Runing junit test via gradle doesn't show the expectation

Question

Running: ./gradlew test triggers the test run successfully:

Task :test FAILED

PerfectNumberTest > Test calcPerfectNumbers() method FAILED
    org.opentest4j.AssertionFailedError at PerfectNumberTest.java:51

5 tests completed, 1 failed

However, I do not get the output which would indicate what exactly went wrong in the test,

For instance: expected 1 instead of 2

These are the dependencies which I'm using:

dependencies {
    testImplementation platform('org.junit:junit-bom:5.9.1')
    testImplementation 'org.junit.jupiter:junit-jupiter'
}

Answer 1

Use the following configuration to your build.gradle file:

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.STARTED,
                   TestLogEvent.FAILED,
                   TestLogEvent.PASSED,
                   TestLogEvent.SKIPPED,
                   TestLogEvent.STANDARD_ERROR,
                   TestLogEvent.STANDARD_OUT
        exceptionFormat TestExceptionFormat.FULL
        showExceptions true
        showCauses true
        showStackTraces true
        info.events = debug.events
        info.exceptionFormat = debug.exceptionFormat

        afterSuite { desc, result ->
            if (!desc.parent) { // will match the outermost suite
                def duration = String.format("%.3f sec", (result.endTime - result.startTime) / 1000)
                def output = "Results: ${result.resultType} (${result.testCount} tests, ${result.successfulTestCount} passed, ${result.failedTestCount} failed, ${result.skippedTestCount} skipped) ${duration}"
                def startItem = '|  ', endItem = '  |'
                def repeatLength = startItem.length() + output.length() + endItem.length()
                println('\n' + ('-' * repeatLength) + '\n' + startItem + output + endItem + '\n' + ('-' * repeatLength))
            }
        }
    }
}

This configuration will show everything even the console outuput

See this post question for more details Gradle: How to Display Test Results in the Console in Real Time?