Enable test fixtures and migrate datastore test setup

app/build.gradle.kts

@@ -111,10 +111,10 @@ dependencies {
     kspTest(libs.hilt.compiler)
 
     testImplementation(projects.core.dataTest)
-    testImplementation(projects.core.datastoreTest)
     testImplementation(libs.hilt.android.testing)
     testImplementation(projects.sync.syncTest)
     testImplementation(libs.kotlin.test)
+    testImplementation(testFixtures(projects.core.datastore))
 
     testDemoImplementation(libs.androidx.navigation.testing)
     testDemoImplementation(libs.robolectric)
@@ -124,11 +124,11 @@ dependencies {
 
     androidTestImplementation(projects.core.testing)
     androidTestImplementation(projects.core.dataTest)
-    androidTestImplementation(projects.core.datastoreTest)
     androidTestImplementation(libs.androidx.test.espresso.core)
     androidTestImplementation(libs.androidx.compose.ui.test)
     androidTestImplementation(libs.hilt.android.testing)
     androidTestImplementation(libs.kotlin.test)
+    androidTestImplementation(testFixtures(projects.core.datastore))
 
     baselineProfile(projects.benchmarks)
 }

core/data/build.gradle.kts

@@ -40,6 +40,6 @@ dependencies {
 
     testImplementation(libs.kotlinx.coroutines.test)
     testImplementation(libs.kotlinx.serialization.json)
-    testImplementation(projects.core.datastoreTest)
+    testImplementation(testFixtures(projects.core.datastore))
     testImplementation(projects.core.testing)
 }

core/datastore-test/.gitignore

@@ -1 +0,0 @@
-/build

core/datastore-test/README.md

@@ -1,3 +0,0 @@
-# :core:datastore-test module
-## Dependency graph
-![Dependency graph](../../docs/images/graphs/dep_graph_core_datastore_test.svg)

core/datastore-test/build.gradle.kts

@@ -1,29 +0,0 @@
-/*
- * Copyright 2022 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-plugins {
-    alias(libs.plugins.nowinandroid.android.library)
-    alias(libs.plugins.nowinandroid.hilt)
-}
-
-android {
-    namespace = "com.google.samples.apps.nowinandroid.core.datastore.test"
-}
-
-dependencies {
-    implementation(libs.hilt.android.testing)
-    implementation(projects.core.common)
-    implementation(projects.core.datastore)
-}

core/datastore-test/src/main/AndroidManifest.xml

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-     Copyright 2022 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<manifest />

core/datastore/build.gradle.kts

@@ -25,6 +25,9 @@ android {
         consumerProguardFiles("consumer-proguard-rules.pro")
     }
     namespace = "com.google.samples.apps.nowinandroid.core.datastore"
+
+    @Suppress("UnstableApiUsage")
+    testFixtures.enable = true
 }
 
 dependencies {
@@ -34,6 +37,7 @@ dependencies {
 
     implementation(projects.core.common)
 
-    testImplementation(projects.core.datastoreTest)
     testImplementation(libs.kotlinx.coroutines.test)
+
+    testFixturesImplementation(libs.hilt.android.testing)
 }

gradle.properties

@@ -63,3 +63,8 @@ roborazzi.test.verify=true
 # Prevent uninstall app after instrumented tests
 # https://issuetracker.google.com/issues/295039976
 android.injected.androidTest.leaveApksInstalledAfterRun=true
+
+# Test fixture introduction
+# https://medium.com/@emartynov/android-project-test-fixtures-dec50c5d8533
+# TODO: Add real documentation
+android.experimental.enableTestFixturesKotlinSupport=true

settings.gradle.kts

@@ -55,7 +55,6 @@ include(":core:data-test")
 include(":core:database")
 include(":core:datastore")
 include(":core:datastore-proto")
-include(":core:datastore-test")
 include(":core:designsystem")
 include(":core:domain")
 include(":core:model")