/*
* Copyright 2013 Google Inc.
*
* 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 com.google.gwt.logging.client;
import com.google.gwt.junit.client.GWTTestCase;
import com.google.gwt.logging.impl.StackTracePrintStream;
/**
* Tests {@link StackTracePrintStream}.
*/
public class StackTracePrintStreamTest extends GWTTestCase {
@Override
public String getModuleName() {
return "com.google.gwt.logging.Logging";
}
public void testPrintStackTrace() throws Exception {
StringBuilder actual = new StringBuilder();
createTestException().printStackTrace(new StackTracePrintStream(actual));
StringBuilder expected = new StringBuilder();
expected.append("custom msg\n");
expected.append("\tat c1.m1(f1:1)\n");
expected.append("\tat c2.m2(f2:2)\n");
expected.append("Caused by: custom msg cause\n");
expected.append("\tat c3.m3(f3:3)\n");
expected.append("\tat c4.m4(f4:4)\n");
assertEquals(expected.toString(), actual.toString());
}
private Throwable createTestException() {
Exception exception = new Exception() {
@Override
public String toString() {
return "custom msg";
}
};
exception.setStackTrace(new StackTraceElement[] {
new StackTraceElement("c1", "m1", "f1", 1), new StackTraceElement("c2", "m2", "f2", 2)});
Exception cause = new Exception() {
@Override
public String toString() {
return "custom msg cause";
}
};
cause.setStackTrace(new StackTraceElement[] {
new StackTraceElement("c3", "m3", "f3", 3), new StackTraceElement("c4", "m4", "f4", 4)});
return exception.initCause(cause);
}
}