test(libs/constants): add test cases + new test:lib script

.github/workflows/testing.yml

@@ -69,6 +69,9 @@ jobs:
       - name: Unit testing client
         run: yarn test:client
 
+      - name: Unit testing libs
+        run: yarn test:libs
+
       - name: Build and start server
         id: server
         env:

libs/constants/index.test.ts

@@ -0,0 +1,62 @@
+import {
+  createRegExpFromExtensions,
+  ANY_ATTACHMENT_REGEXP,
+  BINARY_ATTACHMENT_REGEXP,
+} from "./index.js";
+
+describe("createRegExpFromExt", () => {
+  const regexp = createRegExpFromExtensions("foo");
+
+  it("accepts the extension", () => {
+    expect(regexp.test("test.foo")).toEqual(true);
+  });
+
+  it("accepts uppercase", () => {
+    expect(regexp.test("test.FOO")).toEqual(true);
+  });
+
+  it("rejects intermediate extensions", () => {
+    expect(regexp.test("test.foo.bar")).toEqual(false);
+  });
+
+  it("rejects other extensions", () => {
+    expect(regexp.test("test.bar")).toEqual(false);
+  });
+
+  it("rejects extensions starting with it", () => {
+    expect(regexp.test("test.foob")).toEqual(false);
+  });
+
+  it("rejects extensions ending with it", () => {
+    expect(regexp.test("test.afoo")).toEqual(false);
+  });
+});
+
+describe("ANY_ATTACHMENT_REGEXP", () => {
+  const regexp = ANY_ATTACHMENT_REGEXP;
+  it("accepts audio files", () => {
+    expect(regexp.test("audio.mp3")).toEqual(true);
+  });
+
+  it("accepts video files", () => {
+    expect(regexp.test("video.mp4")).toEqual(true);
+  });
+
+  it("accepts font files", () => {
+    expect(regexp.test("diagram.svg")).toEqual(true);
+  });
+
+  ["index.html", "index.json", "index.md", "contributors.txt"].forEach(
+    (filename) =>
+      it(`rejects ${filename}`, () => {
+        expect(regexp.test(filename)).toEqual(false);
+      })
+  );
+});
+
+describe("BINARY_ATTACHMENT_REGEXP", () => {
+  const regexp = BINARY_ATTACHMENT_REGEXP;
+  it("rejects svg files", () => {
+    expect(regexp.test("diagram.svg")).toEqual(false);
+  });
+});

package.json

@@ -42,12 +42,13 @@
     "start:static-server": "ts-node server/static.ts",
     "style-dictionary": "style-dictionary build -c sd-config.js",
     "stylelint": "stylelint \"**/*.scss\"",
-    "test": "yarn prettier-check && yarn test:client && yarn test:kumascript && yarn test:content && yarn test:testing",
+    "test": "yarn prettier-check && yarn test:client && yarn test:kumascript && yarn test:libs && yarn test:content && yarn test:testing",
     "test:client": "cd client && tsc --noEmit && cross-env NODE_ENV=test BABEL_ENV=test PUBLIC_URL='' node scripts/test.js --env=jsdom",
     "test:content": "yarn jest --rootDir content",
     "test:developing": "cross-env CONTENT_ROOT=mdn/content/files TESTING_DEVELOPING=true playwright test developing",
     "test:headless": "playwright test headless",
     "test:kumascript": "yarn jest --rootDir kumascript --env=node",
+    "test:libs": "yarn jest --rootDir libs --env=node",
     "test:prepare": "yarn build:prepare && yarn build && yarn start:static-server",
     "test:testing": "yarn jest --rootDir testing",
     "tool": "ts-node tool/cli.ts",