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1
10 package org.apache.commons.cli;
11
12 import junit.framework.TestCase;
13 import junit.framework.TestSuite;
14
15 import java.io.ByteArrayOutputStream  ;
16 import java.io.PrintWriter ;
17 import java.io.StringWriter ;
18
19
25 public class TestHelpFormatter extends TestCase
26 {
27 public static void main( String [] args )
28 {
29 String [] testName = { TestHelpFormatter.class.getName() };
30 junit.textui.TestRunner.main(testName);
31 }
32
33 public static TestSuite suite()
34 {
35 return new TestSuite(TestHelpFormatter.class);
36 }
37
38 public TestHelpFormatter( String s )
39 {
40 super( s );
41 }
42
43 public void testFindWrapPos()
44 throws Exception
45 {
46 HelpFormatter hf = new HelpFormatter();
47
48 String text = "This is a test.";
49 assertEquals("wrap position", 7, hf.findWrapPos(text, 8, 0));
51 assertEquals("wrap position 2", -1, hf.findWrapPos(text, 8, 8));
53 text = "aaaa aa";
55 assertEquals("wrap position 3", 4, hf.findWrapPos(text, 3, 0));
56 }
57
58 public void testPrintWrapped()
59 throws Exception
60 {
61 StringBuffer sb = new StringBuffer ();
62 HelpFormatter hf = new HelpFormatter();
63
64 String text = "This is a test.";
65 String expected;
66
67 expected = "This is a" + hf.defaultNewLine + "test.";
68 hf.renderWrappedText(sb, 12, 0, text);
69 assertEquals("single line text", expected, sb.toString());
70
71 sb.setLength(0);
72 expected = "This is a" + hf.defaultNewLine + " test.";
73 hf.renderWrappedText(sb, 12, 4, text);
74 assertEquals("single line padded text", expected, sb.toString());
75
76 text =
77 "aaaa aaaa aaaa" + hf.defaultNewLine +
78 "aaaaaa" + hf.defaultNewLine +
79 "aaaaa";
80
81 expected = text;
82 sb.setLength(0);
83 hf.renderWrappedText(sb, 16, 0, text);
84 assertEquals("multi line text", expected, sb.toString());
85
86 expected =
87 "aaaa aaaa aaaa" + hf.defaultNewLine +
88 " aaaaaa" + hf.defaultNewLine +
89 " aaaaa";
90 sb.setLength(0);
91 hf.renderWrappedText(sb, 16, 4, text);
92 assertEquals("multi-line padded text", expected, sb.toString());
93 }
94
95 public void testPrintOptions()
96 throws Exception
97 {
98 StringBuffer sb = new StringBuffer ();
99 HelpFormatter hf = new HelpFormatter();
100 final int leftPad = 1;
101 final int descPad = 3;
102 final String lpad = hf.createPadding(leftPad);
103 final String dpad = hf.createPadding(descPad);
104 Options options = null;
105 String expected = null;
106
107 options = new Options().addOption("a", false, "aaaa aaaa aaaa aaaa aaaa");
108 expected = lpad + "-a" + dpad + "aaaa aaaa aaaa aaaa aaaa";
109 hf.renderOptions(sb, 60, options, leftPad, descPad);
110 assertEquals("simple non-wrapped option", expected, sb.toString());
111
112 int nextLineTabStop = leftPad+descPad+"-a".length();
113 expected =
114 lpad + "-a" + dpad + "aaaa aaaa aaaa" + hf.defaultNewLine +
115 hf.createPadding(nextLineTabStop) + "aaaa aaaa";
116 sb.setLength(0);
117 hf.renderOptions(sb, nextLineTabStop+17, options, leftPad, descPad);
118 assertEquals("simple wrapped option", expected, sb.toString());
119
120
121 options = new Options().addOption("a", "aaa", false, "dddd dddd dddd dddd");
122 expected = lpad + "-a,--aaa" + dpad + "dddd dddd dddd dddd";
123 sb.setLength(0);
124 hf.renderOptions(sb, 60, options, leftPad, descPad);
125 assertEquals("long non-wrapped option", expected, sb.toString());
126
127 nextLineTabStop = leftPad+descPad+"-a,--aaa".length();
128 expected =
129 lpad + "-a,--aaa" + dpad + "dddd dddd" + hf.defaultNewLine +
130 hf.createPadding(nextLineTabStop) + "dddd dddd";
131 sb.setLength(0);
132 hf.renderOptions(sb, 25, options, leftPad, descPad);
133 assertEquals("long wrapped option", expected, sb.toString());
134
135 options = new Options().
136 addOption("a", "aaa", false, "dddd dddd dddd dddd").
137 addOption("b", false, "feeee eeee eeee eeee");
138 expected =
139 lpad + "-a,--aaa" + dpad + "dddd dddd" + hf.defaultNewLine +
140 hf.createPadding(nextLineTabStop) + "dddd dddd" + hf.defaultNewLine +
141 lpad + "-b " + dpad + "feeee eeee" + hf.defaultNewLine +
142 hf.createPadding(nextLineTabStop) + "eeee eeee";
143 sb.setLength(0);
144 hf.renderOptions(sb, 25, options, leftPad, descPad);
145 assertEquals("multiple wrapped options", expected, sb.toString());
146 }
147
148 public void testAutomaticUsage()
149 throws Exception
150 {
151 HelpFormatter hf = new HelpFormatter();
152 Options options = null;
153 String expected = "usage: app [-a]";
154 ByteArrayOutputStream out = new ByteArrayOutputStream ( );
155 PrintWriter pw = new PrintWriter ( out );
156
157 options = new Options().addOption("a", false, "aaaa aaaa aaaa aaaa aaaa");
158 hf.printUsage( pw, 60, "app", options );
159 pw.flush();
160 assertEquals("simple auto usage", expected, out.toString().trim());
161 out.reset();
162
163 expected = "usage: app [-b] [-a]";
164 options = new Options().addOption("a", false, "aaaa aaaa aaaa aaaa aaaa")
165 .addOption("b", false, "bbb" );
166 hf.printUsage( pw, 60, "app", options );
167 pw.flush();
168 assertEquals("simple auto usage", expected, out.toString().trim());
169 out.reset();
170 }
171 }
172 |
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