Android - Error Public Constructor in Instrumentation TestCase

error-test.txt

Error desc:
junit.framework.AssertionFailedError: Class fatorx.com.br.testdriven.MainActivityTest has no public constructor 
TestCase(String name) or TestCase()


When creating the test class, and automatically implemented in some cases the constructor as follows below:
    
    public MainActivityTest(Class<MainActivity> activityClass) {
        super(activityClass);
    }
    
The solution for this error is the following: create a constructor as follows:

    public MainActivityTest() {
        super(MainActivity.class);
    }