Source Code Cross Referenced for PushbackReaderTest.java in  » Apache-Harmony-Java-SE » org-package » org » apache » harmony » luni » tests » java » io » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Apache Harmony Java SE » org package » org.apache.harmony.luni.tests.java.io 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  Licensed to the Apache Software Foundation (ASF) under one or more
003:         *  contributor license agreements.  See the NOTICE file distributed with
004:         *  this work for additional information regarding copyright ownership.
005:         *  The ASF licenses this file to You under the Apache License, Version 2.0
006:         *  (the "License"); you may not use this file except in compliance with
007:         *  the License.  You may obtain a copy of the License at
008:         *
009:         *     http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         *  Unless required by applicable law or agreed to in writing, software
012:         *  distributed under the License is distributed on an "AS IS" BASIS,
013:         *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         *  See the License for the specific language governing permissions and
015:         *  limitations under the License.
016:         */
017:
018:        package org.apache.harmony.luni.tests.java.io;
019:
020:        import java.io.CharArrayReader;
021:        import java.io.FilterReader;
022:        import java.io.IOException;
023:        import java.io.PushbackReader;
024:        import java.io.Reader;
025:        import java.io.StringReader;
026:
027:        public class PushbackReaderTest extends junit.framework.TestCase {
028:
029:            PushbackReader pbr;
030:
031:            String pbString = "Hello World";
032:
033:            /**
034:             * @tests java.io.PushbackReader#PushbackReader(java.io.Reader)
035:             */
036:            public void test_ConstructorLjava_io_Reader() {
037:                // Test for method java.io.PushbackReader(java.io.Reader)
038:                try {
039:                    pbr.close();
040:                    pbr = new PushbackReader(new StringReader(pbString));
041:                    char buf[] = new char[5];
042:                    pbr.read(buf, 0, 5);
043:                    pbr.unread(buf);
044:                } catch (IOException e) {
045:                    // Correct
046:                    return;
047:                }
048:                fail("Created reader with buffer larger than 1");
049:            }
050:
051:            /**
052:             * @tests java.io.PushbackReader#PushbackReader(java.io.Reader, int)
053:             */
054:            public void test_ConstructorLjava_io_ReaderI() {
055:                // Test for method java.io.PushbackReader(java.io.Reader, int)
056:                assertTrue("Used to test", true);
057:            }
058:
059:            /**
060:             * @tests java.io.PushbackReader#close()
061:             */
062:            public void test_close() {
063:                // Test for method void java.io.PushbackReader.close()
064:                try {
065:                    pbr.close();
066:                    pbr.read();
067:                } catch (Exception e) {
068:                    return;
069:                }
070:                fail("Failed to throw exception reading from closed reader");
071:            }
072:
073:            /**
074:             * @tests java.io.PushbackReader#mark(int)
075:             */
076:            public void test_markI() {
077:                try {
078:                    pbr.mark(3);
079:                } catch (IOException e) {
080:                    // correct
081:                    return;
082:                }
083:                fail("mark failed to throw expected IOException");
084:            }
085:
086:            /**
087:             * @tests java.io.PushbackReader#markSupported()
088:             */
089:            public void test_markSupported() {
090:                // Test for method boolean java.io.PushbackReader.markSupported()
091:                assertTrue("markSupported returned true", !pbr.markSupported());
092:            }
093:
094:            /**
095:             * @tests java.io.PushbackReader#read()
096:             */
097:            public void test_read() {
098:                // Test for method int java.io.PushbackReader.read()
099:                try {
100:                    char c;
101:                    pbr.read();
102:                    c = (char) pbr.read();
103:                    assertTrue("Failed to read char: " + c, c == pbString
104:                            .charAt(1));
105:                    Reader reader = new PushbackReader(new CharArrayReader(
106:                            new char[] { '\u8765' }));
107:                    assertTrue("Wrong double byte character",
108:                            reader.read() == '\u8765');
109:                } catch (IOException e) {
110:                    fail("IOException during read test : " + e.getMessage());
111:                }
112:            }
113:
114:            /**
115:             * @tests java.io.PushbackReader#read(char[], int, int)
116:             */
117:            public void test_read$CII() {
118:                // Test for method int java.io.PushbackReader.read(char [], int, int)
119:                try {
120:                    char[] c = new char[5];
121:                    pbr.read(c, 0, 5);
122:                    assertTrue("Failed to read chars", new String(c)
123:                            .equals(pbString.substring(0, 5)));
124:                } catch (IOException e) {
125:                    fail("IOException during read test : " + e.getMessage());
126:                }
127:            }
128:
129:            /**
130:             * @tests java.io.PushbackReader#read(char[], int, int)
131:             */
132:            public void test_read_$CII_Exception() throws IOException {
133:                pbr = new PushbackReader(new StringReader(pbString), 10);
134:
135:                char[] nullCharArray = null;
136:                char[] charArray = new char[10];
137:
138:                try {
139:                    pbr.read(nullCharArray, -1, -1);
140:                    fail("should throw IndexOutOfBoundsException");
141:                } catch (IndexOutOfBoundsException e) {
142:                    // expected
143:                }
144:
145:                try {
146:                    pbr.read(nullCharArray, 1, 0);
147:                    fail("should throw NullPointerException");
148:                } catch (NullPointerException e) {
149:                    // expected
150:                }
151:
152:                try {
153:                    pbr.read(charArray, -1, -1);
154:                    fail("should throw IndexOutOfBoundsException");
155:                } catch (IndexOutOfBoundsException e) {
156:                    // expected
157:                }
158:
159:                pbr.read(charArray, 0, 0);
160:                pbr.read(charArray, 0, charArray.length);
161:                pbr.read(charArray, charArray.length, 0);
162:
163:                try {
164:                    pbr.read(charArray, charArray.length + 1, 0);
165:                    fail("should throw IndexOutOfBoundsException");
166:                } catch (IndexOutOfBoundsException e) {
167:                    //expected
168:                }
169:
170:                try {
171:                    pbr.read(charArray, charArray.length + 1, 1);
172:                    fail("should throw IndexOutOfBoundsException");
173:                } catch (IndexOutOfBoundsException e) {
174:                    //expected
175:                }
176:
177:                pbr.close();
178:
179:                try {
180:                    pbr.read(nullCharArray, -1, -1);
181:                    fail("should throw IOException");
182:                } catch (IOException e) {
183:                    // expected
184:                }
185:
186:                try {
187:                    pbr.read(charArray, -1, -1);
188:                    fail("should throw IOException");
189:                } catch (IOException e) {
190:                    // expected
191:                }
192:            }
193:
194:            /**
195:             * @tests java.io.PushbackReader#ready()
196:             */
197:            public void test_ready() {
198:                // Test for method boolean java.io.PushbackReader.ready()
199:                try {
200:                    char[] c = new char[11];
201:                    if (c.length > 0)
202:                        ;// use c to avoid warning msg
203:                    assertTrue("Ready stream returned false to ready()", pbr
204:                            .ready());
205:                } catch (IOException e) {
206:                    fail("IOException during ready() test : " + e.getMessage());
207:                }
208:            }
209:
210:            /**
211:             * @tests java.io.PushbackReader#reset()
212:             */
213:            public void test_reset() {
214:                try {
215:                    pbr.reset();
216:                } catch (IOException e) {
217:                    // correct
218:                    return;
219:                }
220:                fail("mark failed to throw expected IOException");
221:            }
222:
223:            /**
224:             * @tests java.io.PushbackReader#unread(char[])
225:             */
226:            public void test_unread$C() {
227:                // Test for method void java.io.PushbackReader.unread(char [])
228:                try {
229:                    char[] c = new char[5];
230:                    pbr.read(c, 0, 5);
231:                    pbr.unread(c);
232:                    pbr.read(c, 0, 5);
233:                    assertTrue("Failed to unread chars", new String(c)
234:                            .equals(pbString.substring(0, 5)));
235:                } catch (IOException e) {
236:                    fail("IOException during read test : " + e.getMessage());
237:                }
238:            }
239:
240:            /**
241:             * @tests java.io.PushbackReader#skip(long)
242:             */
243:            public void test_skip$J() {
244:                char chars[] = new char[] { 'h', 'e', 'l', 'l', 'o' };
245:                for (int i = 0; i < 3; i++) {
246:                    Reader reader, reader2;
247:                    switch (i) {
248:                    case 0:
249:                        reader = new StringReader(new String(chars));
250:                        reader2 = new StringReader(new String(chars));
251:                        break;
252:                    case 1:
253:                        reader = new FilterReader(new StringReader(new String(
254:                                chars))) {
255:                        };
256:                        reader2 = new FilterReader(new StringReader(new String(
257:                                chars))) {
258:                        };
259:                        break;
260:                    default:
261:                        reader = new CharArrayReader(chars);
262:                        reader2 = new CharArrayReader(chars);
263:                    }
264:                    PushbackReader pReader = new PushbackReader(reader, 2);
265:                    PushbackReader pReader2 = new PushbackReader(reader2, 2);
266:                    boolean skipped = false;
267:                    long numSkipped = 0;
268:                    try {
269:                        numSkipped = pReader2.skip(3);
270:                        pReader2.unread('a');
271:                        pReader2.unread('b');
272:                        numSkipped += pReader2.skip(10);
273:                        numSkipped += pReader2.skip(10);
274:                        numSkipped += pReader2.skip(10);
275:                        numSkipped += pReader2.skip(10);
276:                        numSkipped += pReader2.skip(10);
277:                        numSkipped += pReader2.skip(10);
278:                        assertEquals(
279:                                "Did not skip correct number of characters", 7,
280:                                numSkipped);
281:                        numSkipped = 0;
282:                        numSkipped += pReader.skip(2);
283:                        pReader.unread('i');
284:                        numSkipped += pReader.skip(2);
285:                        numSkipped += pReader.skip(0);
286:                        skipped = true;
287:                        numSkipped += pReader.skip(-1);
288:                        fail("Failed to throw "
289:                                + new IllegalArgumentException().getClass()
290:                                        .getName());
291:                    } catch (IllegalArgumentException e) {
292:                        assertTrue("Failed to skip characters" + e, skipped);
293:                    } catch (IOException e) {
294:                        fail("Failed to skip characters" + e);
295:                    }
296:                    try {
297:                        numSkipped += pReader.skip(1);
298:                        numSkipped += pReader.skip(1);
299:                        numSkipped += pReader.skip(1);
300:                        assertEquals("Failed to skip all characters", 6,
301:                                numSkipped);
302:                        long nextSkipped = pReader.skip(1);
303:                        assertEquals("skipped empty reader", 0, nextSkipped);
304:                    } catch (IOException e) {
305:                        fail("Failed to skip more characters" + e);
306:                    }
307:                }
308:            }
309:
310:            /**
311:             * @tests java.io.PushbackReader#unread(char[], int, int)
312:             */
313:            public void test_unread$CII() {
314:                // Test for method void java.io.PushbackReader.unread(char [], int, int)
315:                try {
316:                    char[] c = new char[5];
317:                    pbr.read(c, 0, 5);
318:                    pbr.unread(c, 0, 2);
319:                    pbr.read(c, 0, 5);
320:                    assertTrue("Failed to unread chars", new String(c)
321:                            .equals(pbString.substring(0, 2)
322:                                    + pbString.substring(5, 8)));
323:                } catch (IOException e) {
324:                    fail("IOException during unread test : " + e.getMessage());
325:                }
326:            }
327:
328:            /**
329:             * @tests java.io.PushbackReader#unread(char[], int, int)
330:             */
331:            public void test_unread_$CII_NullPointerException()
332:                    throws IOException {
333:                //a pushback reader with one character buffer
334:                pbr = new PushbackReader(new StringReader(pbString));
335:
336:                try {
337:                    pbr.unread(null, 0, 1);
338:                    fail("should throw NullPointerException");
339:                } catch (NullPointerException e) {
340:                    // expected
341:                }
342:            }
343:
344:            /**
345:             * @tests java.io.PushbackReader#unread(char[], int, int)
346:             */
347:            public void test_unread_$CII_Exception_InsufficientBuffer()
348:                    throws IOException {
349:                //a pushback reader with one character buffer
350:                pbr = new PushbackReader(new StringReader(pbString));
351:
352:                //if count > buffer's size , should throw IOException
353:                try {
354:                    pbr.unread(new char[pbString.length()], 0, 2);
355:                    fail("should throw IOException");
356:                } catch (IOException e) {
357:                    // expected
358:                }
359:            }
360:
361:            /**
362:             * @tests java.io.PushbackReader#unread(char[], int, int)
363:             */
364:            public void test_unread_$CII_ArrayIndexOutOfBoundsException()
365:                    throws IOException {
366:                //a pushback reader with one character buffer
367:                pbr = new PushbackReader(new StringReader(pbString));
368:
369:                try {
370:                    pbr.unread(new char[pbString.length()], -1, -1);
371:                    fail("should throw ArrayIndexOutOfBoundsException");
372:                } catch (ArrayIndexOutOfBoundsException e) {
373:                    // expected
374:                }
375:            }
376:
377:            /**
378:             * @tests java.io.PushbackReader#unread(int)
379:             */
380:            public void test_unreadI() {
381:                // Test for method void java.io.PushbackReader.unread(int)
382:
383:                try {
384:                    int c;
385:                    pbr.read();
386:                    c = pbr.read();
387:                    pbr.unread(c);
388:                    assertTrue("Failed to unread char", pbr.read() == c);
389:                } catch (IOException e) {
390:                    fail("IOException during unread test : " + e.getMessage());
391:                }
392:            }
393:
394:            /**
395:             * Sets up the fixture, for example, open a network connection. This method
396:             * is called before a test is executed.
397:             */
398:            protected void setUp() {
399:                pbr = new PushbackReader(new StringReader(pbString), 10);
400:            }
401:
402:            /**
403:             * Tears down the fixture, for example, close a network connection. This
404:             * method is called after a test is executed.
405:             */
406:            protected void tearDown() {
407:                try {
408:                    pbr.close();
409:                } catch (IOException e) {
410:                }
411:            }
412:        }
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