| /* |
| * 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.test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.fail; |
| |
| import java.text.ParseException; |
| |
| import org.apache.pig.tools.cmdline.CmdLineParser; |
| import org.junit.Test; |
| |
| public class TestCmdLineParser { |
| |
| @Test(expected = AssertionError.class) |
| public void testRegisterDash() { |
| String[] args = { "a", "b", "c" }; |
| CmdLineParser p = new CmdLineParser(args); |
| try { |
| p.registerOpt('-', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| } catch (AssertionError e) { |
| assertEquals(e.getMessage(), |
| "CmdLineParser: '-' is not a legal single character designator."); |
| throw e; |
| } |
| } |
| |
| @Test(expected = AssertionError.class) |
| public void testDoubleRegisterShort() { |
| String[] args = { "a", "b", "c" }; |
| CmdLineParser p = new CmdLineParser(args); |
| try { |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| p.registerOpt('a', "beta", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| fail("Should have thrown an AssertionError"); |
| } catch (AssertionError e) { |
| assertEquals(e.getMessage(), |
| "CmdLineParser: You have already registered option a"); |
| throw e; |
| } |
| } |
| |
| @Test(expected = AssertionError.class) |
| public void testDoubleRegisterLong() { |
| String[] args = { "a", "b", "c" }; |
| CmdLineParser p = new CmdLineParser(args); |
| try { |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| p.registerOpt('b', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| } catch (AssertionError e) { |
| assertEquals(e.getMessage(), |
| "CmdLineParser: You have already registered option alpha"); |
| throw e; |
| } |
| } |
| |
| @Test |
| public void testRegister() { |
| String[] args = { "a", "b", "c" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| p.registerOpt('b', "beta", CmdLineParser.ValueExpected.REQUIRED); |
| p.registerOpt('c', null, CmdLineParser.ValueExpected.OPTIONAL); |
| } |
| |
| @Test |
| public void testParseNoArgs() throws ParseException { |
| String[] args = {}; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| assertEquals(CmdLineParser.EndOfOpts, p.getNextOpt()); |
| } |
| |
| @Test |
| public void testParseNoDash() throws ParseException { |
| String[] args = { "a" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| assertEquals(p.getNextOpt(), CmdLineParser.EndOfOpts); |
| String[] remainders = p.getRemainingArgs(); |
| assertEquals("a", remainders[0]); |
| } |
| |
| @Test |
| public void testParseLongShortNoLeftover() throws ParseException { |
| String[] args = { "-a", "--beta", "beth", "--c" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| p.registerOpt('b', "beta", CmdLineParser.ValueExpected.REQUIRED); |
| p.registerOpt('c', null, CmdLineParser.ValueExpected.OPTIONAL); |
| assertEquals('a', p.getNextOpt()); |
| assertEquals('b', p.getNextOpt()); |
| assertEquals("beth", p.getValStr()); |
| assertEquals('c', p.getNextOpt()); |
| assertNull(p.getValStr()); |
| assertEquals(CmdLineParser.EndOfOpts, p.getNextOpt()); |
| assertNull(p.getRemainingArgs()); |
| } |
| |
| @Test |
| public void testParseLongShortLeftover1() throws ParseException { |
| String[] args = { "-a", "--beta", "beth", "--c", "gimel", "-", "hi", "i'm", "left", |
| "over" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| p.registerOpt('b', "beta", CmdLineParser.ValueExpected.REQUIRED); |
| p.registerOpt('c', null, CmdLineParser.ValueExpected.OPTIONAL); |
| assertEquals('a', p.getNextOpt()); |
| assertEquals('b', p.getNextOpt()); |
| assertEquals("beth", p.getValStr()); |
| assertEquals('c', p.getNextOpt()); |
| assertEquals("gimel", p.getValStr()); |
| assertEquals(CmdLineParser.EndOfOpts, p.getNextOpt()); |
| String[] r = p.getRemainingArgs(); |
| assertEquals(4, r.length); |
| } |
| |
| // has two dashes instead of one for end of args |
| @Test |
| public void testParseLongShortLeftover2() throws ParseException { |
| String[] args = { "-a", "-beta", "beth", "--c", "gimel", "--", "hi", "i'm", "left", |
| "over" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| p.registerOpt('b', "beta", CmdLineParser.ValueExpected.REQUIRED); |
| p.registerOpt('c', null, CmdLineParser.ValueExpected.OPTIONAL); |
| assertEquals(p.getNextOpt(), 'a'); |
| assertEquals(p.getNextOpt(), 'b'); |
| assertEquals(p.getValStr(), "beth"); |
| assertEquals(p.getNextOpt(), 'c'); |
| assertEquals(p.getValStr(), "gimel"); |
| assertEquals(p.getNextOpt(), CmdLineParser.EndOfOpts); |
| String[] r = p.getRemainingArgs(); |
| assertEquals(r.length, 4); |
| } |
| |
| @Test |
| public void testParseLongShortLeftover3() throws ParseException { |
| String[] args = { "-a", "--beta", "5", "--c", "--" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| p.registerOpt('b', "beta", CmdLineParser.ValueExpected.REQUIRED); |
| p.registerOpt('c', null, CmdLineParser.ValueExpected.OPTIONAL); |
| assertEquals('a', p.getNextOpt()); |
| assertEquals('b', p.getNextOpt()); |
| Integer ii = p.getValInt(); |
| assertEquals(5, ii.intValue()); |
| assertEquals('c', p.getNextOpt()); |
| assertNull(p.getValInt()); |
| assertEquals(CmdLineParser.EndOfOpts, p.getNextOpt()); |
| String[] r = p.getRemainingArgs(); |
| assertNull(p.getRemainingArgs()); |
| } |
| |
| @Test |
| public void testParseValueNotAcceptedProvided1() throws ParseException { |
| String[] args = { "-a", "aleph" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| assertEquals('a', p.getNextOpt()); |
| String[] r = p.getRemainingArgs(); |
| assertEquals(1, r.length); |
| assertEquals("aleph", r[0]); |
| } |
| |
| @Test |
| public void testParseValueNotAcceptedProvided2() throws ParseException { |
| String[] args = { "-alpha", "aleph" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| assertEquals('a', p.getNextOpt()); |
| String[] r = p.getRemainingArgs(); |
| assertEquals(1, r.length); |
| assertEquals("aleph", r[0]); |
| } |
| |
| @Test(expected = ParseException.class) |
| public void testParseValueRequiredNotProvided1() throws Exception { |
| String[] args = { "-a" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.REQUIRED); |
| try { |
| p.getNextOpt(); |
| } catch (ParseException e) { |
| assertEquals(e.getMessage(), |
| "Option -a requires a value but you did not provide one."); |
| throw e; |
| } |
| } |
| |
| @Test(expected = ParseException.class) |
| public void testParseValueRequiredNotProvided2() throws Exception { |
| String[] args = { "--alpha", "-b" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.REQUIRED); |
| p.registerOpt('b', "beta", CmdLineParser.ValueExpected.NOT_ACCEPTED); |
| try { |
| p.getNextOpt(); |
| } catch (ParseException e) { |
| assertEquals(e.getMessage(), |
| "Option --alpha requires a value but you did not provide one."); |
| throw e; |
| } |
| } |
| |
| @Test(expected = NumberFormatException.class) |
| public void testParseValueStrForInt() throws ParseException { |
| String[] args = { "-alpha", "b" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.REQUIRED); |
| p.getNextOpt(); |
| Integer ii = p.getValInt(); |
| } |
| |
| @Test(expected = ParseException.class) |
| public void testParseUnknownShort() throws Exception { |
| String[] args = { "-alpha", "b", "-z" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.REQUIRED); |
| try { |
| p.getNextOpt(); |
| assertEquals("b", p.getValStr()); |
| p.getNextOpt(); |
| } catch (ParseException e) { |
| assertEquals(e.getMessage(), |
| "Found unknown option (-z) at position 3"); |
| throw e; |
| } |
| } |
| |
| @Test(expected = ParseException.class) |
| public void testParseUnknownLong() throws Exception { |
| String[] args = { "--zeta" }; |
| CmdLineParser p = new CmdLineParser(args); |
| p.registerOpt('a', "alpha", CmdLineParser.ValueExpected.REQUIRED); |
| try { |
| p.getNextOpt(); |
| } catch (ParseException e) { |
| assertEquals(e.getMessage(), |
| "Found unknown option (--zeta) at position 1"); |
| throw e; |
| } |
| } |
| } |