refactor(build): simplify test dependency setup

android/build.gradle.kts

@@ -6,6 +6,8 @@
  */
 @file:Suppress("UnstableApiUsage")
 
+import dev.msfjarvis.claw.gradle.addTestDependencies
+
 plugins {
   id("dev.msfjarvis.claw.android-application")
   id("dev.msfjarvis.claw.rename-artifacts")
@@ -74,14 +76,7 @@ dependencies {
 
   kapt(libs.dagger.compiler)
 
-  testImplementation(libs.junit.jupiter.api)
   testImplementation(libs.kotlinx.coroutines.test)
   testImplementation(libs.okhttp.mockwebserver)
-  testImplementation(libs.truth) { exclude(group = "junit", module = "junit") }
+  addTestDependencies(project)
-
-  testRuntimeOnly(libs.junit.jupiter.engine)
-  testRuntimeOnly(libs.junit.legacy) {
-    // See https://github.com/google/truth/issues/333
-    because("Truth needs it")
-  }
 }

api/build.gradle.kts

@@ -4,6 +4,8 @@
  * license that can be found in the LICENSE file or at
  * https://opensource.org/licenses/MIT.
  */
+import dev.msfjarvis.claw.gradle.addTestDependencies
+
 plugins {
   id("dev.msfjarvis.claw.android-library")
   id("dev.msfjarvis.claw.kotlin-android")
@@ -24,15 +26,8 @@ dependencies {
   implementation(libs.javax.inject)
 
   testImplementation(testFixtures(libs.eithernet))
-  testImplementation(libs.junit.jupiter.api)
   testImplementation(libs.kotlinx.coroutines.test)
   testImplementation(libs.kotlinx.serialization.json)
   testImplementation(libs.retrofit.kotlinxSerializationConverter)
-  testImplementation(libs.truth) { exclude(group = "junit", module = "junit") }
+  addTestDependencies(project)
-
-  testRuntimeOnly(libs.junit.jupiter.engine)
-  testRuntimeOnly(libs.junit.legacy) {
-    // See https://github.com/google/truth/issues/333
-    because("Truth needs it")
-  }
 }

build-logic/src/main/kotlin/dev/msfjarvis/claw/gradle/deps.ext.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright © 2023 Harsh Shandilya.
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+package dev.msfjarvis.claw.gradle
+
+import org.gradle.api.Project
+import org.gradle.api.artifacts.ExternalModuleDependency
+import org.gradle.api.artifacts.MinimalExternalModuleDependency
+import org.gradle.api.artifacts.VersionCatalogsExtension
+import org.gradle.kotlin.dsl.DependencyHandlerScope
+import org.gradle.kotlin.dsl.exclude
+import org.gradle.kotlin.dsl.getByType
+
+/** Extension function to configure JUnit5 dependencies with the Truth assertion library. */
+fun DependencyHandlerScope.addTestDependencies(project: Project) {
+  val catalog = project.extensions.getByType<VersionCatalogsExtension>()
+  val libs = catalog.named("libs")
+  addProvider("testImplementation", libs.findLibrary("junit-jupiter-api").get())
+  addProvider<MinimalExternalModuleDependency, ExternalModuleDependency>(
+    "testImplementation",
+    libs.findLibrary("truth").get(),
+  ) {
+    exclude(group = "junit", module = "junit")
+  }
+  addProvider("testRuntimeOnly", libs.findLibrary("junit-jupiter-engine").get())
+  addProvider<MinimalExternalModuleDependency, ExternalModuleDependency>(
+    "testRuntimeOnly",
+    libs.findLibrary("junit-legacy").get(),
+  ) {
+    // See https://github.com/google/truth/issues/333
+    because("Truth needs it")
+  }
+}

database/build.gradle.kts

@@ -4,6 +4,8 @@
  * license that can be found in the LICENSE file or at
  * https://opensource.org/licenses/MIT.
  */
+import dev.msfjarvis.claw.gradle.addTestDependencies
+
 plugins {
   id("dev.msfjarvis.claw.android-library")
   id("dev.msfjarvis.claw.kotlin-android")
@@ -33,14 +35,7 @@ dependencies {
   implementation(libs.sqldelight.primitiveAdapters)
   implementation(projects.core)
 
-  testImplementation(libs.junit.jupiter.api)
   testImplementation(libs.kotlinx.coroutines.core)
   testImplementation(libs.sqldelight.jvmDriver)
-  testImplementation(libs.truth) { exclude(group = "junit", module = "junit") }
+  addTestDependencies(project)
-
-  testRuntimeOnly(libs.junit.jupiter.engine)
-  testRuntimeOnly(libs.junit.legacy) {
-    // See https://github.com/google/truth/issues/333
-    because("Truth needs it")
-  }
 }