add unit tests

__tests__/functions/commit-safety-checks.test.js

@@ -0,0 +1,57 @@
+import {commitSafetyChecks} from '../../src/functions/commit-safety-checks'
+import * as core from '@actions/core'
+
+const debugMock = jest.spyOn(core, 'debug').mockImplementation(() => {})
+
+var data
+var context
+beforeEach(() => {
+  jest.clearAllMocks()
+  jest.spyOn(core, 'debug').mockImplementation(() => {})
+
+  context = {
+    payload: {
+      comment: {
+        created_at: '2024-10-15T12:00:00Z'
+      }
+    }
+  }
+
+  data = {
+    commit: {
+      author: {
+        date: '2024-10-15T11:00:00Z'
+      }
+    }
+  }
+})
+
+test('checks a commit and finds that it is safe (date)', async () => {
+  expect(await commitSafetyChecks(context, data)).toStrictEqual({
+    message: 'success',
+    status: true
+  })
+  expect(debugMock).toHaveBeenCalledWith(
+    '2024-10-15T12:00:00Z is not older than 2024-10-15T11:00:00Z'
+  )
+})
+
+test('checks a commit and finds that it is not safe (date)', async () => {
+  data.commit.author.date = '2024-10-15T12:00:01Z'
+
+  expect(await commitSafetyChecks(context, data)).toStrictEqual({
+    message:
+      '### ⚠️ Cannot proceed with deployment\n\nThe latest commit is not safe for deployment. It was authored after the trigger comment was created.',
+    status: false
+  })
+  expect(debugMock).toHaveBeenCalledWith(
+    '2024-10-15T12:00:00Z is older than 2024-10-15T12:00:01Z'
+  )
+})
+
+test('raises an error if the date format is invalid', async () => {
+  data.commit.author.date = '2024-10-15T12:00:uhoh'
+  await expect(commitSafetyChecks(context, data)).rejects.toThrow(
+    'Invalid date format. Please ensure the dates are valid UTC timestamps.'
+  )
+})

__tests__/main.test.js

@@ -910,12 +910,15 @@ test('fails prechecks', async () => {
 })
 
 test('fails commitSafetyChecks', async () => {
-  jest.spyOn(commitSafetyChecks, 'commitSafetyChecks').mockImplementation(() => {
-    return {
-      status: false,
-      message: '### ⚠️ Cannot proceed with deployment... a scary commit was found',
-    }
-  })
+  jest
+    .spyOn(commitSafetyChecks, 'commitSafetyChecks')
+    .mockImplementation(() => {
+      return {
+        status: false,
+        message:
+          '### ⚠️ Cannot proceed with deployment... a scary commit was found'
+      }
+    })
   jest.spyOn(actionStatus, 'actionStatus').mockImplementation(() => {
     return undefined
   })