mock core.<method> loggers for actions

Author: robherley

__tests__/helpers.ts

@@ -1,4 +1,5 @@
 import * as fs from 'fs/promises'
+import * as core from '@actions/core'
 import path from 'path'
 
 export const testFixturesDirectory = path.join(__dirname, 'fixtures')
@@ -19,7 +20,7 @@ module github.com/robherley/go-test-example
 go 1.18
 `
 
-export const setupActionsInputs = async () => {
+export const setupActionsInputs = () => {
   process.env['INPUT_MODULEDIRECTORY'] = testModuleDirectory
   process.env['INPUT_TESTARGUMENTS'] = testArguments
 }
@@ -46,3 +47,20 @@ export const getTestStdout = async (): Promise<string> => {
   )
   return buf.toString()
 }
+
+export const mockActionsCoreLogging = () => {
+  type LogFuncs = 'debug' | 'error' | 'warning' | 'notice' | 'info'
+  const logMethods: LogFuncs[] = ['debug', 'error', 'warning', 'notice', 'info']
+  logMethods.forEach(method => {
+    jest
+      .spyOn(core, method)
+      .mockImplementation(
+        (msg: string | Error, props?: core.AnnotationProperties) => {
+          console.log(
+            `[mock: core.${method}(${props ? JSON.stringify(props) : ''})]:`,
+            msg
+          )
+        }
+      )
+  })
+}

__tests__/renderer.test.ts

@@ -1,7 +1,11 @@
-import { getTestStdout } from './helpers'
+import { getTestStdout, mockActionsCoreLogging } from './helpers'
 import Renderer from '../src/renderer'
 
 describe('Renderer', () => {
+  beforeEach(async () => {
+    mockActionsCoreLogging()
+  })
+
   it('correctly parses test2json output', async () => {
     const stdout = await getTestStdout()
 

__tests__/tester.test.ts

@@ -8,6 +8,7 @@ import {
   testModuleDirectory,
   mockProcessExit,
   createFakeGoModule,
+  mockActionsCoreLogging,
 } from './helpers'
 import Tester from '../src/tester'
 import Renderer from '../src/renderer'
@@ -18,7 +19,8 @@ describe('Tester', () => {
   })
 
   beforeEach(async () => {
-    await setupActionsInputs()
+    mockActionsCoreLogging()
+    setupActionsInputs()
   })
 
   it("sets defaults if inputs aren't set", async () => {

jest.config.ts

@@ -5,6 +5,7 @@ const config: Config.InitialOptions = {
   testEnvironment: 'node',
   testPathIgnorePatterns: ['helpers.ts'],
   reporters: ['default', 'github-actions'],
+  clearMocks: true,
 }
 
 export default config