Compute code coverage during Travis CI build

The new jacoco Maven profile allows to compute code's coverage
thanks to JaCoCo. It can be used as follows:

 * mvn verify -P jacoco

All reports are aggregated by the org.pitest.pitclipse.tests.coverage.report
module and then sent to CodeCov.

.codecov.yml

@@ -0,0 +1,6 @@
+coverage:
+  status:
+    patch: off
+ignore:
+  - "**/*Exception.java"
+  - "**/Activator.java"

.travis.yml

@@ -19,7 +19,10 @@ before_script:
   # Prevent installed packages from being used during build
   - rm -rfv "$HOME/.m2/repository/org/pitest/"
 
-script: mvn verify
+script: mvn verify -P jacoco
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
 
 # Keep p2 information
 cache:

tests/org.pitest.pitclipse.tests.coverage.report/pom.xml

@@ -0,0 +1,68 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>org.pitest</groupId>
+		<artifactId>org.pitest.pitclipse.tests</artifactId>
+		<version>2.0.0-SNAPSHOT</version>
+	</parent>
+
+    <artifactId>org.pitest.pitclipse.tests.coverage.report</artifactId>
+	<packaging>pom</packaging>
+
+	<description>Aggregates Jacoco's code coverage reports, easing their use in CI tools</description>
+
+	<profiles>
+        <profile>
+            <id>jacoco</id>
+            <activation>
+                <activeByDefault>false</activeByDefault>
+            </activation>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.jacoco</groupId>
+                        <artifactId>jacoco-maven-plugin</artifactId>
+                        <version>${jacoco-version}</version>
+                        <executions>
+                            <execution>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>report-aggregate</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.pitest</groupId>
+			<artifactId>org.pitest.pitclipse.runner</artifactId>
+			<version>2.0.0-SNAPSHOT</version>
+			<scope>compile</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.pitest</groupId>
+			<artifactId>org.pitest.pitclipse.runner.tests</artifactId>
+			<version>2.0.0-SNAPSHOT</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.pitest</groupId>
+			<artifactId>org.pitest.pitclipse.ui</artifactId>
+			<version>2.0.0-SNAPSHOT</version>
+			<scope>compile</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.pitest</groupId>
+			<artifactId>org.pitest.pitclipse.ui.tests</artifactId>
+			<version>2.0.0-SNAPSHOT</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+</project>

tests/pom.xml

@@ -25,6 +25,9 @@
 
         <!-- Test dependencies -->
         <module>io.cucumber</module>
+
+        <!-- Global utilities -->
+        <module>org.pitest.pitclipse.tests.coverage.report</module>
 	</modules>
 
     <build>
@@ -40,4 +43,39 @@
             </plugin>
         </plugins>
     </build>
+
+	<profiles>
+        <!-- mvn -Pjacoco to activate code coverage -->
+        <profile>
+            <id>jacoco</id>
+            <activation>
+                <activeByDefault>false</activeByDefault>
+            </activation>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.jacoco</groupId>
+                        <artifactId>jacoco-maven-plugin</artifactId>
+                        <version>${jacoco-version}</version>
+                        <configuration>
+                            <excludes>
+                                <!-- Ignore Exceptions -->
+                                <exclude>**/*Exception.class</exclude>
+
+                                <!-- Ignore untestable Activators -->
+                                <exclude>**/Activator.class</exclude>
+                            </excludes>
+                        </configuration>
+                        <executions>
+                            <execution>
+                                <goals>
+                                    <goal>prepare-agent</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+	</profiles>
 </project>