no need to test param is required

__tests__/main.test.ts

@@ -1,11 +1,9 @@
-import {run} from '../src/run'
-import * as dd from '../src/datadog'
-import * as process from 'process'
-import * as core from '@actions/core'
 import * as cp from 'child_process'
-import * as path from 'path'
 import * as yaml from 'js-yaml'
-import {getHeapStatistics} from 'v8'
+import * as path from 'path'
+import * as process from 'process'
+import * as dd from '../src/datadog'
+import {run} from '../src/run'
 jest.mock('../src/datadog')
 
 describe('unit-tests', () => {
@@ -21,18 +19,6 @@ describe('unit-tests', () => {
     jest.clearAllMocks()
   })
 
-  test('api-key input param must be set', async () => {
-    process.env['INPUT_API-KEY'] = ''
-    await run()
-    expect(dd.sendMetrics).toHaveBeenCalledTimes(0)
-    expect(dd.sendEvents).toHaveBeenCalledTimes(0)
-    expect(dd.sendServiceChecks).toHaveBeenCalledTimes(0)
-    expect(dd.sendLogs).toHaveBeenCalledTimes(0)
-    expect(outSpy).toHaveBeenCalledWith(
-      '::error::Run failed: Input required and not supplied: api-key\n'
-    )
-  })
-
   test('default api endpoint URL', async () => {
     await run()
     expect(dd.sendMetrics).toHaveBeenCalledWith(