adds basic tests

__tests__/main.test.ts

@@ -1,89 +1,56 @@
-// /**
-//  * Unit tests for the action's main functionality, src/main.ts
-//  *
-//  * These should be run as if the action was called from a workflow.
-//  * Specifically, the inputs listed in `action.yml` should be set as environment
-//  * variables following the pattern `INPUT_<INPUT_NAME>`.
-//  */
-
-// import * as core from '@actions/core'
-// import * as main from '../src/main'
+/**
+ * Unit tests for the action's main functionality, src/main.ts
+ *
+ * These should be run as if the action was called from a workflow.
+ * Specifically, the inputs listed in `action.yml` should be set as environment
+ * variables following the pattern `INPUT_<INPUT_NAME>`.
+ */
+
+import * as core from '@actions/core'
+import * as tc from '@actions/tool-cache'
+import * as main from '../src/main'
 
 // // Mock the action's main function
-// const runMock = jest.spyOn(main, 'run')
+const runMock = jest.spyOn(main, 'run')
 
 // // Other utilities
 // const timeRegex = /^\d{2}:\d{2}:\d{2}/
 
 // // Mock the GitHub Actions core library
 // let debugMock: jest.SpyInstance
-// let errorMock: jest.SpyInstance
-// let getInputMock: jest.SpyInstance
-// let setFailedMock: jest.SpyInstance
-// let setOutputMock: jest.SpyInstance
-
-// describe('action', () => {
-//   beforeEach(() => {
-//     jest.clearAllMocks()
-
-//     debugMock = jest.spyOn(core, 'debug').mockImplementation()
-//     errorMock = jest.spyOn(core, 'error').mockImplementation()
-//     getInputMock = jest.spyOn(core, 'getInput').mockImplementation()
-//     setFailedMock = jest.spyOn(core, 'setFailed').mockImplementation()
-//     setOutputMock = jest.spyOn(core, 'setOutput').mockImplementation()
-//   })
-
-//   // it('sets the time output', async () => {
-//   //   // Set the action's inputs as return values from core.getInput()
-//   //   getInputMock.mockImplementation((name: string): string => {
-//   //     switch (name) {
-//   //       case 'milliseconds':
-//   //         return '500'
-//   //       default:
-//   //         return ''
-//   //     }
-//   //   })
-
-//   //   await main.run()
-//   //   expect(runMock).toHaveReturned()
-
-//   //   // Verify that all of the core library functions were called correctly
-//   //   expect(debugMock).toHaveBeenNthCalledWith(1, 'Waiting 500 milliseconds ...')
-//   //   expect(debugMock).toHaveBeenNthCalledWith(
-//   //     2,
-//   //     expect.stringMatching(timeRegex)
-//   //   )
-//   //   expect(debugMock).toHaveBeenNthCalledWith(
-//   //     3,
-//   //     expect.stringMatching(timeRegex)
-//   //   )
-//   //   expect(setOutputMock).toHaveBeenNthCalledWith(
-//   //     1,
-//   //     'time',
-//   //     expect.stringMatching(timeRegex)
-//   //   )
-//   //   expect(errorMock).not.toHaveBeenCalled()
-//   // })
-
-//   // it('sets a failed status', async () => {
-//   //   // Set the action's inputs as return values from core.getInput()
-//   //   getInputMock.mockImplementation((name: string): string => {
-//   //     switch (name) {
-//   //       case 'milliseconds':
-//   //         return 'this is not a number'
-//   //       default:
-//   //         return ''
-//   //     }
-//   //   })
-
-//   //   await main.run()
-//   //   expect(runMock).toHaveReturned()
-
-//   //   // Verify that all of the core library functions were called correctly
-//   //   expect(setFailedMock).toHaveBeenNthCalledWith(
-//   //     1,
-//   //     'milliseconds not a number'
-//   //   )
-//   //   expect(errorMock).not.toHaveBeenCalled()
-//   // })
-// })
+let errorMock: jest.SpyInstance
+let getInputMock: jest.SpyInstance
+let addPathMock: jest.SpyInstance
+let downloadToolMock: jest.SpyInstance
+let extractTarMock: jest.SpyInstance
+
+describe('action', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+
+    getInputMock = jest.spyOn(core, 'getInput').mockImplementation()
+    addPathMock = jest.spyOn(core, 'addPath').mockImplementation()
+    errorMock = jest.spyOn(core, 'setFailed').mockImplementation()
+    downloadToolMock = jest.spyOn(tc, 'downloadTool').mockImplementation()
+    extractTarMock = jest.spyOn(tc, 'extractTar').mockImplementation()
+  })
+
+  it('sets the version output', async () => {
+    // Set the action's inputs as return values from core.getInput()
+    getInputMock.mockImplementation((name: string): string => {
+      switch (name) {
+        case 'version':
+          return 'v0.0.18'
+        default:
+          return ''
+      }
+    })
+
+    await main.run()
+    expect(runMock).toHaveReturned()
+    expect(errorMock).not.toHaveBeenCalled()
+    expect(downloadToolMock).toHaveBeenCalled()
+    expect(extractTarMock).toHaveBeenCalled()
+    expect(addPathMock).toHaveBeenCalled()
+  })
+})