Gradle: How to Display Test Results in the Console in Real Time?

Question

I would like to see test results ( system.out/err, log messages from components being tested ) as they run in the same console I run:

gradle test


        

Answer 1

Merge of Shubham's great answer and JJD use enum instead of string

tasks.withType(Test) {
   testLogging {
       // set options for log level LIFECYCLE
       events TestLogEvent.PASSED,
            TestLogEvent.SKIPPED, TestLogEvent.FAILED, TestLogEvent.STANDARD_OUT
       showExceptions true
       exceptionFormat TestExceptionFormat.FULL
       showCauses true
       showStackTraces true

    // set options for log level DEBUG and INFO
       debug {
        events TestLogEvent.STARTED, TestLogEvent.PASSED, TestLogEvent.SKIPPED, TestLogEvent.FAILED, TestLogEvent.STANDARD_OUT, TestLogEvent.STANDARD_ERROR
        exceptionFormat TestExceptionFormat.FULL
       }
       info.events = debug.events
       info.exceptionFormat = debug.exceptionFormat

       afterSuite { desc, result ->
           if (!desc.parent) { // will match the outermost suite
               def output = "Results: ${result.resultType} (${result.testCount} tests, ${result.successfulTestCount} successes, ${result.failedTestCount} failures, ${result.skippedTestCount} skipped)"
               def startItem = '|  ', endItem = '  |'
               def repeatLength = startItem.length() + output.length() + endItem.length()
               println('\n' + ('-' * repeatLength) + '\n' + startItem + output + endItem + '\n' + ('-' * repeatLength))
           }
       }
   }
}

Answer 2

If you have a build.gradle.kts written in Kotlin DSL you can print test results with (I was developing a kotlin multi-platform project, with no "java" plugin applied):

tasks.withType<AbstractTestTask> {
    afterSuite(KotlinClosure2({ desc: TestDescriptor, result: TestResult ->
        if (desc.parent == null) { // will match the outermost suite
            println("Results: ${result.resultType} (${result.testCount} tests, ${result.successfulTestCount} successes, ${result.failedTestCount} failures, ${result.skippedTestCount} skipped)")
        }
    }))
}

Answer 3

You could run Gradle with INFO logging level on the command line. It'll show you the result of each test while they are running. Downside is that you will get far more output for other tasks also.

gradle test -i

Answer 4

Here is my fancy version:

import org.gradle.api.tasks.testing.logging.TestExceptionFormat
import org.gradle.api.tasks.testing.logging.TestLogEvent

tasks.withType(Test) {
    testLogging {
        // set options for log level LIFECYCLE
        events TestLogEvent.FAILED,
               TestLogEvent.PASSED,
               TestLogEvent.SKIPPED,
               TestLogEvent.STANDARD_OUT
        exceptionFormat TestExceptionFormat.FULL
        showExceptions true
        showCauses true
        showStackTraces true

        // set options for log level DEBUG and INFO
        debug {
            events TestLogEvent.STARTED,
                   TestLogEvent.FAILED,
                   TestLogEvent.PASSED,
                   TestLogEvent.SKIPPED,
                   TestLogEvent.STANDARD_ERROR,
                   TestLogEvent.STANDARD_OUT
            exceptionFormat TestExceptionFormat.FULL
        }
        info.events = debug.events
        info.exceptionFormat = debug.exceptionFormat

        afterSuite { desc, result ->
            if (!desc.parent) { // will match the outermost suite
                def output = "Results: ${result.resultType} (${result.testCount} tests, ${result.successfulTestCount} passed, ${result.failedTestCount} failed, ${result.skippedTestCount} skipped)"
                def startItem = '|  ', endItem = '  |'
                def repeatLength = startItem.length() + output.length() + endItem.length()
                println('\n' + ('-' * repeatLength) + '\n' + startItem + output + endItem + '\n' + ('-' * repeatLength))
            }
        }
    }
}

Answer 5

'test' task does not work for Android plugin, for Android plugin use the following:

// Test Logging
tasks.withType(Test) {
    testLogging {
        events "started", "passed", "skipped", "failed"
    }
}

See the following: https://stackoverflow.com/a/31665341/3521637

Answer 6

As a follow up to Shubham's great answer I like to suggest using enum values instead of strings. Please take a look at the documentation of the TestLogging class.

import org.gradle.api.tasks.testing.logging.TestExceptionFormat
import org.gradle.api.tasks.testing.logging.TestLogEvent

tasks.withType(Test) {
    testLogging {
        events TestLogEvent.FAILED,
               TestLogEvent.PASSED,
               TestLogEvent.SKIPPED,
               TestLogEvent.STANDARD_ERROR,
               TestLogEvent.STANDARD_OUT
        exceptionFormat TestExceptionFormat.FULL
        showCauses true
        showExceptions true
        showStackTraces true
    }
}