Gradle and JUnit example

In Gradle, you can declare the JUnit dependency like this:

	apply plugin: 'java'
	dependencies {
		testCompile 'junit:junit:4.12'

By default, JUnit comes with a bundled copy of hamcrest-core

$ gradle dependencies --configuration testCompile
testCompile - Compile classpath for source set 'test'.
\--- junit:junit:4.12
     \--- org.hamcrest:hamcrest-core:1.3

1. Gradle + JUnit + Hamcrest

Normally, we need the useful hamcrest-library library, so, better exclude the JUnit bundled copy of hamcrest-core and include the original hamcrest-core library. Review the updated pom.xml again.

	apply plugin: 'java'
	dependencies {
		testCompile('junit:junit:4.12'){
			exclude group: 'org.hamcrest'
		testCompile 'org.hamcrest:hamcrest-library:1.3'

Review the dependency again.

$ gradle dependencies --configuration testCompile
testCompile - Compile classpath for source set 'test'.
+--- junit:junit:4.12
\--- org.hamcrest:hamcrest-library:1.3
     \--- org.hamcrest:hamcrest-core:1.3

References

1. Gradle display project dependency
2. JUnit – Use with Gradle