Add support for test sharding (#272)

* Add a common testutil module for shared helpers

* Introduce ShardingFilter and mirror support for 'numShards' and 'shardIndex'

Author: mannodermaus

build-logic/src/main/kotlin/Dependencies.kt

@@ -43,6 +43,7 @@ object libs {
     const val mockitoKotlin = "com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0"
     const val truth = "com.google.truth:truth:${versions.truth}"
     const val truthJava8Extensions = "com.google.truth.extensions:truth-java8-extension:${versions.truth}"
+    const val robolectric = "org.robolectric:robolectric:4.8.1"
 
     const val androidXTestCore = "androidx.test:core:${versions.androidXTest}"
     const val androidXTestRunner = "androidx.test:runner:${versions.androidXTest}"

instrumentation/CHANGELOG.md

@@ -3,6 +3,7 @@ Change Log
 
 ## Unreleased
 - Update formatting of instrumentation test names to prevent breaking generation of log files in newer versions of AGP (#263)
+- Add support for test sharding (#270)
 
 ## 1.3.0 (2021-09-17)
 

instrumentation/core/build.gradle.kts

@@ -108,11 +108,7 @@ dependencies {
   androidTestRuntimeOnly(project(":runner"))
   androidTestRuntimeOnly(libs.junitJupiterEngine)
 
-  testImplementation(libs.junitJupiterApi)
-  testImplementation(libs.mockitoCore)
-  testImplementation(libs.mockitoKotlin)
-  testImplementation(libs.truth)
-  testImplementation(libs.truthJava8Extensions)
+  testImplementation(project(":testutil"))
 }
 
 project.configureDeployment(Artifacts.Instrumentation.Core)

instrumentation/core/src/test/java/de/mannodermaus/junit5/condition/DisabledIfBuildConfigValueConditionTests.kt

@@ -2,7 +2,7 @@ package de.mannodermaus.junit5.condition
 
 import com.google.common.truth.Truth.assertThat
 import de.mannodermaus.junit5.internal.DisabledIfBuildConfigValueCondition
-import de.mannodermaus.junit5.util.AndroidBuildUtils.withMockedInstrumentation
+import de.mannodermaus.junit5.testutil.AndroidBuildUtils.withMockedInstrumentation
 import de.mannodermaus.junit5.util.RESOURCE_LOCK_INSTRUMENTATION
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertThrows

instrumentation/core/src/test/java/de/mannodermaus/junit5/condition/DisabledOnManufacturerConditionTests.kt

@@ -2,7 +2,7 @@ package de.mannodermaus.junit5.condition
 
 import com.google.common.truth.Truth.assertThat
 import de.mannodermaus.junit5.internal.DisabledOnManufacturerCondition
-import de.mannodermaus.junit5.util.AndroidBuildUtils.withManufacturer
+import de.mannodermaus.junit5.testutil.AndroidBuildUtils.withManufacturer
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertThrows
 import org.junit.jupiter.api.extension.ExecutionCondition

instrumentation/core/src/test/java/de/mannodermaus/junit5/condition/DisabledOnSdkVersionConditionTests.kt

@@ -2,7 +2,7 @@ package de.mannodermaus.junit5.condition
 
 import com.google.common.truth.Truth.assertThat
 import de.mannodermaus.junit5.internal.DisabledOnSdkVersionCondition
-import de.mannodermaus.junit5.util.AndroidBuildUtils.withApiLevel
+import de.mannodermaus.junit5.testutil.AndroidBuildUtils.withApiLevel
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertThrows
 import org.junit.jupiter.api.extension.ExecutionCondition

instrumentation/core/src/test/java/de/mannodermaus/junit5/condition/EnabledIfBuildConfigValueConditionTests.kt

@@ -2,7 +2,7 @@ package de.mannodermaus.junit5.condition
 
 import com.google.common.truth.Truth.assertThat
 import de.mannodermaus.junit5.internal.EnabledIfBuildConfigValueCondition
-import de.mannodermaus.junit5.util.AndroidBuildUtils.withMockedInstrumentation
+import de.mannodermaus.junit5.testutil.AndroidBuildUtils.withMockedInstrumentation
 import de.mannodermaus.junit5.util.RESOURCE_LOCK_INSTRUMENTATION
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertThrows

instrumentation/core/src/test/java/de/mannodermaus/junit5/condition/EnabledOnManufacturerConditionTests.kt

@@ -2,7 +2,7 @@ package de.mannodermaus.junit5.condition
 
 import com.google.common.truth.Truth.assertThat
 import de.mannodermaus.junit5.internal.EnabledOnManufacturerCondition
-import de.mannodermaus.junit5.util.AndroidBuildUtils.withManufacturer
+import de.mannodermaus.junit5.testutil.AndroidBuildUtils.withManufacturer
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertThrows
 import org.junit.jupiter.api.extension.ExecutionCondition

instrumentation/core/src/test/java/de/mannodermaus/junit5/condition/EnabledOnSdkVersionConditionTests.kt

@@ -2,7 +2,7 @@ package de.mannodermaus.junit5.condition
 
 import com.google.common.truth.Truth.assertThat
 import de.mannodermaus.junit5.internal.EnabledOnSdkVersionCondition
-import de.mannodermaus.junit5.util.AndroidBuildUtils.withApiLevel
+import de.mannodermaus.junit5.testutil.AndroidBuildUtils.withApiLevel
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertThrows
 import org.junit.jupiter.api.extension.ExecutionCondition