Getting one simple Junit test to compile with Gradle on MacOSx

Question

I'm trying to get the most bare-bones gradle project (with tests) to build. Have looked at all related questions and Google searches, and I seem to be missing something very fundamental, and apparently uncommon.

I created one test class, and "gradle compileTestJava" fails to compile the file saying

package org.junit does not exist

It finds the test, knows it's a test, but can't seem to find its own junit.jar file.

build.gradle contains

apply plugin: 'java'

and that is it. Bare bones! I also tried adding

dependencies {

testCompile 'junit:junit:4.10'

}

With that I get "Could not resolve all dependencies" which makes me think gradle has lost its way around its own files(?). I see gradle's installed /Users/me/Documents/Projects/gradle-1.3/lib/plugins/junit-4.10.jar file.

In fact, when I run "gradle dependencies" I get

testCompile - Classpath for compiling the test sources. No dependencies 

I have no idea if that is supposed to include built-in plugin dependencies or not. My guess is that it should list junit.

Any ideas?

Here's what I get:

:compileTestJava  /Users/me/Documents/Projects/experiment1/src/test/java/MyUnitTests.java:3: package org.junit does not exist import org.junit.*;        ^ /Users/me/Documents/Projects/experiment1/src/test/java/MyUnitTests.java:7: cannot find symbol symbol  : class Test location: class test.java.MyUnitTests     @Test      ^ /Users/me/Documents/Projects/experiment1/src/test/java/MyUnitTests.java:9: cannot find symbol symbol  : variable Assert location: class test.java.MyUnitTests             Assert.assertEquals(2 + 2, 4);             ^ 3 errors  FAILED  FAILURE: Build failed with an exception. 

Answer 1

You need to make sure you have your repos set up, and you need to include the dependency for junit. This means that you need something that looks like this for your build.gradle

repositories {     mavenCentral() }  apply plugin: 'java'  dependencies {     testCompile 'junit:junit:4.10' } 

Answer 2

In my build.gradle I had this:

android { sourceSets { main { java.srcDirs = ['src/main/java', 'src/test/java'] } } 

And also

dependencies { testCompile 'junit:junit:4.12'} 

The problem went away when I deleted the following from the build.gradle

'src/test/java'