java - 如何使用Gradle覆盖android测试路径？

Question

由于历史原因，检测测试未存储在androidTests目录as required中，并且我无法更改目录结构(实际上整个应用程序都是针对所用库的测试)。我能够使用gradle构建和安装apk，但未找到测试:

:app-tests:connectedDebugAndroidTest
Tests on test_avd(AVD) - 4.1.2 failed: Instrumentation run failed due to 'java.lang.ClassNotFoundException'

com.android.builder.testing.ConnectedDevice > No tests found.[test_avd(AVD) - 4.1.2] FAILED 
No tests found. This usually means that your test classes are not in the form that your test runner expects (e.g. don't inherit from TestCase or lack @Test annotations).
:app-tests:connectedDebugAndroidTest FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app-tests:connectedDebugAndroidTest'.
> There were failing tests. See the report at: file:///Users/asmirnov/Documents/dev/src/project/app-tests/build/reports/androidTests/connected/index.html

实际上，这些测试位于 src文件夹中，编写正确，可以使用Ant构建/运行:

public abstract class BaseTest extends AndroidTestCase
{
...

public class AppInfoTest extends BaseTest
{
    @Test
    public void testAllProperties()
    {
        ...

...

我怎样才能使Gradle将 src文件夹作为android(仪器)测试进行处理？

这是我当前的 build.gradle文件(它使用 experimental Android Gradle plugin版本0.7.2，因为我们有NDK库):

apply plugin: 'com.android.model.application'

allprojects {
    repositories {
        mavenLocal()
        mavenCentral()
    }
}

repositories {
    mavenLocal()
    mavenCentral()
}

model {
    android {
        compileSdkVersion 16
        buildToolsVersion "22.0.1"

        defaultConfig {
            applicationId "app.tests"
            minSdkVersion.apiLevel 9
            targetSdkVersion.apiLevel 16
            versionCode 359
            versionName "1.3"

            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }

        sources {
            main {
                // overriding paths from default ones to actual ones
                // what about 'androidTests' ?
                manifest { source {
                    srcDir '.'
                    include 'AndroidManifest.xml'
                } }
                java { source { srcDirs = ['src'] } }
                res { source { srcDirs = ['res'] } }
                jni {
                    dependencies {
                        project ":library" // native library dependency
                    }
                }
            }
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile project(':library')
}

更新1(用于sschuberth):

配置:

apply plugin: 'com.android.model.application'

allprojects {
    repositories {
        mavenLocal()
        mavenCentral()
    }
}

repositories {
    mavenLocal()
    mavenCentral()
}

model {
    android {
        compileSdkVersion 16
        buildToolsVersion "22.0.1"

        defaultConfig {
            applicationId "app.tests"
            minSdkVersion.apiLevel 9
            targetSdkVersion.apiLevel 16
            versionCode 359
            versionName "1.3"

            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }

        sourceSets {
            androidTest {
                manifest.srcFile 'AndroidManifest.xml' // error here
                java.srcDirs = ['src']
                res.srcDirs = ['res']
                assets.srcDirs = ['assets']
            }
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile project(':library')
}

错误

FAILURE: Build failed with an exception.

* Where:
Build file '/Users/asmirnov/Documents/dev/src/project/app-tests/build.gradle' line: 32

* What went wrong:
A problem occurred configuring project ':app-tests'.
> Exception thrown while executing model rule: android { ... } @ app-tests/build.gradle line 16, column 5
   > Could not find property 'manifest' on source set 'android test'.

Answer 1

代替sources {}，您应该使用sourceSets {}和androidTest源集来自定义测试源代码的位置:

model { // Required for experimental plugin.
    android {
        sourceSets {
            androidTest {
                manifest.srcFile '../AppTest/AndroidManifest.xml'
                java.srcDirs = ['../AppTest/src']
                res.srcDirs = ['../AppTest/res']
                assets.srcDirs = ['../AppTest/assets']
            }
        }
    }
}

请注意，这不适用于单元测试。对于单元测试(例如 Robolectric)，请使用 test源集。