test-runner/tests/src/android/test/TestCaseUtilTest.java

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.test;

import java.util.ArrayList;
import java.util.HashSet;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import java.util.List;

public class TestCaseUtilTest extends TestCase {

    @SuppressWarnings("unchecked")
    private static List<String> getTestCaseNames(Test test) {
        List<Test> tests = (List<Test>) TestCaseUtil.getTests(test, false);
        List<String> testCaseNames = new ArrayList<>();
        for (Test aTest : tests) {
            testCaseNames.add(TestCaseUtil.getTestName(aTest));
        }
        return testCaseNames;
    }

    public void testGetTests_ForTestSuiteWithSuiteMethod() throws Exception {
        TestSuite testSuite = new TwoTestsInTestSuite();

        List<String> testCaseNames = getTestCaseNames(testSuite);

        assertEquals(0, testCaseNames.size());
    }
    
    public void testGetTests_ForTestCaseWithSuiteMethod() throws Exception {
        TestCase testCase = new OneTestTestCaseWithSuite();

        List<String> testCaseNames = getTestCaseNames(testCase);

        assertEquals(1, testCaseNames.size());
        assertTrue(testCaseNames.get(0).endsWith("testOne"));
    }

    public void testInvokeSuiteMethodIfPossible_ForTestCase() throws Exception {
        Test test = TestCaseUtil.invokeSuiteMethodIfPossible(OneTestTestCase.class, new HashSet<>());
        assertNull(test);
    }

    public void testInvokeSuiteMethodIfPossible_ForTestSuiteWithSuiteMethod() throws Exception {
        Test test = TestCaseUtil.invokeSuiteMethodIfPossible(TwoTestsInTestSuite.class, new HashSet<>());
        assertNotNull(test);
        assertEquals(2, test.countTestCases());
    }

    public void testInvokeSuiteMethodIfPossible_ForTestCaseWithSuiteMethod() throws Exception {
        Test test = TestCaseUtil.invokeSuiteMethodIfPossible(OneTestTestCaseWithSuite.class, new HashSet<>());
        assertNotNull(test);
        assertEquals(1, test.countTestCases());
    }

    public void testReturnEmptyStringForTestSuiteWithNoName() throws Exception {
        assertEquals("", TestCaseUtil.getTestName(new TestSuite()));
    }

    public static class OneTestTestCase extends TestCase {
        public void testOne() throws Exception {
        }
    }

    public static class OneTestTestCaseWithSuite extends TestCase {
        public static Test suite()  {
            TestCase testCase = new OneTestTestCase();
            testCase.setName("testOne");
            return testCase;
        }

        public void testOne() throws Exception {
        }

        public void testTwo() throws Exception {
        }
    }

    public static class OneTestTestSuite {
        public static Test suite() {
            TestSuite suite = new TestSuite(OneTestTestSuite.class.getName());
            suite.addTestSuite(OneTestTestCase.class);
            return suite;
        }
    }

    public static class TwoTestsInTestSuite extends TestSuite {
        public static Test suite() {
            TestSuite suite = new TestSuite(TwoTestsInTestSuite.class.getName());
            suite.addTestSuite(OneTestTestCase.class);
            suite.addTest(OneTestTestSuite.suite());
            return suite;
        }
    }
}