I saw that I'm not the only one having this problem but I don't find a correct answer. I have an android project that I want to test. I create a junit test class for each class of my project. My problem is when I run my test, I have the following error :
java.lang.NoClassDefFoundError: android/content/Context
This is my class test :
public class DevicesBDDTest extends TestCase {
DevicesBDD bdd;
/**
* @throws java.lang.Exception
*/
protected static void setUpBeforeClass() throws Exception {
}
/**
* @throws java.lang.Exception
*/
protected static void tearDownAfterClass() throws Exception {
}
protected void setUp() throws Exception {
super.setUp();
Context ctx = mock(Context.class);
final MaBaseSQLiteInterface mockMaBaseSQLite = mock(MaBaseSQLiteInterface.class);
bdd = new DevicesBDD(ctx){
@Override
public MaBaseSQLiteInterface createMaBaseSQlite(Context context) {
return mockMaBaseSQLite;
}
};
}
protected void tearDown() throws Exception {
super.tearDown();
}
public void test() {
assertEquals(1, 1);
}
}
My class DevicesBDD has needs an object Context, therefore I create a mock (with mockito). I tried with a object MockContext too, but it's doesn't work.
This is my Java Build Path :
Not sure if I had the same problem as you but I am using gradle and for some reason the tests just wouldn't run anymore, with the same error as you had. I tried cleaning and rebuilding but to no avail. After hours of frustration and trying to find an answer I came across the simple solution in a GitHub thread:
I resolved this issue by removing the .gradle folder in my project and rebuilding the project.
(thanks to vpetrov)
You can run ./gradlew clean test
in the terminal.
Fixed the issue by following these steps --
1.Open module level build.gradle file, go to dependencies, go to this line --
testImplementation 'junit:junit:4.12'
2.Change the junit version to anything else below it (like 4.10)
testImplementation 'junit:junit:4.10'
3.Sync project
4.The issue fixed at this point in my case
5.Set the junit version back to what it was before (4.12 in my case) if you want
testImplementation 'junit:junit:4.12'
6.Sync project
Changing the junit version and syncing project worked in my case.
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