build: inline external Github Actions to unblock CI (#12241)

* build: inline cached-dependencies to unblock CI

* Run E2E on pull_request on;y

* Inline all external actions

* Checkout needed for internal actions

Also fixes pre-commit

* Add missing files

.github/actions/file-changes-action/src/tests/UtilsHelper.test.ts

@@ -0,0 +1,67 @@
+import {Env, p, getTestEvents} from './mocks/env'
+
+let env: Env
+describe('Testing UtilsHelper.ts...', () => {
+  describe('...with push event...', () => {
+    beforeAll(() => {
+      env = new Env({}, {githubToken: 'TestToken'}, 'push')
+    })
+    afterEach(() => {
+      process.env = {...env.envStart}
+      jest.resetModules()
+      env = new Env({}, {}, 'push')
+    })
+    /**
+     * @function getErrorString
+     */
+    describe('...with function getErrorString...', () => {
+      it('...can throw an error', () => {
+        const error = require('../UtilsHelper').getErrorString()
+        expect(JSON.stringify(JSON.parse(error))).toBe(
+          JSON.stringify({error: '500/undefined', payload: ''})
+        )
+      })
+
+      it('...can throw an error for my error', () => {
+        const {setFailed, error: coreError} = require('@actions/core')
+        const obj = {a: {}}
+        obj.a = {b: obj}
+        expect(() =>
+          require('../UtilsHelper').getErrorString(
+            'test',
+            200,
+            'test',
+            'test',
+            obj
+          )
+        ).toThrowError(
+          JSON.stringify({
+            name: '500/undefined',
+            message: 'Error throwing error.'
+          })
+        )
+        // expect(JSON.stringify(JSON.parse(error))).toBe(JSON.stringify({error:'500/undefined', payload:''}))
+        expect(setFailed).toBeCalledWith(
+          expect.stringContaining('Error throwing error.')
+        )
+        expect(coreError).toBeCalledWith(
+          expect.stringContaining('Error throwing error.')
+        )
+      })
+    })
+    /**
+     * @function errorMessage
+     */
+    describe('...with function errorMessage...', () => {
+      it.each(getTestEvents(p.errorMessageInputs, 'push'))(
+        '...for function %s',
+        (f, e, expected) => {
+          const error = require('../UtilsHelper').errorMessage(f, e)
+          expect(error).toBe(
+            `${expected}\nException: ${JSON.stringify(e, null, 2)}`
+          )
+        }
+      )
+    })
+  })
+})