Tests pass when run individually but not when the whole test class run

Question

I have solved a topCoder problem for which all the tests pass when I run them on their own. Nonetheless when I run the whole test class some of them fail. Could you, please,

Answer 1

Since I am opening the same activity under test in many test cases executed one after another and same IntentsTestRule class activity

I could resolve the issue in my case by calling finishActivity on activityTestRule class and intentTestRule class

eg:

@After
fun method() {

mainActivityTestRule.finishActivity()

mIntentsRule.finishActivity()

}