minor updates

__tests__/main.test.ts

@@ -0,0 +1,82 @@
+/**
+ * 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 os from 'os'
+import * as main from '../src/main'
+
+// // Mock the action's main function
+const runMock = jest.spyOn(main, 'run')
+
+jest.mock('os')
+
+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()
+
+    os.platform = jest.fn().mockReturnValue('linux')
+    os.arch = jest.fn().mockReturnValue('amd64')
+  })
+
+  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 'v2.7.2'
+        default:
+          return ''
+      }
+    })
+
+    downloadToolMock.mockImplementation((dlUrl: string): string => {
+      switch (dlUrl) {
+        case 'https://github.com/dbsnapper/dbsnapper/releases/download/v2.7.2/dbsnapper_2.7.2_linux_amd64.tar.gz':
+          return 'fake-tar-path'
+        default:
+          return ''
+      }
+    })
+    extractTarMock.mockImplementation((tarPath: string): string => {
+      switch (tarPath) {
+        case 'fake-tar-path':
+          return '/path/to/tarball'
+        default:
+          return ''
+      }
+    })
+    addPathMock.mockImplementation((cliPath: string): void => {
+      switch (cliPath) {
+        case '/path/to/tarball':
+          return
+        default:
+          throw new Error('test: invalid cli path')
+      }
+    })
+
+    await main.run()
+    expect(runMock).toHaveReturned()
+    expect(errorMock).not.toHaveBeenCalled()
+    expect(downloadToolMock).toHaveBeenCalled()
+    expect(extractTarMock).toHaveBeenCalled()
+    expect(addPathMock).toHaveBeenCalled()
+  })
+})

__tests__/util.test.ts

@@ -0,0 +1,30 @@
+import { expect, test } from '@jest/globals'
+import { getDownloadUrl } from '../src/util'
+
+import os from 'os'
+
+jest.mock('os')
+
+describe('util.ts', () => {
+  test('get latest download url', async () => {
+    os.platform = jest.fn().mockReturnValue('linux')
+    os.arch = jest.fn().mockReturnValue('amd64')
+
+    await expect(getDownloadUrl('latest')).resolves.toBeTruthy()
+  })
+
+  test('get specific version download url', async () => {
+    const version = '2.7.2'
+    const ops = 'linux'
+    const arch = 'amd64'
+    const filename = `dbsnapper_${version}_${ops}_${arch}`
+
+    os.platform = jest.fn().mockReturnValue(ops)
+    os.arch = jest.fn().mockReturnValue(arch)
+
+    const url = await getDownloadUrl(version)
+    expect(url).toEqual(
+      `https://github.com/dbsnapper/dbsnapper/releases/download/v${version}/${filename}.tar.gz`
+    )
+  })
+})