/*
* Copyright 2014 the original author or 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 org.springframework.yarn.boot.cli;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;
public class CliTester implements TestRule {
private final OutputCapture outputCapture = new OutputCapture();
public void run(AbstractCli cli, String... args) {
cli.doMain(args);
}
public String getOutput() {
return this.outputCapture.toString();
}
@Override
public Statement apply(Statement base, Description description) {
final Statement statement = CliTester.this.outputCapture.apply(new RunLauncherStatement(base), description);
return new Statement() {
@Override
public void evaluate() throws Throwable {
statement.evaluate();
}
};
}
private final class RunLauncherStatement extends Statement {
private final Statement base;
private RunLauncherStatement(Statement base) {
this.base = base;
}
@Override
public void evaluate() throws Throwable {
this.base.evaluate();
}
}
}