From 9e471cd75628b023f2a23b7a9bfd0447bd861a73 Mon Sep 17 00:00:00 2001
From: Gustavo Lira <guga.java@gmail.com>
Date: Mon, 4 May 2026 16:47:56 -0300
Subject: [PATCH 1/2] feat: add auto-fixture for Istanbul coverage collection
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Add a `_coverageCollector` auto-fixture that collects
`window.__coverage__` from the browser after each test and writes
it to a JSON file. This enables E2E coverage collection for
instrumented dynamic plugins without modifying any test files.

Guarded by E2E_COLLECT_COVERAGE=1 — zero overhead when disabled.
Coverage files are written to coverage/istanbul/ (or
COVERAGE_OUTPUT_DIR) and consumed by the overlay repo's coverage
reporter for merging into lcov and uploading to Codecov.

Part of the E2E coverage pipeline: RHIDP-13411

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 src/playwright/fixtures/test.ts | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/src/playwright/fixtures/test.ts b/src/playwright/fixtures/test.ts
index 4456227..9bbf362 100644
--- a/src/playwright/fixtures/test.ts
+++ b/src/playwright/fixtures/test.ts
@@ -4,6 +4,7 @@ import { LoginHelper, UIhelper } from "../helpers/index.js";
 import { runOnce } from "../run-once.js";
 import { $ } from "../../utils/bash.js";
 import { WorkspacePaths } from "../../utils/workspace-paths.js";
+import fs from "node:fs";
 import path from "path";
 
 type RHDHDeploymentTestFixtures = {
@@ -11,6 +12,8 @@ type RHDHDeploymentTestFixtures = {
   uiHelper: UIhelper;
   loginHelper: LoginHelper;
   autoAnnotations: void;
+  // eslint-disable-next-line @typescript-eslint/naming-convention
+  _coverageCollector: void;
 };
 
 type RHDHDeploymentWorkerFixtures = {
@@ -77,6 +80,34 @@ const baseTest = base.extend<
     },
     { auto: true, scope: "test" },
   ],
+  // eslint-disable-next-line @typescript-eslint/naming-convention
+  _coverageCollector: [
+    async ({ page }, use, testInfo) => {
+      await use();
+      if (process.env.E2E_COLLECT_COVERAGE !== "1") return;
+      try {
+        const coverage = await page.evaluate(
+          () =>
+            (
+              globalThis as unknown as {
+                // eslint-disable-next-line @typescript-eslint/naming-convention
+                __coverage__?: Record<string, unknown>;
+              }
+            ).__coverage__,
+        );
+        if (!coverage) return;
+        const dir = path.join(testInfo.project.outputDir, "coverage");
+        fs.mkdirSync(dir, { recursive: true });
+        fs.writeFileSync(
+          path.join(dir, `${testInfo.testId}-${Date.now()}.json`),
+          JSON.stringify(coverage),
+        );
+      } catch {
+        // Best-effort: page may have crashed or been closed
+      }
+    },
+    { auto: true, scope: "test" },
+  ],
 });
 
 export const test = Object.assign(baseTest, {

From 3f9569d7f7ef8afaaf02aa5c0d4c15f8ff4249cd Mon Sep 17 00:00:00 2001
From: Gustavo Lira <guga.java@gmail.com>
Date: Thu, 7 May 2026 10:26:46 -0300
Subject: [PATCH 2/2] chore: bump version to 1.1.39 and add changelog entry

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 docs/changelog.md | 8 +++++++-
 package.json      | 2 +-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/docs/changelog.md b/docs/changelog.md
index 451ee01..742af29 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -2,7 +2,13 @@
 
 All notable changes to this project will be documented in this file.
 
-## [1.1.38] - Current
+## [1.1.39] - Current
+
+### Added
+
+- **E2E coverage collection auto-fixture**: New `_coverageCollector` automatic fixture collects Istanbul coverage (`window.__coverage__`) from the browser after each test and writes per-test JSON files to `<outputDir>/coverage/`. Enabled via `E2E_COLLECT_COVERAGE=1`. Zero overhead when disabled — no `page.evaluate` call or fs operations. Designed for use with instrumented dynamic plugin builds (nyc instrument).
+
+## [1.1.38]
 
 ### Added
 
diff --git a/package.json b/package.json
index f5d563b..0fccf5f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@red-hat-developer-hub/e2e-test-utils",
-  "version": "1.1.38",
+  "version": "1.1.39",
   "description": "Test utilities for RHDH E2E tests",
   "license": "Apache-2.0",
   "repository": {