[Gradle] Remove unit test resources from main library source set and refactor the way test resources are configured/accessed

Resolves #1709

PiperOrigin-RevId: 449026115

Author: dsn5ft

lib/build.gradle

@@ -97,6 +97,7 @@ android {
     srcDirs.forEach {
       main.res.srcDirs += 'java/' + it + '/res'
       main.res.srcDirs += 'java/' + it + '/res-public'
+      test.res.srcDirs += 'javatests/' + it + '/res'
     }
 
     test.java.srcDir 'javatests'
@@ -113,15 +114,6 @@ android {
   }
 }
 
-// Add the resource directories to the main sourceSet for all test tasks
-gradle.projectsEvaluated {
-  tasks.withType(Test) { task ->
-    srcDirs.forEach {
-      android.sourceSets.main.res.srcDirs += 'javatests/' + it + '/res'
-    }
-  }
-}
-
 task generateJavadocs(type: Javadoc) {
   if (project.hasProperty("online")) {
     options.addStringOption("toroot", "/")

lib/javatests/com/google/android/material/appbar/MaterialToolbarTest.java

@@ -15,7 +15,7 @@
  */
 package com.google.android.material.appbar;
 
-import com.google.android.material.R;
+import com.google.android.material.test.R;
 
 import static com.google.common.truth.Truth.assertThat;
 

lib/javatests/com/google/android/material/badge/BadgeDrawableTest.java

@@ -15,7 +15,7 @@
  */
 package com.google.android.material.badge;
 
-import com.google.android.material.R;
+import com.google.android.material.test.R;
 
 import static com.google.common.truth.Truth.assertThat;
 

lib/javatests/com/google/android/material/badge/BadgeUtilsTest.java

@@ -15,7 +15,7 @@
  */
 package com.google.android.material.badge;
 
-import com.google.android.material.R;
+import com.google.android.material.test.R;
 
 import static com.google.common.truth.Truth.assertThat;
 

lib/javatests/com/google/android/material/bottomnavigation/BottomNavigationViewTest.java

@@ -15,7 +15,7 @@
  */
 package com.google.android.material.bottomnavigation;
 
-import com.google.android.material.R;
+import com.google.android.material.test.R;
 
 import static com.google.common.truth.Truth.assertThat;
 

lib/javatests/com/google/android/material/bottomsheet/BottomSheetBehaviorTest.java

@@ -15,7 +15,7 @@
  */
 package com.google.android.material.bottomsheet;
 
-import com.google.android.material.R;
+import com.google.android.material.test.R;
 
 import static com.google.common.truth.Truth.assertThat;
 

lib/javatests/com/google/android/material/button/MaterialButtonTest.java

@@ -15,7 +15,7 @@
  */
 package com.google.android.material.button;
 
-import com.google.android.material.R;
+import com.google.android.material.test.R;
 
 import static com.google.common.truth.Truth.assertThat;
 

lib/javatests/com/google/android/material/button/MaterialButtonToggleGroupTest.java

@@ -16,7 +16,7 @@
 
 package com.google.android.material.button;
 
-import com.google.android.material.R;
+import com.google.android.material.test.R;
 
 import static android.view.View.GONE;
 import static androidx.test.platform.app.InstrumentationRegistry.getInstrumentation;

lib/javatests/com/google/android/material/checkbox/MaterialCheckBoxTest.java

@@ -16,7 +16,7 @@
 
 package com.google.android.material.checkbox;
 
-import com.google.android.material.R;
+import com.google.android.material.test.R;
 
 import static com.google.common.truth.Truth.assertThat;
 

lib/javatests/com/google/android/material/chip/ChipGroupTest.java

@@ -15,7 +15,7 @@
  */
 package com.google.android.material.chip;
 
-import com.google.android.material.R;
+import com.google.android.material.test.R;
 
 import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.assertEquals;