Retry: Specify test dependecies in rules.gradle

Now that tests are using Robolectric 3, it should not break the internal
build.

This also updates the android gradle plugin. The block is wrapped in an
if statement, in case someone using plugin version 1.0 includes
rules.gradle.

Change-Id: Ib054e2d39cf1e3bc0746740659f4e5449b2e1375

2 files changed, 14 insertions, 1 deletions

diff --git a/build.gradle b/build.gradle
index 83acd6d..9f973c1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -19,12 +19,16 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.2.3'
+        classpath 'com.android.tools.build:gradle:1.3.1'
     }
 }
 
 apply plugin: 'com.android.library'
 
+repositories {
+    jcenter()
+}
+
 android {
     compileSdkVersion 22
     buildToolsVersion = '22.0.1'
diff --git a/rules.gradle b/rules.gradle
index 40508d0..04dd681 100644
--- a/rules.gradle
+++ b/rules.gradle
@@ -1,3 +1,12 @@
 // See build.gradle for an explanation of what this file is.
 
 apply plugin: 'com.android.library'
+
+// Check if the android plugin version supports unit testing.
+if (configurations.findByName("testCompile")) {
+  dependencies {
+    testCompile "junit:junit:4.10"
+    testCompile "org.mockito:mockito-core:1.9.5"
+    testCompile "org.robolectric:robolectric:3.0"
+  }
+}