move docker under dedicated folder

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

__tests__/docker/docker.test.ts

@@ -0,0 +1,91 @@
+/**
+ * Copyright 2023 actions-toolkit authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {afterEach, beforeEach, describe, expect, it, jest} from '@jest/globals';
+import path from 'path';
+import * as io from '@actions/io';
+import osm = require('os');
+
+import {Docker} from '../../src/docker/docker';
+import {Exec} from '../../src/exec';
+
+beforeEach(() => {
+  jest.clearAllMocks();
+});
+
+describe('configDir', () => {
+  const originalEnv = process.env;
+  beforeEach(() => {
+    jest.resetModules();
+    process.env = {
+      ...originalEnv,
+      DOCKER_CONFIG: '/var/docker/config'
+    };
+  });
+  afterEach(() => {
+    process.env = originalEnv;
+  });
+  it('returns default', async () => {
+    process.env.DOCKER_CONFIG = '';
+    jest.spyOn(osm, 'homedir').mockImplementation(() => path.join('/tmp', 'home'));
+    expect(Docker.configDir).toEqual(path.join('/tmp', 'home', '.docker'));
+  });
+  it('returns from env', async () => {
+    expect(Docker.configDir).toEqual('/var/docker/config');
+  });
+});
+
+describe('isAvailable', () => {
+  it('cli', async () => {
+    const ioWhichSpy = jest.spyOn(io, 'which');
+    await Docker.isAvailable();
+    expect(ioWhichSpy).toHaveBeenCalledTimes(1);
+    expect(ioWhichSpy).toHaveBeenCalledWith('docker', true);
+  });
+});
+
+describe('context', () => {
+  it('call docker context show', async () => {
+    const execSpy = jest.spyOn(Exec, 'getExecOutput');
+    await Docker.context().catch(() => {
+      // noop
+    });
+    expect(execSpy).toHaveBeenCalledWith(`docker`, ['context', 'inspect', '--format', '{{.Name}}'], {
+      ignoreReturnCode: true,
+      silent: true
+    });
+  });
+});
+
+describe('printVersion', () => {
+  it('call docker version', async () => {
+    const execSpy = jest.spyOn(Exec, 'exec');
+    await Docker.printVersion().catch(() => {
+      // noop
+    });
+    expect(execSpy).toHaveBeenCalledWith(`docker`, ['version']);
+  });
+});
+
+describe('printInfo', () => {
+  it('call docker info', async () => {
+    const execSpy = jest.spyOn(Exec, 'exec');
+    await Docker.printInfo().catch(() => {
+      // noop
+    });
+    expect(execSpy).toHaveBeenCalledWith(`docker`, ['info']);
+  });
+});