Android Studio 2.1: error: package org.junit does not exist

Question

Update: Its a bug and it\'s been reported, please star: https://code.google.com/p/android/issues/detail?id=209832&thanks=209832&ts=1463161330

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Answer 1

Some things you should check -

• Do you have unit test and debug selected under build variants?
• Is your working directory set to $MODULE_DIR$ in Run/Debug configurations for the unit test?
• Did you create the test by selecting the class you wish to test, going to Navigate -> Test and having Android Studio construct the test class for you?

Answer 2

It looks like Gradle is not doing it's job.

Manually adding the jars fixed the problem.

Answer 3

Download (junit-4.12.jar) from https://github.com/junit-team/junit4/wiki/Download-and-Install and copy it in your libs folder:(yourProjectFolder/app/libs)

and then in build.gradle(Module: app) use this codes:

dependencies {
...
compile files('libs/junit-4.12.jar')
...
}

then rebuild your project.

Answer 4

I changed TestCompile to androidTestCompile and it's worked without problems.

testCompile 'junit:junit:4.12'

to

androidTestCompile 'junit:junit:4.12'

Answer 5

add this dependency to solve your issue

testCompile 'junit:junit:4.12'
compile 'junit:junit:4.12'

Answer 6

My tests are in src/test/java folder and adding test.setRoot('test') to sourceSets worked for me.

sourceSets {
    test.setRoot('test')
}