Source Code Cross Referenced for IndentHelperTest.java in  » IDE » DrJava » edu » rice » cs » drjava » model » definitions » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE » DrJava » edu.rice.cs.drjava.model.definitions 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*BEGIN_COPYRIGHT_BLOCK
002:         *
003:         * Copyright (c) 2001-2007, JavaPLT group at Rice University (javaplt@rice.edu)
004:         * All rights reserved.
005:         * 
006:         * Redistribution and use in source and binary forms, with or without
007:         * modification, are permitted provided that the following conditions are met:
008:         *    * Redistributions of source code must retain the above copyright
009:         *      notice, this list of conditions and the following disclaimer.
010:         *    * Redistributions in binary form must reproduce the above copyright
011:         *      notice, this list of conditions and the following disclaimer in the
012:         *      documentation and/or other materials provided with the distribution.
013:         *    * Neither the names of DrJava, the JavaPLT group, Rice University, nor the
014:         *      names of its contributors may be used to endorse or promote products
015:         *      derived from this software without specific prior written permission.
016:         * 
017:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
018:         * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
019:         * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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033:         * from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/
034:         * 
035:         * END_COPYRIGHT_BLOCK*/
036:
037:        package edu.rice.cs.drjava.model.definitions;
038:
039:        import javax.swing.text.BadLocationException;
040:        import edu.rice.cs.drjava.model.definitions.indent.IndentRulesTestCase;
041:
042:        /**
043:         * Tests for the helper methods in DefinitionsDocument
044:         * @version $Id: IndentHelperTest.java 4255 2007-08-28 19:17:37Z mgricken $
045:         */
046:        public final class IndentHelperTest extends IndentRulesTestCase {
047:
048:            /** Tests findPrevDelimiter() */
049:            public void testFindPrevDelimiter() throws BadLocationException {
050:                char[] delimiters1 = { ';', ':', '?' };
051:
052:                // Used to test for delimiters not in test string
053:                char[] delimiters2 = { '%' };
054:
055:                // Used to test if delimiter right after DOCSTART is found
056:                char[] delimiters3 = { 'f' };
057:
058:                // Used to test finding delimiters that can be confused with comments
059:                char[] delimiters4 = { '/', '*' };
060:
061:                _setDocText("/*bar;\nfoo();\nx;*/\nreturn foo;\n");
062:                assertEquals("Check that delimiters in multi-line "
063:                        + "comments are ignored",
064:                        DefinitionsDocument.ERROR_INDEX, _doc
065:                                .findPrevDelimiter(23, delimiters1));
066:
067:                _setDocText("foo();\n//bar();\nbiz();\n");
068:                assertEquals("Check that delimiters in single-line "
069:                        + "comments are ignored", 5, _doc.findPrevDelimiter(16,
070:                        delimiters1));
071:
072:                _setDocText("x=';'\n");
073:                assertEquals("Check that delimiters in single-quotes "
074:                        + "are ignored", DefinitionsDocument.ERROR_INDEX, _doc
075:                        .findPrevDelimiter(5, delimiters1));
076:
077:                _setDocText("x=\";\"\n");
078:                assertEquals("Check that delimiters in double-quotes "
079:                        + "are ignored", DefinitionsDocument.ERROR_INDEX, _doc
080:                        .findPrevDelimiter(5, delimiters1));
081:
082:                _setDocText("foo();\nfor(;;)\n");
083:                assertEquals("Check that delimiters in paren phrases "
084:                        + "are usually ignored", 5, _doc.findPrevDelimiter(14,
085:                        delimiters1));
086:
087:                _setDocText("foo();\nfor(;;)\n");
088:                assertEquals("Check that delimiters in paren phrases "
089:                        + "can be detected", 12, _doc.findPrevDelimiter(14,
090:                        delimiters1, false));
091:
092:                _setDocText("foo();\n test ? x : y;\n\t    return blah();\n");
093:                assertEquals(
094:                        "Check that ERROR_INDEX is returned if no matching character is found",
095:                        DefinitionsDocument.ERROR_INDEX, _doc
096:                                .findPrevDelimiter(20, delimiters2));
097:                assertEquals(
098:                        "Check that delimiter is found if it is right after DOCSTART",
099:                        0, _doc.findPrevDelimiter(20, delimiters3));
100:                assertEquals("Check that delimiter is not found if "
101:                        + "it is at cursor's position",
102:                        DefinitionsDocument.ERROR_INDEX, _doc
103:                                .findPrevDelimiter(5, delimiters1));
104:                assertEquals(
105:                        "Check that the first delimiter in the list is found",
106:                        17, _doc.findPrevDelimiter(19, delimiters1));
107:                assertEquals(
108:                        "Check that the second delimiter in the list is found",
109:                        13, _doc.findPrevDelimiter(17, delimiters1));
110:                assertEquals(
111:                        "Check that the last delimiter in the list is found",
112:                        5, _doc.findPrevDelimiter(13, delimiters1));
113:
114:                _setDocText("foo *\n" + "// comment\n" + "bar\n");
115:                assertEquals(
116:                        "Check that findprevDelimiter ignores comments even"
117:                                + "when delimiters include * and / (1)", 4,
118:                        _doc.findPrevDelimiter(17, delimiters4));
119:                _setDocText("foo /\n" + "/* comment */\n" + "bar\n");
120:                assertEquals(
121:                        "Check that findprevDelimiter ignores comments even"
122:                                + "when delimiters include * and / (2)", 4,
123:                        _doc.findPrevDelimiter(17, delimiters4));
124:
125:                _setDocText("abcdefghijk");
126:                _doc.setCurrentLocation(3);
127:                int reducedModelPos = _doc.getReduced().absOffset();
128:                _doc.findPrevDelimiter(8, delimiters2);
129:                assertEquals(
130:                        "Check that position in reduced model is unaffected "
131:                                + "after call to findPrevDelimiter",
132:                        reducedModelPos, _doc.getReduced().absOffset());
133:
134:            }
135:
136:            public void testPosInParenPhrase() throws BadLocationException {
137:
138:                _setDocText("(;)");
139:                assertEquals("';' in parent phrase", true, _doc
140:                        .posInParenPhrase(1));
141:
142:                _setDocText("abcdefghijk");
143:                _doc.setCurrentLocation(3);
144:                int reducedModelPos = _doc.getReduced().absOffset();
145:                _doc.posInParenPhrase(8);
146:                assertEquals(
147:                        "Check that position in reduced model is unaffected "
148:                                + "after call to posInParenPhrase",
149:                        reducedModelPos, _doc.getReduced().absOffset());
150:            }
151:
152:            public void testGetIndentOfCurrStmtDelimiters()
153:                    throws BadLocationException {
154:
155:                _setDocText("foo();\n");
156:                assertEquals("prev delimiter DOCSTART, no indent", "", _doc
157:                        .getIndentOfCurrStmt(3));
158:                _setDocText("  foo();\n");
159:                assertEquals("prev delimiter DOCSTART, indent two spaces",
160:                        "  ", _doc.getIndentOfCurrStmt(7));
161:
162:                _setDocText("bar();\nfoo();\n");
163:                assertEquals("prev delimiter ';', no indent", "", _doc
164:                        .getIndentOfCurrStmt(7));
165:                _setDocText("  bar();\n  foo();\n");
166:                assertEquals("prev delimiter ';', indent two spaces", "  ",
167:                        _doc.getIndentOfCurrStmt(9));
168:
169:                _setDocText("void bar()\n{\nfoo();\n");
170:                assertEquals("prev delimiter '{', no indent", "", _doc
171:                        .getIndentOfCurrStmt(13));
172:                _setDocText("void bar()\n{\n  foo();\n");
173:                assertEquals("prev delimiter '{', indent two spaces", "  ",
174:                        _doc.getIndentOfCurrStmt(13));
175:
176:                _setDocText("}\nfoo();\n");
177:                assertEquals("prev delimiter '}', no indent", "", _doc
178:                        .getIndentOfCurrStmt(2));
179:                _setDocText("}\n  foo();\n");
180:                assertEquals("prev delimiter '}', indent two spaces", "  ",
181:                        _doc.getIndentOfCurrStmt(2));
182:            }
183:
184:            public void testGetIndentOfCurrStmtDelimiterSameLine()
185:                    throws BadLocationException {
186:
187:                _setDocText("bar(); foo();\n");
188:                assertEquals("prev delimiter on same line, no indent", "", _doc
189:                        .getIndentOfCurrStmt(6));
190:
191:                _setDocText("  bar(); foo();\n");
192:                assertEquals("prev delimiter on same line, indent two spaces",
193:                        "  ", _doc.getIndentOfCurrStmt(8));
194:            }
195:
196:            public void testGetIndentOfCurrStmtMultipleLines()
197:                    throws BadLocationException {
198:
199:                String text = "  oogabooga();\n" + "  bar().\n"
200:                        + "    bump().\n" + "    //comment\n"
201:                        + "    /*commment\n" + "     *again;{}\n" + "     */\n"
202:                        + "     foo();\n";
203:
204:                _setDocText(text);
205:                assertEquals("start stmt on previous line, indent two spaces",
206:                        "  ", _doc.getIndentOfCurrStmt(24));
207:                assertEquals("start stmt before previous line, "
208:                        + "cursor inside single-line comment "
209:                        + "indent two spaces", "  ", _doc
210:                        .getIndentOfCurrStmt(42));
211:                assertEquals("start stmt before single-line comment, "
212:                        + "cursor inside multi-line comment "
213:                        + "indent two spaces", "  ", _doc
214:                        .getIndentOfCurrStmt(56));
215:                assertEquals("start stmt before multi-line comment, "
216:                        + "indent two spaces", "  ", _doc
217:                        .getIndentOfCurrStmt(88));
218:            }
219:
220:            public void testGetIndentOfCurrStmtIgnoreDelimsInParenPhrase()
221:                    throws BadLocationException {
222:
223:                String text = "  bar.\n (;)\nfoo();";
224:
225:                _setDocText(text);
226:                assertEquals("ignores delimiter in paren phrase", "  ", _doc
227:                        .getIndentOfCurrStmt(12));
228:            }
229:
230:            public void testGetIndentOfCurrStmtEndOfDoc()
231:                    throws BadLocationException {
232:
233:                _setDocText("foo.\n");
234:                assertEquals("cursor at end of document, no indent", "", _doc
235:                        .getIndentOfCurrStmt(5));
236:
237:            }
238:
239:            public void testGetLineStartPos() throws BadLocationException {
240:                _setDocText("foo\nbar\nblah");
241:                assertEquals("Returns position after the previous newline", 4,
242:                        _doc.getLineStartPos(6));
243:                assertEquals(
244:                        "Returns position after previous newline when cursor "
245:                                + "is at the position after the previous newline",
246:                        4, _doc.getLineStartPos(4));
247:                assertEquals(
248:                        "Returns DOCSTART when there's no previous newline", 0,
249:                        _doc.getLineStartPos(2));
250:                assertEquals("Returns DOCSTART when the cursor is at DOCSTART",
251:                        0, _doc.getLineStartPos(0));
252:
253:                _setDocText("abcdefghijk");
254:                _doc.setCurrentLocation(3);
255:                int reducedModelPos = _doc.getReduced().absOffset();
256:                _doc.getLineStartPos(5);
257:                assertEquals(
258:                        "Check that position in reduced model is unaffected "
259:                                + "after call to getLineStartPos",
260:                        reducedModelPos, _doc.getReduced().absOffset());
261:            }
262:
263:            public void testGetLineEndPos() throws BadLocationException {
264:                _setDocText("foo\nbar\nblah");
265:                assertEquals("Returns position before the next newline", 7,
266:                        _doc.getLineEndPos(5));
267:                assertEquals(
268:                        "Returns position before the next newline when cursor "
269:                                + "is at the position before the next newline",
270:                        7, _doc.getLineEndPos(7));
271:                assertEquals(
272:                        "Returns the end of the document when there's no next newline",
273:                        12, _doc.getLineEndPos(9));
274:
275:                _setDocText("abcdefghijk");
276:                _doc.setCurrentLocation(3);
277:                int reducedModelPos = _doc.getReduced().absOffset();
278:                _doc.getLineEndPos(5);
279:                assertEquals(
280:                        "Check that position in reduced model is unaffected "
281:                                + "after call to getLineEndPos",
282:                        reducedModelPos, _doc.getReduced().absOffset());
283:            }
284:
285:            public void testGetLineFirstCharPos() throws BadLocationException {
286:                _setDocText("   ");
287:                assertEquals("Returns the end of the document if the line "
288:                        + "is the last line in the document and has no "
289:                        + "non-whitespace characters", 3, _doc
290:                        .getLineFirstCharPos(1));
291:
292:                _setDocText("   \nfoo();\n");
293:                assertEquals("Returns the next newline if there are "
294:                        + "no non-whitespace characters on the line", 3, _doc
295:                        .getLineFirstCharPos(1));
296:
297:                _setDocText("foo();\n   \t  bar();\nbiz()\n");
298:                assertEquals(
299:                        "Returns first non-whitespace character on the line "
300:                                + "when position is at the start of the line",
301:                        13, _doc.getLineFirstCharPos(7));
302:                assertEquals(
303:                        "Returns first non-whitespace character on the line "
304:                                + "when the position is after the first non-ws character "
305:                                + "on the line", 13, _doc
306:                                .getLineFirstCharPos(16));
307:                assertEquals(
308:                        "Returns first non-whitespace character on the line "
309:                                + "when the position is at the newline", 13,
310:                        _doc.getLineFirstCharPos(19));
311:
312:                _setDocText("abcdefghijk");
313:                _doc.setCurrentLocation(3);
314:                int reducedModelPos = _doc.getReduced().absOffset();
315:                _doc.getLineFirstCharPos(5);
316:                assertEquals(
317:                        "Check that position in reduced model is unaffected "
318:                                + "after call to getLineFirstCharPos",
319:                        reducedModelPos, _doc.getReduced().absOffset());
320:            }
321:
322:            public void testGetFirstNonWSCharPos() throws BadLocationException {
323:
324:                _setDocText("foo();\nbar()\tx();     y();\n  \t  \n\nz();\n ");
325:                assertEquals("Current position is non-whitespace", 0, _doc
326:                        .getFirstNonWSCharPos(0));
327:                assertEquals("Current position is non-whitespace, end of line",
328:                        5, _doc.getFirstNonWSCharPos(5));
329:                assertEquals("Next non-whitespace is 1 '\\n' ahead.", 7, _doc
330:                        .getFirstNonWSCharPos(6));
331:                assertEquals("Next non-whitespace is 2 '\\t' ahead.", 13, _doc
332:                        .getFirstNonWSCharPos(12));
333:                assertEquals("Next non-whitespace is 3 spaces ahead.", 22, _doc
334:                        .getFirstNonWSCharPos(20));
335:                assertEquals(
336:                        "Next non-whitespace is multiple whitespaces ('\\n', '\\t', ' ') ahead.",
337:                        34, _doc.getFirstNonWSCharPos(27));
338:                assertEquals("Next non-whitespace is end of document", -1, _doc
339:                        .getFirstNonWSCharPos(39));
340:
341:                _setDocText("foo();\n// comment\nbar();\n");
342:                assertEquals("Ignore single-line comments", 18, _doc
343:                        .getFirstNonWSCharPos(6));
344:
345:                _setDocText("foo();\n /* bar\nblah */ boo\n");
346:                assertEquals("Ignore multiline comments", 23, _doc
347:                        .getFirstNonWSCharPos(6));
348:                _setDocText("foo   /");
349:                assertEquals("Slash at end of document", 6, _doc
350:                        .getFirstNonWSCharPos(4));
351:                _setDocText("foo   //");
352:                assertEquals("// at end", -1, _doc.getFirstNonWSCharPos(4));
353:                _setDocText("foo   /*");
354:                assertEquals("/* at end", -1, _doc.getFirstNonWSCharPos(4));
355:
356:                _setDocText("abcdefghijk");
357:                _doc.setCurrentLocation(3);
358:                int reducedModelPos = _doc.getReduced().absOffset();
359:                _doc.getLineFirstCharPos(5);
360:                assertEquals(
361:                        "Check that position in reduced model is unaffected "
362:                                + "after call to getLineFirstCharPos",
363:                        reducedModelPos, _doc.getReduced().absOffset());
364:            }
365:
366:            /**
367:             * Tests that the "intelligent" beginning of line can be found, given
368:             * a position on the line.  Very similar to getFirstNonWSCharPos, except
369:             * that comments are treated as non-whitespace, and less parsing needs
370:             * to be done.
371:             */
372:            public void testGetIntelligentBeginLinePos()
373:                    throws BadLocationException {
374:                _setDocText("   foo();");
375:                assertEquals("simple text, in WS", 0, _doc
376:                        .getIntelligentBeginLinePos(1));
377:                assertEquals("simple text, end of WS", 0, _doc
378:                        .getIntelligentBeginLinePos(3));
379:                assertEquals("simple text, in text", 3, _doc
380:                        .getIntelligentBeginLinePos(4));
381:                assertEquals("simple text, at end", 3, _doc
382:                        .getIntelligentBeginLinePos(9));
383:
384:                _setDocText("   // foo");
385:                assertEquals("comment, in WS", 0, _doc
386:                        .getIntelligentBeginLinePos(0));
387:                assertEquals("comment, end of WS", 0, _doc
388:                        .getIntelligentBeginLinePos(3));
389:                assertEquals("comment, in text", 3, _doc
390:                        .getIntelligentBeginLinePos(4));
391:                assertEquals("comment, at end", 3, _doc
392:                        .getIntelligentBeginLinePos(9));
393:
394:                _setDocText("   foo();\n bar();\n");
395:                assertEquals("multiple lines, at start", 10, _doc
396:                        .getIntelligentBeginLinePos(10));
397:                assertEquals("multiple lines, end of WS", 10, _doc
398:                        .getIntelligentBeginLinePos(11));
399:                assertEquals("multiple lines, in text", 11, _doc
400:                        .getIntelligentBeginLinePos(13));
401:                assertEquals("multiple lines, at end", 11, _doc
402:                        .getIntelligentBeginLinePos(17));
403:
404:                _setDocText("abc  def");
405:                assertEquals("no leading WS, in middle", 0, _doc
406:                        .getIntelligentBeginLinePos(5));
407:            }
408:        }
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