Add utilities to check platform to determine if a test should run (#5983)

* Add tests for utility to bypass unreliable tests

* Limit skip to just Windows

* Ignore unit tests from Playwright

* A snapshot a day keeps the bugs away! 📷🐛

* A snapshot a day keeps the bugs away! 📷🐛

* A snapshot a day keeps the bugs away! 📷🐛

* A snapshot a day keeps the bugs away! 📷🐛

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

e2e/playwright/test-utils.test.ts

@@ -0,0 +1,96 @@
+import {
+  runningOnLinux,
+  runningOnMac,
+  runningOnWindows,
+  orRunWhenFullSuiteEnabled,
+} from './test-utils'
+
+describe('platform detection utilities', () => {
+  const originalPlatform = process.platform
+
+  afterAll(() => {
+    Object.defineProperty(process, 'platform', {
+      value: originalPlatform,
+    })
+  })
+
+  describe('runningOnLinux', () => {
+    it('returns true on Linux', () => {
+      Object.defineProperty(process, 'platform', {
+        value: 'linux',
+      })
+      expect(runningOnLinux()).toBe(true)
+    })
+
+    it('returns false on other platforms', () => {
+      Object.defineProperty(process, 'platform', {
+        value: 'darwin',
+      })
+      expect(runningOnLinux()).toBe(false)
+    })
+  })
+
+  describe('runningOnMac', () => {
+    it('returns true on Mac', () => {
+      Object.defineProperty(process, 'platform', {
+        value: 'darwin',
+      })
+      expect(runningOnMac()).toBe(true)
+    })
+
+    it('returns false on other platforms', () => {
+      Object.defineProperty(process, 'platform', {
+        value: 'linux',
+      })
+      expect(runningOnMac()).toBe(false)
+    })
+  })
+
+  describe('runningOnWindows', () => {
+    it('returns true on Windows', () => {
+      Object.defineProperty(process, 'platform', {
+        value: 'win32',
+      })
+      expect(runningOnWindows()).toBe(true)
+    })
+
+    it('returns false on other platforms', () => {
+      Object.defineProperty(process, 'platform', {
+        value: 'linux',
+      })
+      expect(runningOnWindows()).toBe(false)
+    })
+  })
+})
+
+describe('utility to bypass unreliable tests', () => {
+  const originalEnv = { ...process.env }
+
+  afterAll(() => {
+    process.env = { ...originalEnv }
+  })
+  it('always runs them on dedicated branch', () => {
+    process.env.GITHUB_EVENT_NAME = 'push'
+    process.env.GITHUB_REF = 'refs/heads/all-e2e'
+    process.env.GITHUB_HEAD_REF = ''
+    process.env.GITHUB_BASE_REF = ''
+    const condition = orRunWhenFullSuiteEnabled()
+    expect(condition).toBe(false)
+  })
+  it('skips them on the main branch', () => {
+    process.env.GITHUB_EVENT_NAME = 'push'
+    process.env.GITHUB_REF = 'refs/heads/main'
+    process.env.GITHUB_HEAD_REF = ''
+    process.env.GITHUB_BASE_REF = ''
+    const condition = orRunWhenFullSuiteEnabled()
+    expect(condition).toBe(true)
+  })
+  it('skips them on pull requests', () => {
+    process.env.GITHUB_EVENT_NAME = 'pull_request'
+    process.env.GITHUB_REF = 'refs/pull/5883/merge'
+    process.env.GITHUB_HEAD_REF = 'my-branch'
+    process.env.GITHUB_BASE_REF = 'main'
+    const condition = orRunWhenFullSuiteEnabled()
+    expect(condition).toBe(true)
+  })
+})