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package org.junit.tests.running.classes;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import java.util.List;
import org.hamcrest.Matcher;
import org.junit.Test;
import org.junit.internal.matchers.TypeSafeMatcher;
import org.junit.runner.Description;
import org.junit.runner.JUnitCore;
import org.junit.runner.Request;
import org.junit.runner.Result;
import org.junit.runner.manipulation.Filter;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.BlockJUnit4ClassRunner;
import org.junit.runners.ParentRunner;
import org.junit.runners.model.InitializationError;
import org.junit.runners.model.RunnerScheduler;
import org.junit.tests.experimental.rules.RuleFieldValidatorTest.TestWithNonStaticClassRule;
import org.junit.tests.experimental.rules.RuleFieldValidatorTest.TestWithProtectedClassRule;
public class ParentRunnerTest {
public static String log= "";
public static class FruitTest {
@Test
public void apple() {
log+= "apple ";
}
@Test
public void banana() {
log+= "banana ";
}
}
@Test
public void useChildHarvester() throws InitializationError {
log= "";
ParentRunner<?> runner= new BlockJUnit4ClassRunner(FruitTest.class);
runner.setScheduler(new RunnerScheduler() {
public void schedule(Runnable childStatement) {
log+= "before ";
childStatement.run();
log+= "after ";
}
public void finished() {
log+= "afterAll ";
}
});
runner.run(new RunNotifier());
assertEquals("before apple after before banana after afterAll ", log);
}
@Test
public void testMultipleFilters() throws Exception {
JUnitCore junitCore= new JUnitCore();
Request request= Request.aClass(ExampleTest.class);
Request requestFiltered= request.filterWith(new Exclude("test1"));
Request requestFilteredFiltered= requestFiltered
.filterWith(new Exclude("test2"));
Result result= junitCore.run(requestFilteredFiltered);
assertThat(result.getFailures(), isEmpty());
assertEquals(1, result.getRunCount());
}
private Matcher<List<?>> isEmpty() {
return new TypeSafeMatcher<List<?>>() {
public void describeTo(org.hamcrest.Description description) {
description.appendText("is empty");
}
@Override
public boolean matchesSafely(List<?> item) {
return item.size() == 0;
}
};
}
private static class Exclude extends Filter {
private String methodName;
public Exclude(String methodName) {
this.methodName= methodName;
}
@Override
public boolean shouldRun(Description description) {
return !description.getMethodName().equals(methodName);
}
@Override
public String describe() {
return "filter method name: " + methodName;
}
}
public static class ExampleTest {
@Test
public void test1() throws Exception {
}
@Test
public void test2() throws Exception {
}
@Test
public void test3() throws Exception {
}
}
@Test
public void failWithHelpfulMessageForProtectedClassRule() {
assertClassHasFailureMessage(TestWithProtectedClassRule.class,
"The @ClassRule 'temporaryFolder' must be public.");
}
@Test
public void failWithHelpfulMessageForNonStaticClassRule() {
assertClassHasFailureMessage(TestWithNonStaticClassRule.class,
"The @ClassRule 'temporaryFolder' must be static.");
}
private void assertClassHasFailureMessage(Class<?> klass, String message) {
JUnitCore junitCore= new JUnitCore();
Request request= Request.aClass(klass);
Result result= junitCore.run(request);
assertThat(result.getFailureCount(), is(2)); //the second failure is no runnable methods
assertThat(result.getFailures().get(0).getMessage(),
is(equalTo(message)));
}
}
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