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Merge pull request #43 from GoogleCloudPlatform/appidentity
Add an App Identity example.
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‎appengine/appidentity/.gitignore‎

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# Eclipse files
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.project
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.classpath
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.settings
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# Target folders
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target/

‎appengine/appidentity/README.md‎

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# App Identity sample for Google App Engine
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This sample demonstrates how to use the App Identity APIs on Google App Engine
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## Running locally
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This example uses the
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[Maven gcloud plugin](https://cloud.google.com/appengine/docs/java/managed-vms/maven).
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To run this sample locally:
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$ mvn gcloud:run
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## Deploying
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In the following command, replace YOUR-PROJECT-ID with your
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[Google Cloud Project ID](https://developers.google.com/console/help/new/#projectnumber).
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$ mvn gcloud:deploy -Dgcloud_project=YOUR-PROJECT-ID
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## Setup
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To save your project settings so that you don't need to enter the
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`-Dgcloud_project=YOUR-CLOUD-PROJECT-ID` parameters, you can:
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1. Update the <application> tag in src/main/webapp/WEB-INF/appengine-web.xml
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with your project name.
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You will now be able to run
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$ mvn gcloud:deploy
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without the need for any additional paramters.

‎appengine/appidentity/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Copyright 2015 Google Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<packaging>war</packaging>
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<version>1.0-SNAPSHOT</version>
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<groupId>com.example.appengine</groupId>
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<artifactId>appidentity</artifactId>
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<properties>
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<appengine.target.version>1.9.30</appengine.target.version>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.google.appengine</groupId>
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<artifactId>appengine-api-1.0-sdk</artifactId>
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<version>${appengine.target.version}</version>
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</dependency>
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>servlet-api</artifactId>
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<version>2.5</version>
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<type>jar</type>
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<scope>provided</scope>
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</dependency>
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<!-- Test Dependencies -->
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.10</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-all</artifactId>
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<version>1.10.19</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>com.google.appengine</groupId>
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<artifactId>appengine-testing</artifactId>
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<version>${appengine.target.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>com.google.appengine</groupId>
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<artifactId>appengine-api-stubs</artifactId>
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<version>${appengine.target.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>com.google.appengine</groupId>
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<artifactId>appengine-tools-sdk</artifactId>
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<version>${appengine.target.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>com.google.truth</groupId>
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<artifactId>truth</artifactId>
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<version>0.27</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<!-- for hot reload of the web application -->
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<outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<version>3.3</version>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>1.7</source>
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<target>1.7</target>
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</configuration>
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</plugin>
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<plugin>
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<groupId>com.google.appengine</groupId>
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<artifactId>gcloud-maven-plugin</artifactId>
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<version>2.0.9.90.v20151210</version>
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</plugin>
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</plugins>
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</build>
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</project>

‎appengine/appidentity/src/main/java/com/example/appengine/appidentity/IdentityServlet.java‎

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/**
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* Copyright 2015 Google Inc. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.appengine.appidentity;
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import com.google.apphosting.api.ApiProxy;
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import com.google.apphosting.api.ApiProxy.Environment;
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import java.io.IOException;
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import java.io.PrintWriter;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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@SuppressWarnings("serial")
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public class IdentityServlet extends HttpServlet {
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// [START versioned_hostnames]
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@Override
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public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
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resp.setContentType("text/plain");
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ApiProxy.Environment env = ApiProxy.getCurrentEnvironment();
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resp.getWriter().print("default_version_hostname: ");
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resp.getWriter()
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.println(env.getAttributes().get("com.google.appengine.runtime.default_version_hostname"));
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}
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// [END versioned_hostnames]
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}

‎appengine/appidentity/src/main/webapp/WEB-INF/appengine-web.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
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<application>YOUR-PROJECT-ID</application>
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<threadsafe>true</threadsafe>
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<vm>true</vm>
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</appengine-web-app>

‎appengine/appidentity/src/main/webapp/WEB-INF/web.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
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xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
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xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
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version="2.5">
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<servlet>
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<servlet-name>appidentity</servlet-name>
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<servlet-class>com.example.appengine.appidentity.IdentityServlet</servlet-class>
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</servlet>
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<servlet-mapping>
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<servlet-name>appidentity</servlet-name>
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<url-pattern>/</url-pattern>
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</servlet-mapping>
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</web-app>

‎appengine/appidentity/src/test/java/com/example/appengine/appidentity/IdentityServletTest.java‎

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/**
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* Copyright 2015 Google Inc. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.appengine.appidentity;
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import static com.google.common.truth.Truth.assertThat;
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import static org.junit.Assert.fail;
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import static org.mockito.Mockito.mock;
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import static org.mockito.Mockito.when;
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import com.google.appengine.tools.development.ApiProxyLocal;
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import com.google.appengine.tools.development.testing.LocalServiceTestHelper;
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import com.google.apphosting.api.ApiProxy;
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import org.mockito.Mock;
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import org.mockito.Mockito;
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import org.mockito.MockitoAnnotations;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.JUnit4;
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import java.io.File;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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/** Unit tests for {@link IdentityServlet}. */
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@RunWith(JUnit4.class)
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public class IdentityServletTest {
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// Set up a helper so that the ApiProxy returns a valid environment for local testing.
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private final LocalServiceTestHelper helper = new LocalServiceTestHelper();
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@Mock private HttpServletRequest mockRequest;
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@Mock private HttpServletResponse mockResponse;
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private StringWriter responseWriter;
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private IdentityServlet servletUnderTest;
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@Before
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public void setUp() throws Exception {
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MockitoAnnotations.initMocks(this);
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helper.setUp();
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// Set up a fake HTTP response.
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responseWriter = new StringWriter();
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when(mockResponse.getWriter()).thenReturn(new PrintWriter(responseWriter));
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servletUnderTest = new IdentityServlet();
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}
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@Test
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public void doGet_defaultEnvironment_writesResponse() throws Exception {
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servletUnderTest.doGet(mockRequest, mockResponse);
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// We don't have any guarantee over what the local App Engine environment returns for
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// "com.google.appengine.runtime.default_version_hostname". Only assert that the response
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// contains part of the string we have control over.
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assertThat(responseWriter.toString())
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.named("IdentityServlet response")
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.contains("default_version_hostname:");
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}
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}

‎pom.xml‎

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</prerequisites>
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<modules>
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<module>appengine/appidentity</module>
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<module>taskqueue/deferred</module>
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<module>unittests</module>
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<module>bigquery</module>

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