Adding command config:remove (#1160)

* Adding command config:remove

* Adding missing flag description

Author: munozemilio

packages/config/src/commands/config/remove.ts

@@ -0,0 +1,26 @@
+/*!
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License.
+ */
+
+import {Command, flags} from '@microsoft/bf-cli-command'
+import {getConfigFile, writeConfigFile, Config} from './../../utils/configfilehandler'
+
+export default class ConfigRemove extends Command {
+  static description = 'Removes the specified key from the config file'
+
+  static flags: flags.Input<any> = {
+    help: flags.help({char: 'h', description: 'config:remove help'}),
+    key: flags.string({char: 'k', description: 'Name of the key to remove', required: true}),
+  }
+
+  async run() {
+    const {flags} = this.parse(ConfigRemove)
+    let userConfig: Config = await getConfigFile(this.config.configDir)
+    if (userConfig[flags.key]) {
+      delete userConfig[flags.key]
+      await writeConfigFile(this.config.configDir, userConfig)
+    }
+    this.log(`${flags.key} deleted`)
+  }
+}

packages/config/test/commands/config/remove.test.ts

@@ -0,0 +1,30 @@
+import {expect, test} from '@oclif/test'
+import {initTestConfigFile, deleteTestConfigFile, getConfigFile} from './../../configfilehelper'
+
+const fs = require('fs-extra')
+
+describe('config:remove', () => {
+  before(async function() {
+    await initTestConfigFile()
+  });
+
+  after(async function() {
+    await deleteTestConfigFile()
+  });
+
+  test
+    .stdout()
+    .command(['config:set', '--key', 'a', '--value', 'b'])
+    .it('Adds a value in config file', async ctx => {
+      let config = await fs.readJSON(getConfigFile())
+      expect(config.a).to.contain('b')
+  })
+
+  test
+  .stdout()
+  .command(['config:remove', '--key', 'a'])
+  .it('Removes value from config file', async ctx => {
+    let config = await fs.readJSON(getConfigFile())
+    expect(config.a).to.equal(undefined)
+  })
+})