/*
* Copyright 2014 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.core.client.impl;
import static com.google.gwt.core.client.impl.StackTraceExamples.JAVA;
import static com.google.gwt.core.client.impl.StackTraceExamples.RECURSION;
import static com.google.gwt.core.client.impl.StackTraceExamples.TYPE_ERROR;
import com.google.gwt.junit.client.GWTTestCase;
import junit.framework.AssertionFailedError;
/**
* Tests {@link StackTraceCreator}.
*/
public abstract class StackTraceTestBase extends GWTTestCase {
public void testTraceJava() {
Exception t = StackTraceExamples.getLiveException(JAVA);
assertTrace(getTraceJava(), t);
}
protected abstract String[] getTraceJava();
public void testTraceRecursion() {
Exception t = StackTraceExamples.getLiveException(RECURSION);
assertTrace(getTraceRecursion(), t);
}
protected abstract String[] getTraceRecursion();
public void testTraceTypeError() {
assertJse(TYPE_ERROR);
}
public void testTraceString() {
assertJse("testing");
}
public void testTraceNull() {
assertJse(null);
}
private void assertJse(Object whatToThrow) {
Exception t = StackTraceExamples.getLiveException(whatToThrow);
String[] expected = getTraceJse(whatToThrow);
assertTrace(expected, t);
}
protected abstract String[] getTraceJse(Object whatToThrow);
private void assertTrace(String[] expected, Exception t) {
StackTraceElement[] trace = t.getStackTrace();
for (int i = 0; i < expected.length; i++) {
StackTraceElement actualElement = trace[i];
String methodName = actualElement == null ? "!MISSING!" : actualElement.getMethodName();
if (expected[i].equals(methodName)) {
continue;
}
AssertionFailedError e = new AssertionFailedError("Incorrect frame at " + i + " - "
+ " Expected: " + expected[i] + " Actual: " + methodName);
e.initCause(t);
throw e;
}
}
}