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Closure Compiler is a JavaScript optimizing compiler. It parses your
JavaScript, analyzes it, removes dead code and rewrites and minimizes
what's left. It also checks syntax, variable references, and types, and
warns about common JavaScript pitfalls. It is used in many of Google's
JavaScript apps, including Gmail, Google Web Search, Google Maps, and
Google Docs.
/*
* Copyright 2015 The Closure Compiler Authors.
*
* 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.javascript.jscomp.testing;
import static org.junit.Assert.assertEquals;
import com.google.javascript.jscomp.BasicErrorManager;
import com.google.javascript.jscomp.CheckLevel;
import com.google.javascript.jscomp.JSError;
/**
* An ErrorManager that compares errors with a list of expected errors.
*/
public final class TestErrorManager extends BasicErrorManager {
private int errorIndex = 0;
private String[] errors = new String[0];
private int warningIndex = 0;
private String[] warnings = new String[0];
public void expectErrors(String... expectedErrors) {
this.errorIndex = 0;
this.errors = expectedErrors;
}
public void expectWarnings(String... expectedWarnings) {
this.warningIndex = 0;
this.warnings = expectedWarnings;
}
@Override
public void report(CheckLevel level, JSError error) {
super.report(level, error);
switch (level) {
case ERROR:
if (errorIndex >= errors.length) {
throw new AssertionError("Unexpected error: " + error);
}
assertEquals(errors[errorIndex++], error.getDescription());
break;
case WARNING:
if (errorIndex >= warnings.length) {
throw new AssertionError("Unexpected warning: " + error);
}
assertEquals(warnings[warningIndex++], error.getDescription());
break;
case OFF:
// no-op
break;
}
}
@Override
public void println(CheckLevel level, JSError error) {
// no-op
}
@Override
protected void printSummary() {
// no-op
}
public boolean hasEncounteredAllErrors() {
return errorIndex == errors.length;
}
public boolean hasEncounteredAllWarnings() {
return warningIndex == warnings.length;
}
}