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I'm following this tutorial.
What I want to do is to create unit tests with AndroidJunitRunner.

My directory in app/src looks like this: 

androidTest
debug
main
release

android docs suggests that I create a test/java for my unit tests.
The problem is that in android studio I can't create a new directory if I'm on android project mode. And I should find the directory manually and create it manually.
Is there a way to automatically create these directories and tests for one flavor?
I've read this question, which doesn't relate to my problem.

Community
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Mehrdad Shokri
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2 Answers2

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It's easiest to just create the folder manually in the directory. Android Studio will notice it pretty quickly and it will show up in your Android view.

You will need to create the packages in the test/java folder too. So if your package name is com.foo.bar you need to create the following dir structure in your app/src folder:

test/java/com/foo/bar

As an aside in the latest versions of Android Studio you don't need to use AndroidJunitRunner anymore. Studio supports JUnit4 tests out of the box.

To make tests for a particular flavor you need to append the flavor name to the end of the test folder. So if your flavor is dev then the folder structure would be:

testDev/java/com/foo/bar

Jahnold
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  • tnx, one quick question: if I'm going to test a class in package: ``com.x.y.model`` should I create the same package in test directory? Also, I read in google docs that if I change a class method or something in source both unit tests and instrument tests are going to sync. but I don't see any sync here why? – Mehrdad Shokri Jun 11 '16 at 12:17
  • Yes the test package should match the class under test. Once you've made the test base directory though it's easy to make a test for a class by pressing cmd+shift+t and it will create the test in the correct place. I'm unsure what you mean by `sync` sorry – Jahnold Jun 11 '16 at 12:25
  • tnx, just one more question: Are these tests are shipped to production code too? – Mehrdad Shokri Jun 11 '16 at 15:26
  • No the tests are not compiled into the apk. Also you'll note that in your build.gradle you can specify your test dependencies with `testCompile` so that they too are only used in the tests. – Jahnold Jun 11 '16 at 17:48
  • your answer and comments cleared so many things. thank you very much. – Mehrdad Shokri Jun 12 '16 at 18:24
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Just change to Project Mode and create the test folder. Take a look to the screenshot.

enter image description here

By the way, I think when you create a project the folder is already created.

José Carlos
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