| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.drill.yarn.client; |
| |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.PrintStream; |
| import java.io.UnsupportedEncodingException; |
| |
| import org.apache.drill.test.BaseTest; |
| import org.junit.Test; |
| |
| public class TestClient extends BaseTest { |
| |
| /** |
| * Unchecked exception to allow capturing "exit" events without actually |
| * exiting. |
| */ |
| |
| public static class SimulatedExitException extends RuntimeException { |
| private static final long serialVersionUID = 1L; |
| public int exitCode; |
| |
| public SimulatedExitException(int exitCode) { |
| this.exitCode = exitCode; |
| } |
| } |
| |
| public static class TestContext extends ClientContext { |
| public static ByteArrayOutputStream captureOut = new ByteArrayOutputStream(); |
| public static ByteArrayOutputStream captureErr = new ByteArrayOutputStream(); |
| |
| public static void testInit() { |
| init(new TestContext()); |
| resetOutput(); |
| } |
| |
| @Override |
| public void exit(int exitCode) { |
| throw new SimulatedExitException(exitCode); |
| } |
| |
| public static void resetOutput() { |
| try { |
| out.flush(); |
| captureOut.reset(); |
| out = new PrintStream(captureOut, true, "UTF-8"); |
| err.flush(); |
| captureErr.reset(); |
| err = new PrintStream(captureErr, true, "UTF-8"); |
| } catch (UnsupportedEncodingException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| public static String getOut() { |
| out.flush(); |
| try { |
| return captureOut.toString("UTF-8"); |
| } catch (UnsupportedEncodingException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| public static String getErr() { |
| out.flush(); |
| try { |
| return captureErr.toString("UTF-8"); |
| } catch (UnsupportedEncodingException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| } |
| |
| /** |
| * Test the basics of the DrillOnYarn app. Does not try any real commands, but |
| * does check for the basic error conditions. |
| */ |
| |
| @Test |
| public void testBasics() { |
| TestContext.testInit(); |
| |
| // No arguments provided. |
| |
| try { |
| DrillOnYarn.run(new String[] {}); |
| fail(); |
| } catch (SimulatedExitException e) { |
| assert (e.exitCode == -1); |
| assertTrue(TestContext.getOut().contains("Usage: ")); |
| TestContext.resetOutput(); |
| } |
| |
| // Bogus command |
| |
| try { |
| DrillOnYarn.run(new String[] { "bogus" }); |
| fail(); |
| } catch (SimulatedExitException e) { |
| assert (e.exitCode == -1); |
| assertTrue(TestContext.getOut().contains("Usage: ")); |
| TestContext.resetOutput(); |
| } |
| } |
| |
| // The idea here is to set up a simulated client environment, then |
| // test each command. This is a big project. |
| |
| } |