Rollback #2785, which made bom generation and crashlytics smoke test fail.

smoke-tests/build.gradle

@@ -13,17 +13,18 @@
 // limitations under the License.
 
 import java.nio.file.Files
+import java.nio.file.Path
 import java.nio.file.Paths
 
 buildscript {
   repositories {
     google()
-    mavenCentral()
+    jcenter()
   }
 
   dependencies {
-    classpath "com.android.tools.build:gradle:4.2.2"
-    classpath "com.google.gms:google-services:4.3.8"
+    classpath "com.android.tools.build:gradle:3.4.3"
+    classpath "com.google.gms:google-services:4.3.0"
     classpath "com.google.firebase:firebase-crashlytics-gradle:2.7.0"
   }
 }
@@ -83,15 +84,15 @@ dependencies {
   implementation "com.google.firebase:firebase-storage"
 
   // Common utilities (application side)
-  implementation "androidx.test:rules:1.4.0"
-  implementation "androidx.test:runner:1.4.0"
-  implementation "com.google.truth:truth:1.0.1"
-  implementation "junit:junit:4.13.2"
-  implementation "androidx.test:core:1.4.0"
+  implementation "androidx.test:rules:1.2.0"
+  implementation "androidx.test:runner:1.2.0"
+  implementation "com.google.truth:truth:0.44"
+  implementation "junit:junit:4.12"
+  implementation "androidx.test:core:1.3.0"
 
   // Common utilities (instrumentation side)
-  androidTestImplementation "androidx.test:runner:1.4.0"
-  androidTestImplementation "junit:junit:4.13.2"
+  androidTestImplementation "androidx.test:runner:1.2.0"
+  androidTestImplementation "junit:junit:4.12"
 }
 
 clean.doLast {

smoke-tests/configure.gradle

@@ -14,13 +14,20 @@
 
 
 def configurePlatform() {
-  def bom = "com.google.firebase:firebase-bom:28.2.0"
+  def bom = "com.google.firebase:firebase-bom:20.0.0"
   if (project.hasProperty("firebase-bom")) {
     bom = project.getProperty("firebase-bom")
   }
 
-  def platform = project.dependencies.platform(bom)
-  project.dependencies.add("implementation", platform)
+  def version = project.gradle.gradleVersion
+  if (version.startsWith("4.")) {
+    project.dependencies.add("implementation", bom)
+  } else {
+    def platform = project.dependencies.platform(bom)
+    project.dependencies.add("implementation", platform)
+    logger.warn("Congrats on switching to Gradle 5.y!")
+    logger.warn("Perhaps remove the Gradle 4.x compat layer?")
+  }
 }
 
 def configureRepositories() {
@@ -37,7 +44,7 @@ def configureRepositories() {
     }
 
     google()
-    mavenCentral()
+    jcenter()
   }
 }
 

smoke-tests/gradle.properties

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+android.enableR8=true
 android.useAndroidX=true
 
 org.gradle.jvmargs=-Xmx4g -XX:MaxPermSize=4g

smoke-tests/settings.gradle

@@ -12,4 +12,4 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-rootProject.name = 'smoke-tests'
+enableFeaturePreview("IMPROVED_POM_SUPPORT")