Debugging - pford68/gradle-examples GitHub Wiki

Remote Debugging
Debugging Tests

Enabling Remote Debugging

Set the org.gradle.debug Gradle property to true.

org.gradle.debug=true

gradle -Dorg.gradle.debug=true build

When set to true, Gradle will run the build with remote debugging enabled, listening on port 5005.
Note that this is the equivalent of adding the following to the JVM command line:
```
-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=5005
```
It will suspend the virtual machine until a debugger is attached.

Debugging Tests

To show more information about the failed tests, we can run the tests with the --info flag, but this will also produce a lot of noise. Instead you can we can configure the test task logging by setting the exceptionFormat property to full:

// File: build.gradle
apply plugin: 'java'
 
repositories {
    mavenCentral()
}
 
dependencies {
    testCompile 'junit:junit:[4,)'
}
 
test {
    testLogging {
        exceptionFormat = 'full'
    }
}

When we re-run the test task and use the normal logging level, we also get the reason why our test fails, without the extra noise from --info:

$ gradle test
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:compileTestJava UP-TO-DATE
:processTestResources UP-TO-DATE
:testClasses UP-TO-DATE
:test
 
com.mrhaki.gradle.SampleTest > sample FAILED
    org.junit.ComparisonFailure: expected:<gradle is gr[8]> but was:<gradle is gr[eat]>
        at org.junit.Assert.assertEquals(Assert.java:115)
        at org.junit.Assert.assertEquals(Assert.java:144)
        at com.mrhaki.gradle.SampleTest.sample(SampleTest.java:8)
 
1 test completed, 1 failed
:test FAILED
 
FAILURE: Build failed with an exception.
 
* What went wrong:
Execution failed for task ':test'.
> There were failing tests. See the report at: file:///Users/mrhaki/Projects/mrhaki.com/blog/posts/samples/gradle/testlogging/build/reports/tests/index.html
 
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
 
BUILD FAILED
 
Total time: 5.906 secs

Debugging - pford68/gradle-examples GitHub Wiki

Contents

Enabling Remote Debugging

Debugging Tests

References