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How to use _parse method in avocado

Best Python code snippet using avocado_python
t048rewrite.py
Source:t048rewrite.py
...6import testbase7class T1(testbase.ANTLRTest):8    def setUp(self):9        self.compileGrammar()10    def _parse(self, input):11        cStream = antlr3.StringStream(input)12        lexer = self.getLexer(cStream)13        tStream = antlr3.TokenRewriteStream(lexer)14        tStream.fillBuffer()15        return tStream16    def testInsertBeforeIndex0(self):17        tokens = self._parse("abc")18        tokens.insertBefore(0, "0")19        result = tokens.toString()20        expecting = "0abc"21        self.assertEqual(result, expecting)22    def testInsertAfterLastIndex(self):23        tokens = self._parse("abc")24        tokens.insertAfter(2, "x")25        result = tokens.toString()26        expecting = "abcx"27        self.assertEqual(result, expecting)28    def test2InsertBeforeAfterMiddleIndex(self):29        tokens = self._parse("abc")30        tokens.insertBefore(1, "x")31        tokens.insertAfter(1, "x")32        result = tokens.toString()33        expecting = "axbxc"34        self.assertEqual(result, expecting)35    def testReplaceIndex0(self):36        tokens = self._parse("abc")37        tokens.replace(0, "x")38        result = tokens.toString()39        expecting = "xbc"40        self.assertEqual(result, expecting)41    def testReplaceLastIndex(self):42        tokens = self._parse("abc")43        tokens.replace(2, "x")44        result = tokens.toString()45        expecting = "abx"46        self.assertEqual(result, expecting)47    def testReplaceMiddleIndex(self):48        tokens = self._parse("abc")49        tokens.replace(1, "x")50        result = tokens.toString()51        expecting = "axc"52        self.assertEqual(result, expecting)53    def test2ReplaceMiddleIndex(self):54        tokens = self._parse("abc")55        tokens.replace(1, "x")56        tokens.replace(1, "y")57        result = tokens.toString()58        expecting = "ayc"59        self.assertEqual(result, expecting)60    def test2ReplaceMiddleIndex1InsertBefore(self):61        tokens = self._parse("abc")62        tokens.insertBefore(0, "_")63        tokens.replace(1, "x")64        tokens.replace(1, "y")65        result = tokens.toString()66        expecting = "_ayc"67        self.assertEqual(expecting, result)68    def testReplaceThenDeleteMiddleIndex(self):69        tokens = self._parse("abc")70        tokens.replace(1, "x")71        tokens.delete(1)72        result = tokens.toString()73        expecting = "ac"74        self.assertEqual(result, expecting)75    def testInsertInPriorReplace(self):76        tokens = self._parse("abc")77        tokens.replace(0, 2, "x")78        tokens.insertBefore(1, "0")79        self.assertRaisesRegex(80            ValueError,81            (r'insert op <InsertBeforeOp@1:"0"> within boundaries of '82             r'previous <ReplaceOp@0\.\.2:"x">'),83            tokens.toString)84    def testInsertThenReplaceSameIndex(self):85        tokens = self._parse("abc")86        tokens.insertBefore(0, "0")87        tokens.replace(0, "x")  # supercedes insert at 088        result = tokens.toString()89        expecting = "0xbc"90        self.assertEqual(result, expecting)91    def test2InsertMiddleIndex(self):92        tokens = self._parse("abc")93        tokens.insertBefore(1, "x")94        tokens.insertBefore(1, "y")95        result = tokens.toString()96        expecting = "ayxbc"97        self.assertEqual(result, expecting)98    def test2InsertThenReplaceIndex0(self):99        tokens = self._parse("abc")100        tokens.insertBefore(0, "x")101        tokens.insertBefore(0, "y")102        tokens.replace(0, "z")103        result = tokens.toString()104        expecting = "yxzbc"105        self.assertEqual(result, expecting)106    def testReplaceThenInsertBeforeLastIndex(self):107        tokens = self._parse("abc")108        tokens.replace(2, "x")109        tokens.insertBefore(2, "y")110        result = tokens.toString()111        expecting = "abyx"112        self.assertEqual(result, expecting)113    def testInsertThenReplaceLastIndex(self):114        tokens = self._parse("abc")115        tokens.insertBefore(2, "y")116        tokens.replace(2, "x")117        result = tokens.toString()118        expecting = "abyx"119        self.assertEqual(result, expecting)120    def testReplaceThenInsertAfterLastIndex(self):121        tokens = self._parse("abc")122        tokens.replace(2, "x")123        tokens.insertAfter(2, "y")124        result = tokens.toString()125        expecting = "abxy"126        self.assertEqual(result, expecting)127    def testReplaceRangeThenInsertAtLeftEdge(self):128        tokens = self._parse("abcccba")129        tokens.replace(2, 4, "x")130        tokens.insertBefore(2, "y")131        result = tokens.toString()132        expecting = "abyxba"133        self.assertEqual(result, expecting)134    def testReplaceRangeThenInsertAtRightEdge(self):135        tokens = self._parse("abcccba")136        tokens.replace(2, 4, "x")137        tokens.insertBefore(4, "y") # no effect; within range of a replace138        self.assertRaisesRegex(139            ValueError,140            (r'insert op <InsertBeforeOp@4:"y"> within boundaries of '141             r'previous <ReplaceOp@2\.\.4:"x">'),142            tokens.toString)143    def testReplaceRangeThenInsertAfterRightEdge(self):144        tokens = self._parse("abcccba")145        tokens.replace(2, 4, "x")146        tokens.insertAfter(4, "y")147        result = tokens.toString()148        expecting = "abxyba"149        self.assertEqual(result, expecting)150    def testReplaceAll(self):151        tokens = self._parse("abcccba")152        tokens.replace(0, 6, "x")153        result = tokens.toString()154        expecting = "x"155        self.assertEqual(result, expecting)156    def testReplaceSubsetThenFetch(self):157        tokens = self._parse("abcccba")158        tokens.replace(2, 4, "xyz")159        result = tokens.toString(0, 6)160        expecting = "abxyzba"161        self.assertEqual(result, expecting)162    def testReplaceThenReplaceSuperset(self):163        tokens = self._parse("abcccba")164        tokens.replace(2, 4, "xyz")165        tokens.replace(3, 5, "foo") # overlaps, error166        self.assertRaisesRegex(167            ValueError,168            (r'replace op boundaries of <ReplaceOp@3\.\.5:"foo"> overlap '169             r'with previous <ReplaceOp@2\.\.4:"xyz">'),170            tokens.toString)171    def testReplaceThenReplaceLowerIndexedSuperset(self):172        tokens = self._parse("abcccba")173        tokens.replace(2, 4, "xyz")174        tokens.replace(1, 3, "foo") # overlap, error175        self.assertRaisesRegex(176            ValueError,177            (r'replace op boundaries of <ReplaceOp@1\.\.3:"foo"> overlap '178             r'with previous <ReplaceOp@2\.\.4:"xyz">'),179            tokens.toString)180    def testReplaceSingleMiddleThenOverlappingSuperset(self):181        tokens = self._parse("abcba")182        tokens.replace(2, 2, "xyz")183        tokens.replace(0, 3, "foo")184        result = tokens.toString()185        expecting = "fooa"186        self.assertEqual(result, expecting)187    def testCombineInserts(self):188        tokens = self._parse("abc")189        tokens.insertBefore(0, "x")190        tokens.insertBefore(0, "y")191        result = tokens.toString()192        expecting = "yxabc"193        self.assertEqual(expecting, result)194    def testCombine3Inserts(self):195        tokens = self._parse("abc")196        tokens.insertBefore(1, "x")197        tokens.insertBefore(0, "y")198        tokens.insertBefore(1, "z")199        result = tokens.toString()200        expecting = "yazxbc"201        self.assertEqual(expecting, result)202    def testCombineInsertOnLeftWithReplace(self):203        tokens = self._parse("abc")204        tokens.replace(0, 2, "foo")205        tokens.insertBefore(0, "z") # combine with left edge of rewrite206        result = tokens.toString()207        expecting = "zfoo"208        self.assertEqual(expecting, result)209    def testCombineInsertOnLeftWithDelete(self):210        tokens = self._parse("abc")211        tokens.delete(0, 2)212        tokens.insertBefore(0, "z") # combine with left edge of rewrite213        result = tokens.toString()214        expecting = "z" # make sure combo is not znull215        self.assertEqual(expecting, result)216    def testDisjointInserts(self):217        tokens = self._parse("abc")218        tokens.insertBefore(1, "x")219        tokens.insertBefore(2, "y")220        tokens.insertBefore(0, "z")221        result = tokens.toString()222        expecting = "zaxbyc"223        self.assertEqual(expecting, result)224    def testOverlappingReplace(self):225        tokens = self._parse("abcc")226        tokens.replace(1, 2, "foo")227        tokens.replace(0, 3, "bar") # wipes prior nested replace228        result = tokens.toString()229        expecting = "bar"230        self.assertEqual(expecting, result)231    def testOverlappingReplace2(self):232        tokens = self._parse("abcc")233        tokens.replace(0, 3, "bar")234        tokens.replace(1, 2, "foo") # cannot split earlier replace235        self.assertRaisesRegex(236            ValueError,237            (r'replace op boundaries of <ReplaceOp@1\.\.2:"foo"> overlap '238             r'with previous <ReplaceOp@0\.\.3:"bar">'),239            tokens.toString)240    def testOverlappingReplace3(self):241        tokens = self._parse("abcc")242        tokens.replace(1, 2, "foo")243        tokens.replace(0, 2, "bar") # wipes prior nested replace244        result = tokens.toString()245        expecting = "barc"246        self.assertEqual(expecting, result)247    def testOverlappingReplace4(self):248        tokens = self._parse("abcc")249        tokens.replace(1, 2, "foo")250        tokens.replace(1, 3, "bar") # wipes prior nested replace251        result = tokens.toString()252        expecting = "abar"253        self.assertEqual(expecting, result)254    def testDropIdenticalReplace(self):255        tokens = self._parse("abcc")256        tokens.replace(1, 2, "foo")257        tokens.replace(1, 2, "foo") # drop previous, identical258        result = tokens.toString()259        expecting = "afooc"260        self.assertEqual(expecting, result)261    def testDropPrevCoveredInsert(self):262        tokens = self._parse("abc")263        tokens.insertBefore(1, "foo")264        tokens.replace(1, 2, "foo") # kill prev insert265        result = tokens.toString()266        expecting = "afoofoo"267        self.assertEqual(expecting, result)268    def testLeaveAloneDisjointInsert(self):269        tokens = self._parse("abcc")270        tokens.insertBefore(1, "x")271        tokens.replace(2, 3, "foo")272        result = tokens.toString()273        expecting = "axbfoo"274        self.assertEqual(expecting, result)275    def testLeaveAloneDisjointInsert2(self):276        tokens = self._parse("abcc")277        tokens.replace(2, 3, "foo")278        tokens.insertBefore(1, "x")279        result = tokens.toString()280        expecting = "axbfoo"281        self.assertEqual(expecting, result)282    def testInsertBeforeTokenThenDeleteThatToken(self):283        tokens = self._parse("abc")284        tokens.insertBefore(2, "y")285        tokens.delete(2)286        result = tokens.toString()287        expecting = "aby"288        self.assertEqual(expecting, result)289class T2(testbase.ANTLRTest):290    def setUp(self):291        self.compileGrammar('t048rewrite2.g')292    def _parse(self, input):293        cStream = antlr3.StringStream(input)294        lexer = self.getLexer(cStream)295        tStream = antlr3.TokenRewriteStream(lexer)296        tStream.fillBuffer()297        return tStream298    def testToStringStartStop(self):299        # Tokens: 0123456789300        # Input:  x = 3 * 0301        tokens = self._parse("x = 3 * 0;")302        tokens.replace(4, 8, "0") # replace 3 * 0 with 0303        result = tokens.toOriginalString()304        expecting = "x = 3 * 0;"305        self.assertEqual(expecting, result)306        result = tokens.toString()307        expecting = "x = 0;"308        self.assertEqual(expecting, result)309        result = tokens.toString(0, 9)310        expecting = "x = 0;"311        self.assertEqual(expecting, result)312        result = tokens.toString(4, 8)313        expecting = "0"314        self.assertEqual(expecting, result)315    def testToStringStartStop2(self):316        # Tokens: 012345678901234567317        # Input:  x = 3 * 0 + 2 * 0318        tokens = self._parse("x = 3 * 0 + 2 * 0;")319        result = tokens.toOriginalString()320        expecting = "x = 3 * 0 + 2 * 0;"321        self.assertEqual(expecting, result)322        tokens.replace(4, 8, "0") # replace 3 * 0 with 0323        result = tokens.toString()324        expecting = "x = 0 + 2 * 0;"325        self.assertEqual(expecting, result)326        result = tokens.toString(0, 17)327        expecting = "x = 0 + 2 * 0;"328        self.assertEqual(expecting, result)329        result = tokens.toString(4, 8)330        expecting = "0"331        self.assertEqual(expecting, result)332        result = tokens.toString(0, 8)...
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