\n.*"(https:\/\/www\.notion\.so\S+)"/,
+        includeCodeBlocks: true,
+        getReplacement: async (
+          context: IDocuNotionContext,
+          match: RegExpExecArray
+        ) => {
+          const url = match[1];
+          const docusaurusUrl =
+            context.convertNotionLinkToLocalDocusaurusLink(url);
+          // eslint-disable-next-line @typescript-eslint/await-thenable
+          return await match[0].replace(url, docusaurusUrl);
+        },
+      },
+    ],
+  };
+
+  const config = {
+    plugins: [
+      // standardInternalLinkConversion,
+      // standardExternalLinkConversion,
+      mermaidLinks,
+    ],
+  };
+  const results = await oneBlockToMarkdown(config, input, targetPage);
+  expect(results.trim()).toContain(`click A "/slug-of-target"`);
+});