MockPromptForString + doctor to work with ValidatePathError.

packages/cli/src/lib/cmds/doctor.ts

@@ -21,10 +21,10 @@ import {enUS as messages} from '../strings';
 async function jdkDoctor(config: Config, log: Log): Promise<boolean> {
   const result = await JdkHelper.validatePath(config.jdkPath);
   if (result.isError()) {
-    if (result.unwrapError().message === 'jdkPathIsNotCorrect') {
+    if (result.unwrapError().getErrorCode() === 'PathIsNotCorrect') {
       log.error(messages.jdkPathIsNotCorrect);
       return false;
-    } else if (result.unwrapError().message === 'jdkIsNotSupported') {
+    } else if (result.unwrapError().getErrorCode() === 'PathIsNotSupported') {
       log.error(messages.jdkIsNotSupported);
       return false;
     } else { // Error while reading the file, will print the error message.

packages/cli/src/spec/mock/MockPromptForStrings.ts

@@ -0,0 +1,107 @@
+/*
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ *
+ *  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 {Prompt, ValidateFunction} from '../../lib/Prompt';
+
+/**
+ * A class which used for testing and which mocks user's input.
+ */
+export class MockPromptForStrings implements Prompt {
+  private responses: string[] = [];
+
+  /**
+   * Sets the next answer of this class to be the given message.
+   * @param message the message to be returned in the next prompt message.
+   */
+  addMessage(message: string): void {
+    this.responses.push(message);
+  }
+
+  async printMessage(): Promise<void> {
+    // An empty function for testing.
+  }
+
+  /**
+   * Sets the output to be the given message.
+   * @param message the message to be prompt. Not relevant for tests.
+   * @param {string | null} defaultValue a default value or null.
+   * @param {ValidateFunction<T>} validateFunction a function to validate the input.
+   * @returns {Promise<T>} a {@link Promise} that resolves to the validated loaded message,
+   * converted to `T` by the `validateFunction`.
+   */
+  async promptInput<T>(_message: string,
+      _defaultValue: string | null,
+      validateFunction: ValidateFunction<T>): Promise<T> {
+    const nextResponse = this.getNextMessage();
+    return (await validateFunction(nextResponse)).unwrap();
+  }
+
+  /**
+   * Sets the output to be the given message.
+   * @param message the message to be prompt. Not relevant for tests.
+   * @param {string[]} choices a list of choices. Not relevant for testing.
+   * @param {string | null} defaultValue a default value or null.
+   * @param {ValidateFunction<T>} validateFunction a function to validate the input.
+   * @returns {Promise<T>} a {@link Promise} that resolves to the validated loaded message,
+   * converted to `T` by the `validateFunction`.
+   */
+  async promptChoice<T>(_message: string,
+      _choices: string[],
+      _defaultValue: string | null,
+      validateFunction: ValidateFunction<T>): Promise<T> {
+    const nextResponse = this.getNextMessage();
+    return (await validateFunction(nextResponse)).unwrap();
+  }
+
+  /**
+   * Sets the output to be the given message.
+   * @param message the message to be prompt. Not relevant for tests.
+   * @param defaultValue the value to be returned
+   * @returns {Promise<boolean>} a {@link Promise} that resolves to a {@link boolean} value. The
+   * value will the `true` if the user answers `Yes` and `false` for `No`.
+   */
+  async promptConfirm(_message: string, defaultValue: boolean): Promise<boolean> {
+    return defaultValue;
+  }
+
+  /**
+   * Sets the output to be the given message.
+   * @param message the message to be prompt. Not relevant for tests.
+   * @param {ValidateFunction<T>} validateFunction a function to validate the input.
+   * @returns {Promise<string>} a {@link Promise} that resolves to the user input validated by
+   * `validateFunction`.
+   */
+  async promptPassword(_message: string, validateFunction: ValidateFunction<string>,
+  ): Promise<string> {
+    const nextResponse = this.getNextMessage();
+    return (await validateFunction(nextResponse)).unwrap();
+  }
+
+  /**
+   * Sets the output to be the given message.
+   * @param {ValidateFunction<T>} validateFunction a function to validate the input.
+   * @returns {string} which is the next message to be prompted`.
+   */
+  private getNextMessage(): string {
+    if (this.responses.length < 0) {
+      throw new Error('No answer was given. Please use addMessage(NextResponse) before' +
+      ' using this function');
+    }
+    const nextResponse = this.responses[this.responses.length];
+    this.responses.pop();
+    return nextResponse;
+  }
+}

packages/core/src/index.ts

@@ -28,7 +28,6 @@ import {TwaGenerator} from './lib/TwaGenerator';
 import {DigitalAssetLinks} from './lib/DigitalAssetLinks';
 import * as util from './lib/util';
 import {Result} from './lib/Result';
-import {ValidatePathError} from './lib/errors/ValidatePathError';
 
 export {AndroidSdkTools,
   Config,
@@ -48,5 +47,4 @@ export {AndroidSdkTools,
   util,
   Result,
   SigningKeyInfo,
-  ValidatePathError,
 };