add custom base test fixture

e2e/playwright/lib/base-fixture.ts

@@ -0,0 +1,48 @@
+import * as fs from 'fs'
+import * as path from 'path'
+import * as crypto from 'crypto'
+import { test as baseTest } from '@playwright/test'
+
+const istanbulCLIOutput = path.join(process.cwd(), '.nyc_output')
+
+export function generateUUID(): string {
+  return crypto.randomBytes(16).toString('hex')
+}
+
+export const test = baseTest.extend({
+  context: async ({ context }, use) => {
+    await context.addInitScript(() =>
+      window.addEventListener('beforeunload', () =>
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        (window as any).collectIstanbulCoverage(
+          JSON.stringify((window as any).__coverage__)
+        )
+      )
+    )
+    await fs.promises.mkdir(istanbulCLIOutput, { recursive: true })
+    await context.exposeFunction(
+      'collectIstanbulCoverage',
+      (coverageJSON: string) => {
+        if (coverageJSON)
+          fs.writeFileSync(
+            path.join(
+              istanbulCLIOutput,
+              `playwright_coverage_${generateUUID()}.json`
+            ),
+            coverageJSON
+          )
+      }
+    )
+    await use(context)
+    for (const page of context.pages()) {
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      await page.evaluate(() =>
+        (window as any).collectIstanbulCoverage(
+          JSON.stringify((window as any).__coverage__)
+        )
+      )
+    }
+  },
+})
+
+export const expect = test.expect

e2e/playwright/testing-settings.spec.ts

@@ -1,9 +1,9 @@
-import { test, expect } from '@playwright/test'
+import { expect } from '@playwright/test'
-
 import { getUtils, setup, tearDown } from './test-utils'
 import { SaveSettingsPayload } from 'lib/settings/settingsTypes'
 import { TEST_SETTINGS_KEY, TEST_SETTINGS_CORRUPTED } from './storageStates'
 import * as TOML from '@iarna/toml'
+import { test } from './lib/base-fixture'
 
 test.beforeEach(async ({ context, page }) => {
   await setup(context, page)