SonarQube does not display detailed report per file for fully covered classes via Gradle

Question

I am running a Gradle build inside the IntelliJ Java IDE. The SonarQube runner Gradle plugin is used along with the JaCoCo Gradle plugin.

Problem: I am getting the message No information about coverage per test., (not a duplicate of this post, see below) and the coverage appears in SonarQube, but only as an overall percentage, not a detailed report per file:

Am I doing something wrong? Is it a bug in SonarQube maybe (as it was with Cobertura recently)?

Here is my build.gradle:

repositories {
    mavenCentral()
}

apply plugin: 'java'
apply plugin: 'jacoco'
apply plugin: 'sonar-runner'

sourceCompatibility = 1.7
project.version = '1.0'
project.group = 'com.acme.sandbox'
project.description = 'just a test project'

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.11'
}

// JaCoCo test coverage configuration
tasks.withType(Test) { task ->
    jacoco {
        append = false
    }
}

// Sonar configuration
sonarRunner {
  sonarProperties {
    property 'sonar.host.url', 'http://host:port'
    property 'sonar.jdbc.url', 'myJdbcURL'
    property 'sonar.jdbc.username', 'dbuser'
    property 'sonar.jdbc.password', 'dbpass'
    property 'sonar.login', 'builduser'
    property 'sonar.password', 'buildpass'

    property 'sonar.profile', 'profilename'
    property 'sonar.branch', 'DEV'
    property 'sonar.language', 'java'
    property 'sonar.sourceEncoding', 'UTF-8'
    property 'sonar.verbose', 'true'
    //property 'sonar.tests', "$projectDir\\src\\test\\java"
    //property 'sonar.binaries', "${buildDir}\\classes\\main,${buildDir}\\classes\\test"

    //property 'sonar.java.coveragePlugin', 'jacoco'
    property 'sonar.jacoco.reportPath', "${buildDir}\\jacoco\\test.exec"
    property 'sonar.junit.reportsPath', "${buildDir}\\test-results"
  }
}

Now if you execute a clean, followed by sonarRunner, a JaCoCo test.exec file gets created and processed:

<snip>
18:35:27.705 DEBUG - Initializers : 
18:35:27.706 INFO  - Base dir: D:\path\to\JaCoCoTest
18:35:27.706 INFO  - Working dir: D:\path\to\JaCoCoTest\build\sonar
18:35:27.707 INFO  - Source dirs: D:\path\to\JaCoCoTest\src\main\java
18:35:27.708 INFO  - Test dirs: D:\path\to\JaCoCoTest\src\test\java
18:35:27.708 INFO  - Binary dirs: D:\path\to\JaCoCoTest\build\classes\main
<snip>
18:35:27.931 INFO  - JaCoCo IT report not found.
18:35:27.933 INFO  - JaCoCo reports not found.
18:35:27.938 DEBUG - Sensors : JavaSquidSensor -> QProfileSensor -> FindbugsSensor -> CpdSensor -> PmdSensor -> SurefireSensor -> CheckstyleSensor -> InitialOpenIssuesSensor -> ProfileEventsSensor -> ProjectLinksSensor -> VersionEventsSensor -> FileHashSensor -> JaCoCoSensor
<snip>
18:35:34.055 INFO  - Sensor SurefireSensor...
18:35:34.056 INFO  - parsing D:\path\to\JaCoCoTest\build\test-results
18:35:34.116 INFO  - Sensor SurefireSensor done: 61 ms
<snip>
18:35:34.936 INFO  - Sensor JaCoCoSensor...
18:35:34.939 INFO  - Analysing D:\path\to\JaCoCoTest\build\jacoco\test.exec
18:35:35.027 INFO  - No information about coverage per test.
18:35:35.028 INFO  - Sensor JaCoCoSensor done: 92 ms

This post suggests to set sonar.tests, which I've tried to no effect. The log file shows that test sources and binaries are detected to be at the correct locations.

FWIW, I used the same settings with a Maven build and it worked. Can't use Maven here though.

Version numbers:

• SonarQube 4.3
• SonarQube Java Ecosystem 2.2.1
• Gradle 1.12 (also: 1.11)
• IntelliJ IDEA Ultimate 13.1.3
• Java 1.7

Here is the full test project for download, and also the full log.

Answer 1

This is what is called 'wanted' behaviour. Sonar does not display classes with 100% coverage. In your project you have one class fully covered by tests, so nothing to show.

FYI:

Even if you have 100% covered class, you can look at this class coverage by searching in sonars search box (top-right corner).

---

If you see .exec and it is of valuable size, then you already collected coverage data.

See my FAQ

I got this code analysis widget for your project:

And finally after I added another method uncovered by tests and test coverage dropped to 80%:

I got what you need - coverage by line:

By the way, your modified build.gradle for my sonar (this // does not work for me):

repositories {
    mavenCentral()
}

apply plugin: 'java'
apply plugin: 'jacoco'
apply plugin: 'sonar-runner'


sourceCompatibility = 1.7
project.version = '1.0'
project.group = 'com.acme.sandbox'
project.description = 'just a test project'

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.11'
}

// JaCoCo test coverage configuration
tasks.withType(Test) { task ->
    jacoco {
        append = false
    }
}

// Sonar configuration
sonarRunner {
    sonarProperties {
        // general information about the SonarQube server
        property 'sonar.host.url', 'http://localhost:9000'
        property 'sonar.jdbc.url', 'jdbc:h2:tcp://localhost:9092/sonar'
        property 'sonar.jdbc.validationQuery', 'select 1'
        property 'sonar.jdbc.driverClassName', 'org.hibernate.dialect.H2Dialect'
        property 'sonar.jdbc.password', 'sonar'
        property 'sonar.jdbc.password', 'sonar'
        property 'sonar.login', 'jenkins'
        property 'sonar.password', 'jenkins'

        // information about this project
        //property 'sonar.profile', 'profilename'
        property 'sonar.branch', 'DEV'
        property 'sonar.language', 'java'
        property 'sonar.sourceEncoding', 'UTF-8'
        property 'sonar.verbose', 'true'
        //property 'sonar.tests', "$projectDir\\src\\test\\java"
        property 'sonar.binaries', "${buildDir}/classes/main/"

        // execute JaCoCo before the SonarQube run to have report file ready
        //property 'sonar.java.coveragePlugin', 'jacoco'
        property 'sonar.jacoco.reportPath', "${buildDir}/jacoco/test.exec"
        property 'sonar.junit.reportsPath', "${buildDir}/test-results"
    }
}