| /* |
| * 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.pig.tools.parameters; |
| |
| import org.apache.hadoop.util.Shell; |
| import org.apache.pig.impl.logicalLayer.FrontendException; |
| import org.junit.Assume; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.Map; |
| import java.util.regex.Pattern; |
| |
| public class TestPreprocessorContext { |
| |
| @Test |
| public void testProcessShellCmd() throws ParameterSubstitutionException, FrontendException { |
| PreprocessorContext ctx = new PreprocessorContext(0); |
| String cmd = "echo hello"; |
| ctx.processShellCmd("some_value", "`" + cmd + "`"); |
| |
| Map<String, String> paramVal = ctx.getParamVal(); |
| assertEquals("hello", paramVal.get("some_value")); |
| } |
| |
| @Test |
| public void testProcessShellCmdBigStderr() throws ParameterSubstitutionException, FrontendException { |
| // This test probably doesn't work on Windows, but should work elsewhere |
| Assume.assumeFalse(Shell.WINDOWS); |
| |
| PreprocessorContext ctx = new PreprocessorContext(0); |
| String cmd = "bash -c 'i=0; while [ \"\\$i\" -lt 10000 ]; do echo long-stderr-output >&2; " + |
| "i=\\$((i+1)); done; echo hello'"; |
| ctx.processShellCmd("some_value", "`" + cmd + "`"); |
| |
| Map<String, String> paramVal = ctx.getParamVal(); |
| assertEquals("hello", paramVal.get("some_value")); |
| } |
| |
| @Test |
| public void testFailingCommand() throws ParameterSubstitutionException, FrontendException { |
| try { |
| PreprocessorContext ctx = new PreprocessorContext(0); |
| String cmd = "exit 1"; |
| ctx.processShellCmd("some_value", "`" + cmd + "`"); |
| } catch (RuntimeException e) { |
| assertTrue(Pattern.compile("Error executing shell command:.*exit code.*") |
| .matcher(e.getMessage()).matches() |
| ); |
| } |
| } |
| |
| @Test |
| public void testEscaping() throws ParameterSubstitutionException, FrontendException { |
| PreprocessorContext ctx = new PreprocessorContext(0); |
| // quote argument to echo so that the shell doesn't treat the backslash as an escape and consume it |
| String cmd = "echo '$\\stuff'"; |
| ctx.processShellCmd("some_value", "`" + cmd + "`"); |
| |
| String subVal = ctx.substitute("$some_value"); |
| assertEquals("$\\stuff", subVal); |
| } |
| } |