1 package com.beust.jcommander; 2 3 import org.testng.Assert; 4 import org.testng.annotations.Test; 5 6 import java.util.List; 7 8 /** 9 * Tests for @Parameter on top of methods. 10 */ 11 @Test 12 public class MethodSetterTest { 13 public void arityStringsSetter() { 14 class ArgsArityStringSetter { 15 16 @Parameter(names = "-pairs", arity = 2, description = "Pairs") 17 public void setPairs(List<String> pairs) { 18 this.pairs = pairs; 19 } 20 public List<String> getPairs() { 21 return this.pairs; 22 } 23 public List<String> pairs; 24 25 @Parameter(description = "Rest") 26 public void setRest(List<String> rest) { 27 this.rest = rest; 28 } 29 // public List<String> getRest() { 30 // return this.rest; 31 // } 32 public List<String> rest; 33 } 34 ArgsArityStringSetter args = new ArgsArityStringSetter(); 35 String[] argv = { "-pairs", "pair0", "pair1", "rest" }; 36 new JCommander(args, argv); 37 38 Assert.assertEquals(args.pairs.size(), 2); 39 Assert.assertEquals(args.pairs.get(0), "pair0"); 40 Assert.assertEquals(args.pairs.get(1), "pair1"); 41 Assert.assertEquals(args.rest.size(), 1); 42 Assert.assertEquals(args.rest.get(0), "rest"); 43 } 44 45 public void setterThatThrows() { 46 class Arg { 47 @Parameter(names = "--host") 48 public void setHost(String host) { 49 throw new ParameterException("Illegal host"); 50 } 51 } 52 boolean passed = false; 53 try { 54 new JCommander(new Arg(), new String[] { "--host", "host" }); 55 } catch(ParameterException ex) { 56 Assert.assertEquals(ex.getCause(), null); 57 passed = true; 58 } 59 Assert.assertTrue(passed, "Should have thrown an exception"); 60 } 61 62 public void getterReturningNonString() { 63 class Arg { 64 private Integer port; 65 66 @Parameter(names = "--port") 67 public void setPort(String port) { 68 this.port = Integer.parseInt(port); 69 } 70 71 public Integer getPort() { 72 return port; 73 } 74 } 75 Arg arg = new Arg(); 76 new JCommander(arg, new String[] { "--port", "42" }); 77 78 Assert.assertEquals(arg.port, new Integer(42)); 79 } 80 81 public void noGetterButWithField() { 82 class Arg { 83 private Integer port = 43; 84 85 @Parameter(names = "--port") 86 public void setPort(String port) { 87 this.port = Integer.parseInt(port); 88 } 89 } 90 Arg arg = new Arg(); 91 JCommander jc = new JCommander(arg, new String[] { "--port", "42" }); 92 ParameterDescription pd = jc.getParameters().get(0); 93 Assert.assertEquals(pd.getDefault(), 43); 94 } 95 96 @Test(enabled = false) 97 public static void main(String[] args) throws Exception { 98 new MethodSetterTest().noGetterButWithField(); 99 } 100 } 101
