test: add unit tests for some action input validation

Signed-off-by: Sebastian Beltran <[email protected]>

Author: bjohansebas

__tests__/action.test.js

@@ -0,0 +1,34 @@
+const core = require('@actions/core')
+const main = require('../src/action')
+
+// Mock the GitHub Actions core library
+const debugMock = jest.spyOn(core, 'debug').mockImplementation()
+const getInputMock = jest.spyOn(core, 'getInput').mockImplementation()
+const setFailedMock = jest.spyOn(core, 'setFailed').mockImplementation()
+const setOutputMock = jest.spyOn(core, 'setOutput').mockImplementation()
+
+// Mock the action's main function
+const runMock = jest.spyOn(main, 'run')
+
+describe('action', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  it.each(["scope", "database", "report"])('should throw an error if the %s is not provided', async (input) => {
+    getInputMock.mockImplementation(name => {
+      if (name === input) {
+        throw new Error(`Input required and not supplied: ${input}`)
+      }
+
+      return ''
+    })
+    await main.run()
+
+    expect(runMock).toHaveReturned()
+    expect(setFailedMock).toHaveBeenNthCalledWith(
+      1,
+      `Input required and not supplied: ${input}`
+    )
+  })
+})