Add Codecov integration with Travis CI

Generate code coverage for instrumentation tests
Update Jacoco to 0.7.6.201602180812

.travis.yml

@@ -14,6 +14,9 @@ android:
     - extra-android-support
     - sys-img-armeabi-v7a-android-18
 
+before_install:
+  - pip install --user codecov
+
 before_script:
   - echo no | android create avd --force -n test -t android-18 --abi armeabi-v7a
   - emulator -avd test -no-skin -no-audio -no-window &
@@ -22,6 +25,9 @@ before_script:
 
 script:
   - sh ci.sh
+
+after_success:
+  - codecov
 
 notifications:
   email: true

README.md

@@ -9,7 +9,7 @@ What does it have:
 * Integration tests to see that Http, REST, JSON parsing and RxJava work well in composition.
 * Functional (UI) tests (Espresso with custom rules, mocked server and Screen-architecture) to check that app works according to the expectations from the user's point of view.
 * Static code analysis (FindBugs, PMD, Android Lint, Checkstyle) (see root `build.gradle`).
-* Code coverage (currently in process of fighting with jacoco-coverage plugin to fail the build if coverage is not big enough).
+* Code coverage [![codecov.io](https://codecov.io/github/artem-zinnatullin/qualitymatters/coverage.svg?branch=master)](https://codecov.io/github/artem-zinnatullin/qualitymatters?branch=master)
 * Developer Settings Menu where you can enable/disable [Stetho](http://facebook.github.io/stetho/), [LeakCanary](https://github.com/square/leakcanary), etc. See full list below (feel free to add more tools!).
 * Git sha & build time without breaking incremental compilation! (Thanks to [Paperwork](https://github.com/zsoltk/paperwork))
 * MVP, RxJava, Dagger 2, Retrofit 2 and so on.

app/build.gradle

@@ -45,13 +45,20 @@ android {
         debug {
             signingConfig signingConfigs.qualityMatters
             applicationIdSuffix '.debug'
+
+            // Enables code coverage with Jacoco only for instrumentation tests.
+            // Coverage for JVM tests done by code_quality_tools/jacoco.gradle.
+            testCoverageEnabled true
         }
 
         release {
             signingConfig signingConfigs.qualityMatters
-
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt')
+
+            // Enables code coverage with Jacoco only for instrumentation tests.
+            // Coverage for JVM tests done by code_quality_tools/jacoco.gradle.
+            testCoverageEnabled true
         }
     }
 

build.gradle

@@ -24,6 +24,9 @@ buildscript {
         // Generates build info without breaking incremental builds
         classpath libraries.paperworkPlugin
 
+        // Code coverage.
+        classpath 'org.jacoco:org.jacoco.core:0.7.6.201602180812'
+
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }

code_quality_tools/jacoco.gradle

@@ -2,13 +2,11 @@
 // https://github.com/mgouline/android-samples/blob/master/jacoco/app/build.gradle
 // and https://github.com/pushtorefresh/storio/blob/master/gradle/jacoco-android.gradle
 
+// Requires Jacoco plugin in build classpath.
 apply plugin: 'jacoco'
 
-jacoco {
-    // See https://github.com/jacoco/jacoco/releases
-    toolVersion = '0.7.5.201505241946'
-}
-
+// Enables code coverage for JVM tests.
+// Android Gradle Plugin out of the box supports only code coverage for instrumentation tests.
 project.afterEvaluate {
     // Grab all build types and product flavors
     def buildTypes = android.buildTypes.collect { type -> type.name }
@@ -54,6 +52,7 @@ project.afterEvaluate {
                         "src/$productFlavorName/java",
                         "src/$buildTypeName/java"
                 ]
+
                 additionalSourceDirs = files(coverageSourceDirs)
                 sourceDirectories = files(coverageSourceDirs)
                 executionData = files("${project.buildDir}/jacoco/${testTaskName}.exec")