Android and JUnit: How to add individual tests to test suite?

Question

I've been struggling for a while with this. When creating a test suite in JUnit/Android, I can to the following:

Add all the tests (in all the classes) that exist in the same package as the suite
Add a specific class contatining testMethods

However, I'm completely unable to do the following:

Add a specific testMethod from a specific class to the test suite.

Now, I understand that this SHOULD be possible, as there are countless examples showing this.

This is how it's supposed to work:

The test class contatining the test methods:

import com.frank.android.lookup.SomeClass;
import android.test.AndroidTestCase;

public class ArithmeticsTests extends AndroidTestCase {
    SomeClass sctest;

    protected void setUp () throws Exception {
        sctest = new SomeClass();
        super.setUp();
    }

    public void testAddNumbers () {
        assertEquals(9, sctest.addNumbers(3, 6));
    }

    public void testSubtractNumbers () {
        assertEquals(2, sctest.subtractNumbers(6, 4));
    }

    protected void tearDown () throws Exception {
        super.tearDown();
    }
}

And here's the test suite class:

import junit.framework.TestSuite;

public class ProjectTestSuite_SomeTests extends TestSuite {

    public static Test suite () {
        TestSuite suite = new TestSuite("ArithmeticsTests");
        suite.addTest(new ArithmeticsTests("testAddNumbers"));
        suite.addTest(new ArithmeticsTests2("testSubtractNumbers"));

        return suite;
    }
}

Now, the two lines where I try adding the individual test methods result in this error:

The constructor ArithmeticsTests(String) is undefined

Now, I've looke around for a long time, and I cannot find any explanation for this. It seems that something is missing, since it doesn't understand what I'm trying to do. The "string" it complains about is in fact the name of the method - I'm not trying to pass a string to a constructor of the class - I'm trying to add the method of the class to the test suite.

I'm using the JUnit version that's included with the Android SDK here, and I haven't installed anything else related to that. Is there something missing? (Obviously there is, bit what?)

EDIT:

I added a construtor to the ArithmeticsTests class:

public ArithmeticsTests (String s) {}

Now the above error is gone.

However, when I run the test suite, I get this error:

testSuiteCreationFailed
....
Caused by: java.lang.NullPointerException: Method name must not be null.

Well, it's obvious: you don't have an `ArithmeticsTests(String)` constructor. — m0skit0, Jan 14 '13 at 13:15
It seems to be obvious, yes. So I added a constructor "public ArithmeticsTests (String s)" to the test class. No error messages in the editor, but when I run the test suite I get this error: testSuiteConstructionFailed. See updated main post. — , Jan 14 '13 at 13:45
F.ex. the Android API documentation: http://developer.android.com/reference/junit/framework/TestSuite.html — , Jan 14 '13 at 14:14
Fantastic. It seems that 1. No one has ever seen this problem, and 2. No one has any clue about it. — , Jan 14 '13 at 19:28
Did the answer below work for you ? If not please comment on it - if yes please accept — Mr_and_Mrs_D, Oct 20 '13 at 07:36
And how is this question different than the other one --> http://stackoverflow.com/questions/14234131/how-do-i-create-android-test-suite-which-only-runs-specified-tests-in-one-or-mor? — Mr_and_Mrs_D, Oct 20 '13 at 07:43
Nope. None of the answers solved it, and I don't expect anyone to be able to either. So I really cannot accept any answer here. — , Oct 23 '13 at 12:38
@kakemonsteret Out of curiosity, why did you choose to use TestSuite & AndroidTestCase instead of ActivityInstrumentationTestCase2 or ActivityUnitTestCase classes? — IgorGanapolsky, Apr 30 '14 at 19:14

score 2 · Answer 1 · answered Jul 08 '13 at 08:12

I came up with the same problem and discovered that, while AndroidTestCase does not have a constructor taking a String parameter, it does have a setName(String name) method. By calling the setName method, you can add individual method to the test case. Using the code in your example, your test suite may look like:

import junit.framework.TestSuite;

public class ProjectTestSuite_SomeTests extends TestSuite {

    public static Test suite () {
        TestSuite suite = new TestSuite("ArithmeticsTests");
        ArithmeticsTests arithmeticsTests = new ArithmeticsTests();
        arithmeticsTests.setName("testAddNumbers");
        suite.addTest(arithmeticsTests);
        ArithmeticsTests2 arithmeticsTest2 = new ArithmeticsTests2();
        arithmeticsTest2.setName("testSubtractNumbers");
        suite.addTest(arithmeticsTest2);

        return suite;
    }
}

score 1 · Answer 2 · edited Mar 31 '14 at 10:29

1

This worked for me.

public static TestSuite suite() {
    final TestSuite t = new TestSuite();
    t.addTest(TestSuite.createTest(TestExampleClass1.class, "test1"));
    t.addTest(TestSuite.createTest(TestExampleClass2.class, "test2"));
    t.addTest(TestSuite.createTest(TestExampleClass3.class, "test2"));

    return t;
}

edited Mar 31 '14 at 10:29

Kjuly

34,476
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answered Mar 31 '14 at 10:09

bhardwaj

41
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Android and JUnit: How to add individual tests to test suite?

EDIT:

2 Answers2