# TestComponent

# TestComponent

[View Source](https://cs.android.com/search?q=file:com/android/build/api/variant/TestComponent.kt+class:com.android.build.api.variant.TestComponent)  
Added in 7.0.0  


```
interface TestComponent : Component
```

<br />

Known direct subclasses  
[DeviceTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/DeviceTest), [HostTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/HostTest), [UnitTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/UnitTest)  

|---------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------|
| [DeviceTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/DeviceTest) | Model for Device Test components that contains build-time properties                                                             |
| [HostTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/HostTest)     | Model for Host Test components that contains build-time properties.                                                              |
| [UnitTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/UnitTest)     | [Component](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component) for unit tests |

Known indirect subclasses  
[AndroidTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/AndroidTest), [UnitTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/component/UnitTest)  

|-----------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------|
| [AndroidTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/AndroidTest) | Model for Android Test components that contains build-time properties           |
| [UnitTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/component/UnitTest)     | **This interface is deprecated.** Use the com.android.build.api.variant package |

*** ** * ** ***

Model for test components that contains build-time properties.

These components are attached to a main component ([Variant](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Variant)), and accessed via them.  

```gdscript
androidComponents {
  onVariants(selector().all()) { variant: ApplicationVariant ->
    variant.androidTest?.apply {
      ....
    }
    variant.unitTest?.apply {
      ....
    }
  }
}
```

Not all subtype of [Variant](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Variant) will have access to all sub-types of [TestComponent](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/TestComponent), this is handled via [HasUnitTest](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/HasUnitTest), and [HasDeviceTests](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/HasDeviceTests).

The test components are also part of [Variant.nestedComponents](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Variant#nestedComponents())

## Summary

|                                                                                                                           ### Public properties                                                                                                                           |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [MapProperty](https://docs.gradle.org/current/javadoc/org/gradle/api/provider/MapProperty.html)`<`[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`, `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`>` | [manifestPlaceholders](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/TestComponent#manifestPlaceholders()) [MapProperty](https://docs.gradle.org/current/javadoc/org/gradle/api/provider/MapProperty.html) of the test component's manifest placeholders. |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        ### Inherited functions                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------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| From [com.android.build.api.variant.Component](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component) |------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)                     | `@`[Incubating](https://docs.gradle.org/current/javadoc/org/gradle/api/Incubating.html) [computeTaskName](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#computeTaskName(kotlin.String,kotlin.String))`(action: `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`, subject: `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`)` Utility method to create unique task name for component.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | | [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html) | `@`[Incubating](https://docs.gradle.org/current/javadoc/org/gradle/api/Incubating.html) [getResolvableConfiguration](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#getResolvableConfiguration(kotlin.String))`(sourceSetConfigurationsAffix: `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`)` Access to the component's resolvable configuration corresponding to the source set configurations added via [AndroidComponentsExtension.addSourceSetConfigurations](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/AndroidComponentsExtension#addSourceSetConfigurations(kotlin.String)).                                                                                                                                                                                                                                                                                                                                                                                    | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html)                         | ~~[setAsmFramesComputationMode](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#setAsmFramesComputationMode(com.android.build.api.instrumentation.FramesComputationMode))~~`(mode: `[FramesComputationMode](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/instrumentation/FramesComputationMode)`)` **This function is deprecated.** Will be removed in v9.0, use the instrumentation block.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html)                         | `<ParamT : `[InstrumentationParameters](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/instrumentation/InstrumentationParameters)`> `~~[transformClassesWith](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#transformClassesWith(java.lang.Class,com.android.build.api.instrumentation.InstrumentationScope,kotlin.Function1))~~`(` ` classVisitorFactoryImplClass: `[Class](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html)`<`[AsmClassVisitorFactory](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/instrumentation/AsmClassVisitorFactory)`<ParamT>>,` ` scope: `[InstrumentationScope](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/instrumentation/InstrumentationScope)`,` ` instrumentationParamsConfig: (ParamT) `->` `[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) `)` **This function is deprecated.** Will be removed in v9.0, use the instrumentation block. | |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 ### Inherited properties                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------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| From [com.android.build.api.variant.Component](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component) |---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html)                                                                            | [annotationProcessorConfiguration](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#annotationProcessorConfiguration()) Access to the variant's annotation processor [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html); for example, the debugAnnotationProcessor [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html) for the debug variant. | | [Artifacts](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/artifact/Artifacts)                                                              | [artifacts](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#artifacts()) Access to the variant's buildable artifacts for build customization.                                                                                                                                                                                                                                                                                                   | | [FileCollection](https://docs.gradle.org/current/javadoc/org/gradle/api/file/FileCollection.html)                                                                               | [compileClasspath](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#compileClasspath()) Access to the variant's compile classpath.                                                                                                                                                                                                                                                                                                               | | [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html)                                                                            | [compileConfiguration](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#compileConfiguration()) Access to the variant's compile [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html); for example, the debugCompileClasspath [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html) for the debug variant.                                         | | [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)                                                                                              | [debuggable](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#debuggable()) Whether the produced artifacts will be debuggable                                                                                                                                                                                                                                                                                                                    | | [Instrumentation](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Instrumentation)                                                   | [instrumentation](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#instrumentation()) Access to the variant's instrumentation options.                                                                                                                                                                                                                                                                                                           | | [JavaCompilation](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/JavaCompilation)                                                   | [javaCompilation](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#javaCompilation()) Access to the variant's java compilation options.                                                                                                                                                                                                                                                                                                          | | [LifecycleTasks](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/LifecycleTasks)                                                     | [lifecycleTasks](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#lifecycleTasks()) Provides access to the [LifecycleTasks](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/LifecycleTasks) created for this component.                                                                                                                                                                               | | [Provider](https://docs.gradle.org/current/javadoc/org/gradle/api/provider/Provider.html)`<`[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`>` | [namespace](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#namespace()) The namespace of the generated R and BuildConfig classes.                                                                                                                                                                                                                                                                                                              | | [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html)                                                                            | [runtimeConfiguration](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#runtimeConfiguration()) Access to the variant's runtime [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html); for example, the debugRuntimeClasspath [Configuration](https://docs.gradle.org/current/javadoc/org/gradle/api/artifacts/Configuration.html) for the debug variant.                                         | | [Sources](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Sources)                                                                   | [sources](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/Component#sources()) Access to variant's source files.                                                                                                                                                                                                                                                                                                                                          | |
| From [com.android.build.api.variant.ComponentIdentity](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/ComponentIdentity) |----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`?`                                                                                                                                                                                                                                                                | [buildType](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/ComponentIdentity#buildType()) Build type name.                        | | [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`?`                                                                                                                                                                                                                                                                | [flavorName](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/ComponentIdentity#flavorName()) The multi-flavor name of the variant. | | [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)                                                                                                                                                                                                                                                                   | [name](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/ComponentIdentity#name()) Component's name.                                 | | [List](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-list/index.html)`<`[Pair](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-pair/index.html)`<`[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`, `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`>>` | [productFlavors](https://developer.android.com/reference/tools/gradle-api/8.9/com/android/build/api/variant/ComponentIdentity#productFlavors()) List of flavor names.         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      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## Public properties

### manifestPlaceholders

Added in 7.4.1  

```
val manifestPlaceholders: MapProperty<String, String>
```

[MapProperty](https://docs.gradle.org/current/javadoc/org/gradle/api/provider/MapProperty.html) of the test component's manifest placeholders.

Placeholders are organized with a key and a value. The value is a [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) that will be used as is in the merged manifest.  

|                                                                                                                                  Returns                                                                                                                                  |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [MapProperty](https://docs.gradle.org/current/javadoc/org/gradle/api/provider/MapProperty.html)`<`[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`, `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`>` | the [MapProperty](https://docs.gradle.org/current/javadoc/org/gradle/api/provider/MapProperty.html) with keys as [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) |