separate action and execution (#77)

src/action.test.ts

@@ -0,0 +1,30 @@
+import {getRequiredInputError} from '../tests/util'
+import {run} from './action'
+import fs from 'fs'
+import * as utils from './utils'
+
+describe('Run', () => {
+   it('throws error without cluster type', async () => {
+      await expect(run()).rejects.toThrow(getRequiredInputError('cluster-type'))
+   })
+
+   it('writes kubeconfig and sets context', async () => {
+      const kubeconfig = 'kubeconfig'
+
+      process.env['INPUT_CLUSTER-TYPE'] = 'default'
+      process.env['RUNNER_TEMP'] = '/sample/path'
+
+      jest
+         .spyOn(utils, 'getKubeconfig')
+         .mockImplementation(async () => kubeconfig)
+      jest.spyOn(fs, 'writeFileSync').mockImplementation(() => {})
+      jest.spyOn(fs, 'chmodSync').mockImplementation(() => {})
+      jest.spyOn(utils, 'setContext').mockImplementation(() => kubeconfig)
+
+      expect(await run())
+      expect(utils.getKubeconfig).toHaveBeenCalled()
+      expect(fs.writeFileSync).toHaveBeenCalled()
+      expect(fs.chmodSync).toHaveBeenCalled()
+      expect(utils.setContext).toHaveBeenCalled()
+   })
+})