test: add multi-compiler configuration and watch options tests

Author: bjohansebas

test/serve/rebuild/multi.config.js

@@ -0,0 +1,21 @@
+module.exports = [
+  {
+    name: "app",
+    mode: "development",
+    entry: "./src/index.js",
+    output: { filename: "app.js" },
+    watchOptions: {
+      aggregateTimeout: 10,
+    },
+    devServer: {},
+  },
+  {
+    name: "worker",
+    mode: "development",
+    entry: "./src/index.js",
+    output: { filename: "worker.js" },
+    watchOptions: {
+      aggregateTimeout: 10,
+    },
+  },
+];

test/serve/rebuild/serve-rebuild.test.js

@@ -83,4 +83,19 @@ describe("serve recompilation", () => {
 
     expect(updatedBody).toContain("serve rebuild test updated");
   });
+
+  it("should watch every compiler of a multi compiler with its own watch options", async () => {
+    const { stderr, stdout } = await runWatch(
+      __dirname,
+      ["serve", "--config", "multi.config.js", "--port", port],
+      {
+        stdoutKillStr: /compiled successfully/,
+        stderrKillStr: /Project is running at:/,
+      },
+    );
+
+    expect(stdout).toContain("app:");
+    expect(stdout).toContain("worker:");
+    expect(stderr).toContain("Project is running at:");
+  });
 });

test/serve/rebuild/webpack.config.js

@@ -0,0 +1,7 @@
+module.exports = {
+  mode: "development",
+  entry: "./src/index.js",
+  watchOptions: {
+    aggregateTimeout: 10,
+  },
+};