Robolectric与摇篮：找不到资源 [英] Robolectric with Gradle: Resources not found

问题描述

我试图运行我Robolectric新摇篮Android编译系统一起测试，但我被困在访问我的主项目的资源。

I'm trying to run my Robolectric tests together with the new Gradle Android build system, but I'm stuck at accessing the resources of my main project.

我分裂构建成两个独立的项目，以避免的Java 和机器人摇篮插件之间的冲突，所以目录结构看起来大致是这样的：

I split the build into two separate projects to avoid conflicts between the java and the android gradle plugins, so the directory structure looks roughly like this:

.
├── build.gradle
├── settings.gradle
├── mainproject
│   ├── build
│   │   ├── classes
│   │   │   └── debug
│   ├── build.gradle
│   └── src
│       └── main
│           ├── AndroidManifest.xml
│           └── ...
└── test
    ├── build.gradle
    └── src
        └── test
            └── java
                └── ...
                    └── test
                        ├── MainActivityTest.java
                        ├── Runner.java
                        ├── ServerTestCase.java
                        └── StatusFetcherTest.java

我的 build.gradle 在测试/ 目前看起来是这样的：

My build.gradle in test/ currently looks like this:

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath 'com.stanfy.android:gradle-plugin-java-robolectric:2.0'
    }
}

apply plugin: 'java-robolectric'

repositories {...}

javarob {
    packageName = 'com.example.mainproject'
}

test {
    dependsOn ':mainproject:build'
    scanForTestClasses = false
    include "**/*Test.class"
    // Oh, the humanity!
    def srcDir = project(':mainproject').android.sourceSets.main.java.srcDirs.toArray()[0].getAbsolutePath()
    workingDir srcDir.substring(0, srcDir.lastIndexOf('/'))
}

project(':mainproject').android.sourceSets.main.java.srcDirs.each {dir ->
    def buildDir = dir.getAbsolutePath().split('/')
    buildDir =  (buildDir[0..(buildDir.length - 4)] + ['build', 'classes', 'debug']).join('/')

    sourceSets.test.compileClasspath += files(buildDir)
    sourceSets.test.runtimeClasspath += files(buildDir)
}

dependencies {    
    testCompile group: 'com.google.android', name: 'android', version: '4.1.1.4'
    testCompile group: 'org.robolectric', name: 'robolectric', version: '2.0-alpha-3'
    ...
}

邪恶的类路径两轮牛车让我来访问我的主要项目的所有类别，除了研究，它的存​​在为的.class 在build目录下的文件，但提出了一个 compileTestJava 任务，在此错误：

The evil classpath hackery allows me to access all classes of my main project, except for R, which exists as .class file in the build directory, but raises this error during the compileTestJava task:

/.../MainActivityTest.java:16: error: cannot find symbol
                final String appName = activity.getResources().getString(R.string.app_name);
                                                                          ^
  symbol:   variable string
  location: class R
1 error
:test:compileTestJava FAILED

必须有一个更好的办法来执行Robolectric测试新的构建系统，对吧？

There must be a better way to execute Robolectric tests with the new build system, right?

（的应用的完整源）

推荐答案

我过这个同样的问题跑，这就是我想出了。而不是创建为测试一个单独的项目中，我创造了Robolectric测试设置一个信号源，并增加了新的任务，检查将取决于。从你的问题用一些code，这里的（工作）建立文件的相关位：

I was running across this same issue and this is what I came up with. Instead of creating a separate project for the tests, I created a source set for the Robolectric tests and added a new task that "check" would depend on. Using some of the code from your question, here are the relevant bits of the (working) build file:

apply plugin: 'android'

sourceSets {
    testLocal {
        java.srcDir file('src/test/java')
        resources.srcDir file('src/test/resources')
    }
}

dependencies {
    compile 'org.roboguice:roboguice:2.0'
    compile 'com.google.android:support-v4:r6'

    testLocalCompile 'junit:junit:4.8.2'
    testLocalCompile 'org.robolectric:robolectric:2.1'
    testLocalCompile 'com.google.android:android:4.0.1.2'
    testLocalCompile 'com.google.android:support-v4:r6'
    testLocalCompile 'org.roboguice:roboguice:2.0'
}

task localTest(type: Test, dependsOn: assemble) {
    testClassesDir = sourceSets.testLocal.output.classesDir

    android.sourceSets.main.java.srcDirs.each { dir ->
        def buildDir = dir.getAbsolutePath().split('/')
        buildDir =  (buildDir[0..(buildDir.length - 4)] + ['build', 'classes', 'debug']).join('/')

        sourceSets.testLocal.compileClasspath += files(buildDir)
        sourceSets.testLocal.runtimeClasspath += files(buildDir)
    }

    classpath = sourceSets.testLocal.runtimeClasspath
}

check.dependsOn localTest

我包括我的依赖块指出的是，为了让我得到这件事中去，我不得不重复了我所有的编译依赖于我的自定义 testLocal 源集。

I've included my dependencies block to point out that in order for me to get this up and going, I had to repeat all of my compile dependencies in my custom testLocal source set.

运行摇篮testLocal 构建并运行刚内的src /测试/ java的，而运行<$测试C $ C>摇篮检查除了那些在默认的Andr​​oid instrumentTest源集运行这些测试。

Running gradle testLocal builds and runs just the tests inside of src/test/java, while running gradle check runs these tests in addition to those in the default android instrumentTest source set.

希望这有助于！

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