Add support for dependency caching.

- Fork relevant bits from https://github.com/actions/setup-java
- Use Node.js 16
- Adjust packaging
- Update uuid and other dependencies

Closes #11

__tests__/cleanup.test.ts

@@ -0,0 +1,101 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 GitHub, Inc. and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * Forked from https://github.com/actions/setup-java/blob/5b36705a13905facb447b6812d613a06a07e371d/__tests__/cleanup-java.test.ts
+ */
+
+import {run as cleanup} from '../src/cleanup'
+import * as core from '@actions/core'
+import * as cache from '@actions/cache'
+import * as util from '../src/utils'
+
+describe('cleanup', () => {
+  let spyWarning: jest.SpyInstance<void, Parameters<typeof core.warning>>
+  let spyInfo: jest.SpyInstance<void, Parameters<typeof core.info>>
+  let spyCacheSave: jest.SpyInstance<
+    ReturnType<typeof cache.saveCache>,
+    Parameters<typeof cache.saveCache>
+  >
+  let spyJobStatusSuccess: jest.SpyInstance
+
+  beforeEach(() => {
+    spyWarning = jest.spyOn(core, 'warning')
+    spyWarning.mockImplementation(() => null)
+    spyInfo = jest.spyOn(core, 'info')
+    spyInfo.mockImplementation(() => null)
+    spyCacheSave = jest.spyOn(cache, 'saveCache')
+    spyJobStatusSuccess = jest.spyOn(util, 'isJobStatusSuccess')
+    spyJobStatusSuccess.mockReturnValue(true)
+    createStateForSuccessfulRestore()
+  })
+  afterEach(() => {
+    resetState()
+  })
+
+  it('does not fail nor warn even when the save provess throws a ReserveCacheError', async () => {
+    spyCacheSave.mockImplementation((paths: string[], key: string) =>
+      Promise.reject(
+        new cache.ReserveCacheError(
+          'Unable to reserve cache with key, another job may be creating this cache.'
+        )
+      )
+    )
+    jest.spyOn(core, 'getInput').mockImplementation((name: string) => {
+      return name === 'cache' ? 'gradle' : ''
+    })
+    await cleanup()
+    expect(spyCacheSave).toBeCalled()
+    expect(spyWarning).not.toBeCalled()
+  })
+
+  it('does not fail even though the save process throws error', async () => {
+    spyCacheSave.mockImplementation((paths: string[], key: string) =>
+      Promise.reject(new Error('Unexpected error'))
+    )
+    jest.spyOn(core, 'getInput').mockImplementation((name: string) => {
+      return name === 'cache' ? 'gradle' : ''
+    })
+    await cleanup()
+    expect(spyCacheSave).toBeCalled()
+  })
+})
+
+function resetState() {
+  jest.spyOn(core, 'getState').mockReset()
+}
+
+/**
+ * Create states to emulate a successful restore process.
+ */
+function createStateForSuccessfulRestore() {
+  jest.spyOn(core, 'getState').mockImplementation(name => {
+    switch (name) {
+      case 'cache-primary-key':
+        return 'setup-java-cache-primary-key'
+      case 'cache-matched-key':
+        return 'setup-java-cache-matched-key'
+      default:
+        return ''
+    }
+  })
+}