Coverage for tests/test_exprParserYacc.py: 9%

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1# This file is part of daf_butler. 

2# 

3# Developed for the LSST Data Management System. 

4# This product includes software developed by the LSST Project 

5# (https://www.lsst.org). 

6# See the COPYRIGHT file at the top-level directory of this distribution 

7# for details of code ownership. 

8# 

9# This program is free software: you can redistribute it and/or modify 

10# it under the terms of the GNU General Public License as published by 

11# the Free Software Foundation, either version 3 of the License, or 

12# (at your option) any later version. 

13# 

14# This program is distributed in the hope that it will be useful, 

15# but WITHOUT ANY WARRANTY; without even the implied warranty of 

16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

17# GNU General Public License for more details. 

18# 

19# You should have received a copy of the GNU General Public License 

20# along with this program. If not, see <https://www.gnu.org/licenses/>. 

21 

22"""Simple unit test for exprParser subpackage module. 

23""" 

24 

25import unittest 

26 

27import astropy.time 

28from lsst.daf.butler.registry.queries.expressions.parser import ParseError, ParserYacc, TreeVisitor, exprTree 

29from lsst.daf.butler.registry.queries.expressions.parser.parserYacc import _parseTimeString 

30 

31 

32class _Visitor(TreeVisitor): 

33 """Trivial implementation of TreeVisitor.""" 

34 

35 def visitNumericLiteral(self, value, node): 

36 return f"N({value})" 

37 

38 def visitStringLiteral(self, value, node): 

39 return f"S({value})" 

40 

41 def visitTimeLiteral(self, value, node): 

42 return f"T({value})" 

43 

44 def visitRangeLiteral(self, start, stop, stride, node): 

45 if stride is None: 

46 return f"R({start}..{stop})" 

47 else: 

48 return f"R({start}..{stop}:{stride})" 

49 

50 def visitIdentifier(self, name, node): 

51 return f"ID({name})" 

52 

53 def visitUnaryOp(self, operator, operand, node): 

54 return f"U({operator} {operand})" 

55 

56 def visitBinaryOp(self, operator, lhs, rhs, node): 

57 return f"B({lhs} {operator} {rhs})" 

58 

59 def visitIsIn(self, lhs, values, not_in, node): 

60 values = ", ".join([str(val) for val in values]) 

61 if not_in: 

62 return f"!IN({lhs} ({values}))" 

63 else: 

64 return f"IN({lhs} ({values}))" 

65 

66 def visitParens(self, expression, node): 

67 return f"P({expression})" 

68 

69 

70class ParserLexTestCase(unittest.TestCase): 

71 """A test case for ParserYacc""" 

72 

73 def setUp(self): 

74 pass 

75 

76 def tearDown(self): 

77 pass 

78 

79 def testInstantiate(self): 

80 """Tests for making ParserLex instances""" 

81 parser = ParserYacc() # noqa: F841 

82 

83 def testEmpty(self): 

84 """Tests for empty expression""" 

85 parser = ParserYacc() 

86 

87 # empty expression is allowed, returns None 

88 tree = parser.parse("") 

89 self.assertIsNone(tree) 

90 

91 def testParseLiteral(self): 

92 """Tests for literals (strings/numbers)""" 

93 parser = ParserYacc() 

94 

95 tree = parser.parse("1") 

96 self.assertIsInstance(tree, exprTree.NumericLiteral) 

97 self.assertEqual(tree.value, "1") 

98 

99 tree = parser.parse(".5e-2") 

100 self.assertIsInstance(tree, exprTree.NumericLiteral) 

101 self.assertEqual(tree.value, ".5e-2") 

102 

103 tree = parser.parse("'string'") 

104 self.assertIsInstance(tree, exprTree.StringLiteral) 

105 self.assertEqual(tree.value, "string") 

106 

107 tree = parser.parse("10..20") 

108 self.assertIsInstance(tree, exprTree.RangeLiteral) 

109 self.assertEqual(tree.start, 10) 

110 self.assertEqual(tree.stop, 20) 

111 self.assertEqual(tree.stride, None) 

112 

113 tree = parser.parse("-10 .. 10:5") 

114 self.assertIsInstance(tree, exprTree.RangeLiteral) 

115 self.assertEqual(tree.start, -10) 

116 self.assertEqual(tree.stop, 10) 

117 self.assertEqual(tree.stride, 5) 

118 

119 # more extensive tests of time parsing is below 

120 tree = parser.parse("T'51544.0'") 

121 self.assertIsInstance(tree, exprTree.TimeLiteral) 

122 self.assertEqual(tree.value, astropy.time.Time(51544.0, format="mjd", scale="tai")) 

123 

124 tree = parser.parse("T'2020-03-30T12:20:33'") 

125 self.assertIsInstance(tree, exprTree.TimeLiteral) 

126 self.assertEqual(tree.value, astropy.time.Time("2020-03-30T12:20:33", format="isot", scale="utc")) 

127 

128 def testParseIdentifiers(self): 

129 """Tests for identifiers""" 

130 parser = ParserYacc() 

131 

132 tree = parser.parse("a") 

133 self.assertIsInstance(tree, exprTree.Identifier) 

134 self.assertEqual(tree.name, "a") 

135 

136 tree = parser.parse("a.b") 

137 self.assertIsInstance(tree, exprTree.Identifier) 

138 self.assertEqual(tree.name, "a.b") 

139 

140 def testParseParens(self): 

141 """Tests for identifiers""" 

142 parser = ParserYacc() 

143 

144 tree = parser.parse("(a)") 

145 self.assertIsInstance(tree, exprTree.Parens) 

146 self.assertIsInstance(tree.expr, exprTree.Identifier) 

147 self.assertEqual(tree.expr.name, "a") 

148 

149 def testUnaryOps(self): 

150 """Tests for unary plus and minus""" 

151 parser = ParserYacc() 

152 

153 tree = parser.parse("+a") 

154 self.assertIsInstance(tree, exprTree.UnaryOp) 

155 self.assertEqual(tree.op, "+") 

156 self.assertIsInstance(tree.operand, exprTree.Identifier) 

157 self.assertEqual(tree.operand.name, "a") 

158 

159 tree = parser.parse("- x.y") 

160 self.assertIsInstance(tree, exprTree.UnaryOp) 

161 self.assertEqual(tree.op, "-") 

162 self.assertIsInstance(tree.operand, exprTree.Identifier) 

163 self.assertEqual(tree.operand.name, "x.y") 

164 

165 def testBinaryOps(self): 

166 """Tests for binary operators""" 

167 parser = ParserYacc() 

168 

169 tree = parser.parse("a + b") 

170 self.assertIsInstance(tree, exprTree.BinaryOp) 

171 self.assertEqual(tree.op, "+") 

172 self.assertIsInstance(tree.lhs, exprTree.Identifier) 

173 self.assertIsInstance(tree.rhs, exprTree.Identifier) 

174 self.assertEqual(tree.lhs.name, "a") 

175 self.assertEqual(tree.rhs.name, "b") 

176 

177 tree = parser.parse("a - 2") 

178 self.assertIsInstance(tree, exprTree.BinaryOp) 

179 self.assertEqual(tree.op, "-") 

180 self.assertIsInstance(tree.lhs, exprTree.Identifier) 

181 self.assertIsInstance(tree.rhs, exprTree.NumericLiteral) 

182 self.assertEqual(tree.lhs.name, "a") 

183 self.assertEqual(tree.rhs.value, "2") 

184 

185 tree = parser.parse("2 * 2") 

186 self.assertIsInstance(tree, exprTree.BinaryOp) 

187 self.assertEqual(tree.op, "*") 

188 self.assertIsInstance(tree.lhs, exprTree.NumericLiteral) 

189 self.assertIsInstance(tree.rhs, exprTree.NumericLiteral) 

190 self.assertEqual(tree.lhs.value, "2") 

191 self.assertEqual(tree.rhs.value, "2") 

192 

193 tree = parser.parse("1.e5/2") 

194 self.assertIsInstance(tree, exprTree.BinaryOp) 

195 self.assertEqual(tree.op, "/") 

196 self.assertIsInstance(tree.lhs, exprTree.NumericLiteral) 

197 self.assertIsInstance(tree.rhs, exprTree.NumericLiteral) 

198 self.assertEqual(tree.lhs.value, "1.e5") 

199 self.assertEqual(tree.rhs.value, "2") 

200 

201 tree = parser.parse("333%76") 

202 self.assertIsInstance(tree, exprTree.BinaryOp) 

203 self.assertEqual(tree.op, "%") 

204 self.assertIsInstance(tree.lhs, exprTree.NumericLiteral) 

205 self.assertIsInstance(tree.rhs, exprTree.NumericLiteral) 

206 self.assertEqual(tree.lhs.value, "333") 

207 self.assertEqual(tree.rhs.value, "76") 

208 

209 # tests for overlaps operator 

210 tree = parser.parse("region1 OVERLAPS region2") 

211 self.assertIsInstance(tree, exprTree.BinaryOp) 

212 self.assertEqual(tree.op, "OVERLAPS") 

213 self.assertIsInstance(tree.lhs, exprTree.Identifier) 

214 self.assertIsInstance(tree.rhs, exprTree.Identifier) 

215 

216 # time ranges with literals 

217 tree = parser.parse("(T'2020-01-01', T'2020-01-02') overlaps (T'2020-01-01', T'2020-01-02')") 

218 self.assertIsInstance(tree, exprTree.BinaryOp) 

219 self.assertEqual(tree.op, "OVERLAPS") 

220 self.assertIsInstance(tree.lhs, exprTree.TupleNode) 

221 self.assertIsInstance(tree.rhs, exprTree.TupleNode) 

222 

223 # but syntax allows anything, it's visitor responsibility to decide 

224 # what are the right operands 

225 tree = parser.parse("x+y Overlaps function(x-y)") 

226 self.assertIsInstance(tree, exprTree.BinaryOp) 

227 self.assertEqual(tree.op, "OVERLAPS") 

228 self.assertIsInstance(tree.lhs, exprTree.BinaryOp) 

229 self.assertIsInstance(tree.rhs, exprTree.FunctionCall) 

230 

231 def testIsIn(self): 

232 """Tests for IN""" 

233 parser = ParserYacc() 

234 

235 tree = parser.parse("a in (1,2,'X')") 

236 self.assertIsInstance(tree, exprTree.IsIn) 

237 self.assertFalse(tree.not_in) 

238 self.assertIsInstance(tree.lhs, exprTree.Identifier) 

239 self.assertEqual(tree.lhs.name, "a") 

240 self.assertIsInstance(tree.values, list) 

241 self.assertEqual(len(tree.values), 3) 

242 self.assertIsInstance(tree.values[0], exprTree.NumericLiteral) 

243 self.assertEqual(tree.values[0].value, "1") 

244 self.assertIsInstance(tree.values[1], exprTree.NumericLiteral) 

245 self.assertEqual(tree.values[1].value, "2") 

246 self.assertIsInstance(tree.values[2], exprTree.StringLiteral) 

247 self.assertEqual(tree.values[2].value, "X") 

248 

249 tree = parser.parse("10 not in (1000, 2000..3000:100)") 

250 self.assertIsInstance(tree, exprTree.IsIn) 

251 self.assertTrue(tree.not_in) 

252 self.assertIsInstance(tree.lhs, exprTree.NumericLiteral) 

253 self.assertEqual(tree.lhs.value, "10") 

254 self.assertIsInstance(tree.values, list) 

255 self.assertEqual(len(tree.values), 2) 

256 self.assertIsInstance(tree.values[0], exprTree.NumericLiteral) 

257 self.assertEqual(tree.values[0].value, "1000") 

258 self.assertIsInstance(tree.values[1], exprTree.RangeLiteral) 

259 self.assertEqual(tree.values[1].start, 2000) 

260 self.assertEqual(tree.values[1].stop, 3000) 

261 self.assertEqual(tree.values[1].stride, 100) 

262 

263 tree = parser.parse("10 in (-1000, -2000)") 

264 self.assertIsInstance(tree, exprTree.IsIn) 

265 self.assertFalse(tree.not_in) 

266 self.assertIsInstance(tree.lhs, exprTree.NumericLiteral) 

267 self.assertEqual(tree.lhs.value, "10") 

268 self.assertIsInstance(tree.values, list) 

269 self.assertEqual(len(tree.values), 2) 

270 self.assertIsInstance(tree.values[0], exprTree.NumericLiteral) 

271 self.assertEqual(tree.values[0].value, "-1000") 

272 self.assertIsInstance(tree.values[1], exprTree.NumericLiteral) 

273 self.assertEqual(tree.values[1].value, "-2000") 

274 

275 # test for time contained in time range, all literals 

276 tree = parser.parse("T'2020-01-01' in (T'2020-01-01', T'2020-01-02')") 

277 self.assertIsInstance(tree, exprTree.IsIn) 

278 self.assertFalse(tree.not_in) 

279 self.assertIsInstance(tree.lhs, exprTree.TimeLiteral) 

280 self.assertEqual(len(tree.values), 2) 

281 self.assertIsInstance(tree.values[0], exprTree.TimeLiteral) 

282 self.assertIsInstance(tree.values[1], exprTree.TimeLiteral) 

283 

284 # test for time range contained in time range 

285 tree = parser.parse("(T'2020-01-01', t1) in (T'2020-01-01', t2)") 

286 self.assertIsInstance(tree, exprTree.IsIn) 

287 self.assertFalse(tree.not_in) 

288 self.assertIsInstance(tree.lhs, exprTree.TupleNode) 

289 self.assertEqual(len(tree.values), 2) 

290 self.assertIsInstance(tree.values[0], exprTree.TimeLiteral) 

291 self.assertIsInstance(tree.values[1], exprTree.Identifier) 

292 

293 # test for point in region (we don't have region syntax yet, use 

294 # identifier) 

295 tree = parser.parse("point(1, 2) in (region1)") 

296 self.assertIsInstance(tree, exprTree.IsIn) 

297 self.assertFalse(tree.not_in) 

298 self.assertIsInstance(tree.lhs, exprTree.PointNode) 

299 self.assertEqual(len(tree.values), 1) 

300 self.assertIsInstance(tree.values[0], exprTree.Identifier) 

301 

302 # parens on right hand side are required 

303 with self.assertRaises(ParseError): 

304 parser.parse("point(1, 2) in region1") 

305 

306 # and we don't support full expressions in RHS list 

307 with self.assertRaises(ParseError): 

308 parser.parse("point(1, 2) in (x + y)") 

309 

310 def testCompareOps(self): 

311 """Tests for comparison operators""" 

312 parser = ParserYacc() 

313 

314 for op in ("=", "!=", "<", "<=", ">", ">="): 

315 tree = parser.parse("a {} 10".format(op)) 

316 self.assertIsInstance(tree, exprTree.BinaryOp) 

317 self.assertEqual(tree.op, op) 

318 self.assertIsInstance(tree.lhs, exprTree.Identifier) 

319 self.assertIsInstance(tree.rhs, exprTree.NumericLiteral) 

320 self.assertEqual(tree.lhs.name, "a") 

321 self.assertEqual(tree.rhs.value, "10") 

322 

323 def testBoolOps(self): 

324 """Tests for boolean operators""" 

325 parser = ParserYacc() 

326 

327 for op in ("OR", "AND"): 

328 tree = parser.parse("a {} b".format(op)) 

329 self.assertIsInstance(tree, exprTree.BinaryOp) 

330 self.assertEqual(tree.op, op) 

331 self.assertIsInstance(tree.lhs, exprTree.Identifier) 

332 self.assertIsInstance(tree.rhs, exprTree.Identifier) 

333 self.assertEqual(tree.lhs.name, "a") 

334 self.assertEqual(tree.rhs.name, "b") 

335 

336 tree = parser.parse("NOT b") 

337 self.assertIsInstance(tree, exprTree.UnaryOp) 

338 self.assertEqual(tree.op, "NOT") 

339 self.assertIsInstance(tree.operand, exprTree.Identifier) 

340 self.assertEqual(tree.operand.name, "b") 

341 

342 def testFunctionCall(self): 

343 """Tests for function calls""" 

344 parser = ParserYacc() 

345 

346 tree = parser.parse("f()") 

347 self.assertIsInstance(tree, exprTree.FunctionCall) 

348 self.assertEqual(tree.name, "f") 

349 self.assertEqual(tree.args, []) 

350 

351 tree = parser.parse("f1(a)") 

352 self.assertIsInstance(tree, exprTree.FunctionCall) 

353 self.assertEqual(tree.name, "f1") 

354 self.assertEqual(len(tree.args), 1) 

355 self.assertIsInstance(tree.args[0], exprTree.Identifier) 

356 self.assertEqual(tree.args[0].name, "a") 

357 

358 tree = parser.parse("anything_goes('a', x+y, ((a AND b) or (C = D)), NOT T < 42., Z IN (1,2,3,4))") 

359 self.assertIsInstance(tree, exprTree.FunctionCall) 

360 self.assertEqual(tree.name, "anything_goes") 

361 self.assertEqual(len(tree.args), 5) 

362 self.assertIsInstance(tree.args[0], exprTree.StringLiteral) 

363 self.assertIsInstance(tree.args[1], exprTree.BinaryOp) 

364 self.assertIsInstance(tree.args[2], exprTree.Parens) 

365 self.assertIsInstance(tree.args[3], exprTree.UnaryOp) 

366 self.assertIsInstance(tree.args[4], exprTree.IsIn) 

367 

368 with self.assertRaises(ParseError): 

369 parser.parse("f.ff()") 

370 

371 def testPointNode(self): 

372 """Tests for POINT() function""" 

373 parser = ParserYacc() 

374 

375 # POINT function makes special node type 

376 tree = parser.parse("POINT(Object.ra, 0.0)") 

377 self.assertIsInstance(tree, exprTree.PointNode) 

378 self.assertIsInstance(tree.ra, exprTree.Identifier) 

379 self.assertEqual(tree.ra.name, "Object.ra") 

380 self.assertIsInstance(tree.dec, exprTree.NumericLiteral) 

381 self.assertEqual(tree.dec.value, "0.0") 

382 

383 # it is not case sensitive 

384 tree = parser.parse("Point(1, 1)") 

385 self.assertIsInstance(tree, exprTree.PointNode) 

386 

387 def testTupleNode(self): 

388 """Tests for tuple""" 

389 parser = ParserYacc() 

390 

391 # test with simple identifier and literal 

392 tree = parser.parse("(Object.ra, 0.0)") 

393 self.assertIsInstance(tree, exprTree.TupleNode) 

394 self.assertEqual(len(tree.items), 2) 

395 self.assertIsInstance(tree.items[0], exprTree.Identifier) 

396 self.assertEqual(tree.items[0].name, "Object.ra") 

397 self.assertIsInstance(tree.items[1], exprTree.NumericLiteral) 

398 self.assertEqual(tree.items[1].value, "0.0") 

399 

400 # any expression can appear in tuple 

401 tree = parser.parse("(x+y, ((a AND b) or (C = D)))") 

402 self.assertIsInstance(tree, exprTree.TupleNode) 

403 self.assertEqual(len(tree.items), 2) 

404 self.assertIsInstance(tree.items[0], exprTree.BinaryOp) 

405 self.assertIsInstance(tree.items[1], exprTree.Parens) 

406 

407 # only two items can appear in a tuple 

408 with self.assertRaises(ParseError): 

409 parser.parse("(1, 2, 3)") 

410 

411 def testExpression(self): 

412 """Test for more or less complete expression""" 

413 parser = ParserYacc() 

414 

415 expression = ( 

416 "((instrument='HSC' AND detector != 9) OR instrument='CFHT') " 

417 "AND tract=8766 AND patch.cell_x > 5 AND " 

418 "patch.cell_y < 4 AND band='i'" 

419 ) 

420 

421 tree = parser.parse(expression) 

422 self.assertIsInstance(tree, exprTree.BinaryOp) 

423 self.assertEqual(tree.op, "AND") 

424 self.assertIsInstance(tree.lhs, exprTree.BinaryOp) 

425 # AND is left-associative, so rhs operand will be the 

426 # last sub-expressions 

427 self.assertIsInstance(tree.rhs, exprTree.BinaryOp) 

428 self.assertEqual(tree.rhs.op, "=") 

429 self.assertIsInstance(tree.rhs.lhs, exprTree.Identifier) 

430 self.assertEqual(tree.rhs.lhs.name, "band") 

431 self.assertIsInstance(tree.rhs.rhs, exprTree.StringLiteral) 

432 self.assertEqual(tree.rhs.rhs.value, "i") 

433 

434 def testSubstitution(self): 

435 """Test for identifier substitution""" 

436 # substitution is not recursive, so we can swap id2/id3 

437 idMap = { 

438 "id1": exprTree.StringLiteral("id1 value"), 

439 "id2": exprTree.Identifier("id3"), 

440 "id3": exprTree.Identifier("id2"), 

441 "POINT": exprTree.StringLiteral("not used"), 

442 "OR": exprTree.StringLiteral("not used"), 

443 } 

444 parser = ParserYacc(idMap=idMap) 

445 

446 expression = "id1 = 'v'" 

447 tree = parser.parse(expression) 

448 self.assertIsInstance(tree, exprTree.BinaryOp) 

449 self.assertEqual(tree.op, "=") 

450 self.assertIsInstance(tree.lhs, exprTree.StringLiteral) 

451 self.assertEqual(tree.lhs.value, "id1 value") 

452 

453 expression = "id2 - id3" 

454 tree = parser.parse(expression) 

455 self.assertIsInstance(tree, exprTree.BinaryOp) 

456 self.assertEqual(tree.op, "-") 

457 self.assertIsInstance(tree.lhs, exprTree.Identifier) 

458 self.assertEqual(tree.lhs.name, "id3") 

459 self.assertIsInstance(tree.rhs, exprTree.Identifier) 

460 self.assertEqual(tree.rhs.name, "id2") 

461 

462 # reserved words are not substituted 

463 expression = "id2 OR id3" 

464 tree = parser.parse(expression) 

465 self.assertIsInstance(tree, exprTree.BinaryOp) 

466 self.assertEqual(tree.op, "OR") 

467 

468 # function names are not substituted 

469 expression = "POINT(1, 2)" 

470 tree = parser.parse(expression) 

471 self.assertIsInstance(tree, exprTree.PointNode) 

472 

473 def testException(self): 

474 """Test for exceptional cases""" 

475 

476 def _assertExc(exc, expr, token, pos, lineno, posInLine): 

477 """Check exception attribute values""" 

478 self.assertEqual(exc.expression, expr) 

479 self.assertEqual(exc.token, token) 

480 self.assertEqual(exc.pos, pos) 

481 self.assertEqual(exc.lineno, lineno) 

482 self.assertEqual(exc.posInLine, posInLine) 

483 

484 parser = ParserYacc() 

485 

486 expression = "(1, 2, 3)" 

487 with self.assertRaises(ParseError) as catcher: 

488 parser.parse(expression) 

489 _assertExc(catcher.exception, expression, ",", 5, 1, 5) 

490 

491 expression = "\n(1\n,\n 2, 3)" 

492 with self.assertRaises(ParseError) as catcher: 

493 parser.parse(expression) 

494 _assertExc(catcher.exception, expression, ",", 8, 4, 2) 

495 

496 expression = "T'not-a-time'" 

497 with self.assertRaises(ParseError) as catcher: 

498 parser.parse(expression) 

499 _assertExc(catcher.exception, expression, "not-a-time", 0, 1, 0) 

500 

501 def testStr(self): 

502 """Test for formatting""" 

503 parser = ParserYacc() 

504 

505 tree = parser.parse("(a+b)") 

506 self.assertEqual(str(tree), "(a + b)") 

507 

508 tree = parser.parse("1 in (1,'x',3)") 

509 self.assertEqual(str(tree), "1 IN (1, 'x', 3)") 

510 

511 tree = parser.parse("a not in (1,'x',3)") 

512 self.assertEqual(str(tree), "a NOT IN (1, 'x', 3)") 

513 

514 tree = parser.parse("(A or B) And NoT (x+3 > y)") 

515 self.assertEqual(str(tree), "(A OR B) AND NOT (x + 3 > y)") 

516 

517 tree = parser.parse("A in (100, 200..300:50)") 

518 self.assertEqual(str(tree), "A IN (100, 200..300:50)") 

519 

520 def testVisit(self): 

521 """Test for visitor methods""" 

522 

523 # test should cover all visit* methods 

524 parser = ParserYacc() 

525 visitor = _Visitor() 

526 

527 tree = parser.parse("(a+b)") 

528 result = tree.visit(visitor) 

529 self.assertEqual(result, "P(B(ID(a) + ID(b)))") 

530 

531 tree = parser.parse("(A or B) and not (x + 3 > y)") 

532 result = tree.visit(visitor) 

533 self.assertEqual(result, "B(P(B(ID(A) OR ID(B))) AND U(NOT P(B(B(ID(x) + N(3)) > ID(y)))))") 

534 

535 tree = parser.parse("x in (1,2) AND y NOT IN (1.1, .25, 1e2) OR z in ('a', 'b')") 

536 result = tree.visit(visitor) 

537 self.assertEqual( 

538 result, 

539 "B(B(IN(ID(x) (N(1), N(2))) AND !IN(ID(y) (N(1.1), N(.25), N(1e2)))) OR IN(ID(z) (S(a), S(b))))", 

540 ) 

541 

542 tree = parser.parse("x in (1,2,5..15) AND y NOT IN (-100..100:10)") 

543 result = tree.visit(visitor) 

544 self.assertEqual(result, "B(IN(ID(x) (N(1), N(2), R(5..15))) AND !IN(ID(y) (R(-100..100:10))))") 

545 

546 tree = parser.parse("time > T'2020-03-30'") 

547 result = tree.visit(visitor) 

548 self.assertEqual(result, "B(ID(time) > T(2020-03-30 00:00:00.000))") 

549 

550 def testParseTimeStr(self): 

551 """Test for _parseTimeString method""" 

552 

553 # few expected failures 

554 bad_times = [ 

555 "", 

556 " ", 

557 "123.456e10", # no exponents 

558 "mjd-dj/123.456", # format can only have word chars 

559 "123.456/mai-tai", # scale can only have word chars 

560 "2020-03-01 00", # iso needs minutes if hour is given 

561 "2020-03-01T", # isot needs hour:minute 

562 "2020:100:12", # yday needs minutes if hour is given 

563 "format/123456.00", # unknown format 

564 "123456.00/unscale", # unknown scale 

565 ] 

566 for bad_time in bad_times: 

567 with self.assertRaises(ValueError): 

568 _parseTimeString(bad_time) 

569 

570 # each tuple is (string, value, format, scale) 

571 tests = [ 

572 ("51544.0", 51544.0, "mjd", "tai"), 

573 ("mjd/51544.0", 51544.0, "mjd", "tai"), 

574 ("51544.0/tai", 51544.0, "mjd", "tai"), 

575 ("mjd/51544.0/tai", 51544.0, "mjd", "tai"), 

576 ("MJd/51544.0/TAi", 51544.0, "mjd", "tai"), 

577 ("jd/2451544.5", 2451544.5, "jd", "tai"), 

578 ("jd/2451544.5", 2451544.5, "jd", "tai"), 

579 ("51544.0/utc", 51544.0, "mjd", "utc"), 

580 ("unix/946684800.0", 946684800.0, "unix", "utc"), 

581 ("cxcsec/63072064.184", 63072064.184, "cxcsec", "tt"), 

582 ("2020-03-30", "2020-03-30 00:00:00.000", "iso", "utc"), 

583 ("2020-03-30 12:20", "2020-03-30 12:20:00.000", "iso", "utc"), 

584 ("2020-03-30 12:20:33.456789", "2020-03-30 12:20:33.457", "iso", "utc"), 

585 ("2020-03-30T12:20", "2020-03-30T12:20:00.000", "isot", "utc"), 

586 ("2020-03-30T12:20:33.456789", "2020-03-30T12:20:33.457", "isot", "utc"), 

587 ("isot/2020-03-30", "2020-03-30T00:00:00.000", "isot", "utc"), 

588 ("2020-03-30/tai", "2020-03-30 00:00:00.000", "iso", "tai"), 

589 ("+02020-03-30", "2020-03-30T00:00:00.000", "fits", "utc"), 

590 ("+02020-03-30T12:20:33", "2020-03-30T12:20:33.000", "fits", "utc"), 

591 ("+02020-03-30T12:20:33.456789", "2020-03-30T12:20:33.457", "fits", "utc"), 

592 ("fits/2020-03-30", "2020-03-30T00:00:00.000", "fits", "utc"), 

593 ("2020:123", "2020:123:00:00:00.000", "yday", "utc"), 

594 ("2020:123:12:20", "2020:123:12:20:00.000", "yday", "utc"), 

595 ("2020:123:12:20:33.456789", "2020:123:12:20:33.457", "yday", "utc"), 

596 ("yday/2020:123:12:20/tai", "2020:123:12:20:00.000", "yday", "tai"), 

597 ] 

598 for time_str, value, fmt, scale in tests: 

599 time = _parseTimeString(time_str) 

600 self.assertEqual(time.value, value) 

601 self.assertEqual(time.format, fmt) 

602 self.assertEqual(time.scale, scale) 

603 

604 

605if __name__ == "__main__": 605 ↛ 606line 605 didn't jump to line 606, because the condition on line 605 was never true

606 unittest.main()