Fix ButtonItem theme in appcompat

Inflate the button from XML rather than calling the constructor
directly, so that AppCompatActivity can use the injected layout
inflater to tint the button drawables.

- Migrated existing ButtonItemTest to robolectric
- Added new ButtonItemDrawingTest as instrumentation test to test
  the drawing behavior. Created DrawingTestHelper and
  DrawingTestActivity to help in testing draw behaviors in normal and
  AppCompat contexts.

Bug: 35325693
Test: ./gradlew connectedAndroidTest
Change-Id: Ic2215f5510c246a861ab109e3dffee49f9cf9b3c

1 files changed, 4 insertions, 6 deletions

diff --git a/library/self.gradle b/library/self.gradle
index c744215..e481852 100644
--- a/library/self.gradle
+++ b/library/self.gradle
@@ -1,11 +1,8 @@
 /**
  * This self.gradle build file is only run when built in ub-setupwizard-* branches.
  */
-
 apply plugin: 'dist'
-
 apply from: 'standalone-rules.gradle'
-
 // Add targets for tests
 android.sourceSets {
     androidTest {
@@ -23,6 +20,10 @@ android.sourceSets {
         }
     }
 
+    androidTestPlatform {
+        java.srcDirs = ['platform/test/src']
+    }
+
     androidTestGingerbreadCompat {
         java.srcDirs = ['full-support/test/src', 'eclair-mr1/test/src']
         res.srcDirs = ['full-support/test/res']
@@ -42,7 +43,6 @@ android.sourceSets {
     }
 }
 android.defaultConfig.testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-
 android.lintOptions {
     abortOnError true
     htmlReport true
@@ -51,12 +51,10 @@ android.lintOptions {
     warningsAsErrors true
     xmlReport false
 }
-
 // Run lint for all variants
 android.libraryVariants.all { variant ->
     variant.assemble.dependsOn(tasks.findByName('lint'))
 }
-
 // Output all test APKs to the distribution folder
 def distTask = tasks.findByName('dist')
 if (distTask) {