package org.junit.tests.junit3compatibility;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import junit.framework.JUnit4TestAdapter;
import junit.framework.TestCase;
import junit.framework.TestResult;
import junit.framework.TestSuite;
import junit.textui.ResultPrinter;
import junit.textui.TestRunner;
import org.junit.Assert;
import org.junit.Test;
public class ForwardCompatibilityPrintingTest extends TestCase {
static class TestResultPrinter extends ResultPrinter {
TestResultPrinter(PrintStream writer) {
super(writer);
}
/*
* Spoof printing time so the tests are deterministic
*/
@Override
protected String elapsedTimeAsString(long runTime) {
return "0";
}
}
public void testError() {
ByteArrayOutputStream output = new ByteArrayOutputStream();
TestRunner runner = new TestRunner(new TestResultPrinter(
new PrintStream(output)));
String expected = expected(new String[]{".E", "Time: 0",
"Errors here", "", "FAILURES!!!",
"Tests run: 1, Failures: 0, Errors: 1", ""});
ResultPrinter printer = new TestResultPrinter(new PrintStream(output)) {
@Override
public void printErrors(TestResult result) {
getWriter().println("Errors here");
}
};
runner.setPrinter(printer);
TestSuite suite = new TestSuite();
suite.addTest(new TestCase() {
@Override
public void runTest() throws Exception {
throw new Exception();
}
});
runner.doRun(suite);
assertEquals(expected, output.toString());
}
public static class ATest {
@Test
public void error() {
Assert.fail();
}
}
public void testErrorAdapted() {
ByteArrayOutputStream output = new ByteArrayOutputStream();
TestRunner runner = new TestRunner(new TestResultPrinter(
new PrintStream(output)));
String expected = expected(new String[]{".E", "Time: 0",
"Errors here", "", "FAILURES!!!",
"Tests run: 1, Failures: 0, Errors: 1", ""});
ResultPrinter printer = new TestResultPrinter(new PrintStream(output)) {
@Override
public void printErrors(TestResult result) {
getWriter().println("Errors here");
}
};
runner.setPrinter(printer);
runner.doRun(new JUnit4TestAdapter(ATest.class));
assertEquals(expected, output.toString());
}
private String expected(String[] lines) {
OutputStream expected = new ByteArrayOutputStream();
PrintStream expectedWriter = new PrintStream(expected);
for (int i = 0; i < lines.length; i++) {
expectedWriter.println(lines[i]);
}
return expected.toString();
}
}