Problems with testing in project with gradle

Question

I want to use junt 4 for testing in my project, i added new class and one method to it for testing, when i try to tun it, i have this problem, how should i fix it. When i try to run test i have a problem:

Could not write standard input to Gradle Test Executor 6.
java.io.IOException:
    at java.base/java.io.FileOutputStream.writeBytes(Native Method)
    at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354)
    at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81)
    at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142)
    at org.gradle.process.internal.streams.ExecOutputHandleRunner.forwardContent(ExecOutputHandleRunner.java:67)
    at org.gradle.process.internal.streams.ExecOutputHandleRunner.run(ExecOutputHandleRunner.java:52)
    at 
...
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':test'.
> No tests found for given includes: [SimpleTest.test](filter.includeTestsMatching)
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 0s
5 actionable tasks: 2 executed, 3 up-to-date

My build.gradle file:

plugins {
  id 'application'
  id 'org.openjfx.javafxplugin' version '0.0.8'
  id 'org.beryx.jlink' version '2.12.0'
}

sourceCompatibility = JavaVersion.VERSION_11

repositories {
    mavenCentral()
}

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.12'
}


javafx {
    version = "14"
    modules = [ 'javafx.controls', 'javafx.fxml' ]
}

mainClassName = "$moduleName/org.openjfx.MainApp"

jlink {
    options = ['--strip-debug', '--compress', '2', '--no-header-files', '--no-man-pages'] ;
    launcher {
        name = 'hellofx'
    }
}

I don't now how to fix it, please help me!

Class with tests:

import org.junit.Assert;
import org.junit.Test;

public class SimpleTest {
    @Test
    public void test() {
        Assert.assertTrue(true);
    }
}

Also my projects repository

Answer 1

Try adding the following to your build.gradle . The problem is Gradle doesn't know how to find the tests as you haven't specified a test runner.

test {
   useJUnit()
}