LineNumberInputStreamTest.java revision 2ad60cfc28e14ee8f0bb038720836a4696c478ad 
1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17package tests.api.java.io;
18
19import java.io.BufferedInputStream;
20import java.io.ByteArrayInputStream;
21import java.io.IOException;
22import java.io.LineNumberInputStream;
23
24public class LineNumberInputStreamTest extends junit.framework.TestCase {
25
26	String text = "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n146\n147\n148\n149\n150\n151\n152\n153\n154\n155\n156\n157\n158\n159\n160\n161\n162\n163\n164\n165\n166\n167\n168\n169\n170\n171\n172\n173\n174\n175\n176\n177\n178\n179\n180\n181\n182\n183\n184\n185\n186\n187\n188\n189\n190\n191\n192\n193\n194\n195\n196\n197\n198\n199\n200\n201\n202\n203\n204\n205\n206\n207\n208\n209\n210\n211\n212\n213\n214\n215\n216\n217\n218\n219\n220\n221\n222\n223\n224\n225\n226\n227\n228\n229\n230\n231\n232\n233\n234\n235\n236\n237\n238\n239\n240\n241\n242\n243\n244\n245\n246\n247\n248\n249\n250\n251\n252\n253\n254\n255\n256\n257\n258\n259\n260\n261\n262\n263\n264\n265\n266\n267\n268\n269\n270\n271\n272\n273\n274\n275\n276\n277\n278\n279\n280\n281\n282\n283\n284\n285\n286\n287\n288\n289\n290\n291\n292\n293\n294\n295\n296\n297\n298\n299\n300\n301\n302\n303\n304\n305\n306\n307\n308\n309\n310\n311\n312\n313\n314\n315\n316\n317\n318\n319\n320\n321\n322\n323\n324\n325\n326\n327\n328\n329\n330\n331\n332\n333\n334\n335\n336\n337\n338\n339\n340\n341\n342\n343\n344\n345\n346\n347\n348\n349\n350\n351\n352\n353\n354\n355\n356\n357\n358\n359\n360\n361\n362\n363\n364\n365\n366\n367\n368\n369\n370\n371\n372\n373\n374\n375\n376\n377\n378\n379\n380\n381\n382\n383\n384\n385\n386\n387\n388\n389\n390\n391\n392\n393\n394\n395\n396\n397\n398\n399\n400\n401\n402\n403\n404\n405\n406\n407\n408\n409\n410\n411\n412\n413\n414\n415\n416\n417\n418\n419\n420\n421\n422\n423\n424\n425\n426\n427\n428\n429\n430\n431\n432\n433\n434\n435\n436\n437\n438\n439\n440\n441\n442\n443\n444\n445\n446\n447\n448\n449\n450\n451\n452\n453\n454\n455\n456\n457\n458\n459\n460\n461\n462\n463\n464\n465\n466\n467\n468\n469\n470\n471\n472\n473\n474\n475\n476\n477\n478\n479\n480\n481\n482\n483\n484\n485\n486\n487\n488\n489\n490\n491\n492\n493\n494\n495\n496\n497\n498\n499\n500\n501";
27
28	String dosText = "0\r\n1\r\n2";
29
30	LineNumberInputStream lnis;
31
32	LineNumberInputStream lnis2;
33
34	/**
35	 * @tests java.io.LineNumberInputStream#LineNumberInputStream(java.io.InputStream)
36	 */
37	public void test_ConstructorLjava_io_InputStream() {
38		// Test for method java.io.LineNumberInputStream(java.io.InputStream)
39		// Used in other tests
40	}
41
42	/**
43	 * @tests java.io.LineNumberInputStream#available()
44	 */
45	public void test_available() {
46		// Test for method int java.io.LineNumberInputStream.available()
47		try {
48			assertTrue("Returned incorrect number of available bytes", lnis
49					.available() == text.length() / 2);
50		} catch (IOException e) {
51			fail("Exception during available test: " + e.toString());
52		}
53	}
54
55	/**
56	 * @tests java.io.LineNumberInputStream#getLineNumber()
57	 */
58	public void test_getLineNumber() {
59		// Test for method int java.io.LineNumberInputStream.getLineNumber()
60		assertEquals("New stream returned line number other than zero", 0, lnis
61				.getLineNumber());
62		try {
63			lnis.read();
64			lnis.read();
65		} catch (IOException e) {
66			fail("Exception during getLineNumber test : " + e.getMessage());
67		}
68		assertEquals("stream returned incorrect line number after read", 1, lnis
69				.getLineNumber());
70		lnis.setLineNumber(89);
71		assertEquals("stream returned incorrect line number after set", 89, lnis
72				.getLineNumber());
73	}
74
75	/**
76	 * @tests java.io.LineNumberInputStream#mark(int)
77	 */
78	public void test_markI() {
79		// Test for method void java.io.LineNumberInputStream.mark(int)
80		try {
81			lnis.mark(40);
82			lnis.skip(4);
83			lnis.reset();
84			assertEquals("Failed to mark", 0, lnis.getLineNumber());
85			assertEquals("Failed to mark", '0', lnis.read());
86		} catch (IOException e) {
87			fail("Exception during mark test : " + e.getMessage());
88		}
89	}
90
91	/**
92	 * @tests java.io.LineNumberInputStream#read()
93	 */
94	public void test_read() {
95		// Test for method int java.io.LineNumberInputStream.read()
96		try {
97			assertEquals("Failed to read correct byte", '0', lnis.read());
98			assertEquals("Failed to read correct byte on dos text",
99					'0', lnis2.read());
100			assertTrue("Failed to read correct byte on dos text",
101					lnis2.read() == '\n');
102			assertEquals("Failed to read correct byte on dos text",
103					'1', lnis2.read());
104			assertTrue("Failed to read correct byte on dos text",
105					lnis2.read() == '\n');
106			assertEquals("Failed to read correct byte on dos text",
107					'2', lnis2.read());
108		} catch (IOException e) {
109			fail("Exception during read test : " + e.getMessage());
110		}
111	}
112
113	/**
114	 * @tests java.io.LineNumberInputStream#read(byte[], int, int)
115	 */
116	public void test_read$BII() {
117		// Test for method int java.io.LineNumberInputStream.read(byte [], int,
118		// int)
119		try {
120			byte[] buf = new byte[100];
121			lnis.read(buf, 0, 100);
122			assertTrue("Failed to read correct bytes on normal text",
123					new String(buf, 0, 100).equals(text.substring(0, 100)));
124		} catch (IOException e) {
125			fail("Exception during mark test : " + e.getMessage());
126		}
127	}
128
129	/**
130	 * @tests java.io.LineNumberInputStream#reset()
131	 */
132	public void test_reset() {
133		// Test for method void java.io.LineNumberInputStream.reset()
134
135		try {
136			lnis.mark(40);
137			lnis.skip(4);
138			lnis.reset();
139			assertEquals("Failed to reset", 0, lnis.getLineNumber());
140			assertEquals("Failed to reset", '0', lnis.read());
141			lnis.reset();
142		} catch (IOException e) {
143			fail("Exception during mark test : " + e.getMessage());
144		}
145		// see comment for setup
146		try {
147			lnis.mark(5);
148			lnis.skip(100);
149			lnis.reset();
150		} catch (IOException e) {
151			// Correct mark has been invalidated
152			return;
153		}
154		fail("Failed to invalidate mark");
155	}
156
157	/**
158	 * @tests java.io.LineNumberInputStream#setLineNumber(int)
159	 */
160	public void test_setLineNumberI() {
161		// Test for method void java.io.LineNumberInputStream.setLineNumber(int)
162		lnis.setLineNumber(89);
163		assertEquals("Failed to set line number", 89, lnis.getLineNumber());
164	}
165
166	/**
167	 * @tests java.io.LineNumberInputStream#skip(long)
168	 */
169	public void test_skipJ() {
170		// Test for method long java.io.LineNumberInputStream.skip(long)
171		try {
172			lnis.skip(4);
173			assertEquals("Skip failed to increment lineNumber", 2, lnis
174					.getLineNumber());
175		} catch (IOException e) {
176			fail("Exception during skip test : " + e.getMessage());
177		}
178	}
179
180	/**
181	 * Sets up the fixture, for example, open a network connection. This method
182	 * is called before a test is executed.
183	 */
184	protected void setUp() {
185		/*
186		 * In order for IOException to be thrown in reset(),the inputStream to
187		 * the constructor cannot be a byteArrayInputstream because the reset()
188		 * in byteArrayInputStream does not throw IOException. When
189		 * BufferedInputStream is used, the size of the buffer must be smaller
190		 * than the readlimit in mark inorder for IOException to be thrown
191		 */
192		BufferedInputStream buftemp = new BufferedInputStream(
193				new ByteArrayInputStream(text.getBytes()), 4);
194		lnis = new LineNumberInputStream(buftemp);
195		lnis2 = new LineNumberInputStream(new ByteArrayInputStream(dosText
196				.getBytes()));
197	}
198
199	/**
200	 * Tears down the fixture, for example, close a network connection. This
201	 * method is called after a test is executed.
202	 */
203	protected void tearDown() {
204	}
205}
206