diff options
Diffstat (limited to 'Lib/test/test_grammar.py')
| -rw-r--r-- | Lib/test/test_grammar.py | 123 |
1 files changed, 81 insertions, 42 deletions
diff --git a/Lib/test/test_grammar.py b/Lib/test/test_grammar.py index 268a633b2c..6b326bdaa1 100644 --- a/Lib/test/test_grammar.py +++ b/Lib/test/test_grammar.py @@ -10,7 +10,7 @@ from sys import * class TokenTests(unittest.TestCase): - def testBackslash(self): + def test_backslash(self): # Backslash means line continuation: x = 1 \ + 1 @@ -20,7 +20,7 @@ class TokenTests(unittest.TestCase): x = 0 self.assertEqual(x, 0, 'backslash ending comment') - def testPlainIntegers(self): + def test_plain_integers(self): self.assertEqual(type(000), type(0)) self.assertEqual(0xff, 255) self.assertEqual(0o377, 255) @@ -56,7 +56,7 @@ class TokenTests(unittest.TestCase): else: self.fail('Weird maxsize value %r' % maxsize) - def testLongIntegers(self): + def test_long_integers(self): x = 0 x = 0xffffffffffffffff x = 0Xffffffffffffffff @@ -66,7 +66,7 @@ class TokenTests(unittest.TestCase): x = 0b100000000000000000000000000000000000000000000000000000000000000000000 x = 0B111111111111111111111111111111111111111111111111111111111111111111111 - def testFloats(self): + def test_floats(self): x = 3.14 x = 314. x = 0.314 @@ -80,7 +80,7 @@ class TokenTests(unittest.TestCase): x = .3e14 x = 3.1e4 - def testStringLiterals(self): + def test_string_literals(self): x = ''; y = ""; self.assertTrue(len(x) == 0 and x == y) x = '\''; y = "'"; self.assertTrue(len(x) == 1 and x == y and ord(x) == 39) x = '"'; y = "\""; self.assertTrue(len(x) == 1 and x == y and ord(x) == 34) @@ -120,11 +120,18 @@ the \'lazy\' dog.\n\ ' self.assertEqual(x, y) - def testEllipsis(self): + def test_ellipsis(self): x = ... self.assertTrue(x is Ellipsis) self.assertRaises(SyntaxError, eval, ".. .") + def test_eof_error(self): + samples = ("def foo(", "\ndef foo(", "def foo(\n") + for s in samples: + with self.assertRaises(SyntaxError) as cm: + compile(s, "<test>", "exec") + self.assertIn("unexpected EOF", str(cm.exception)) + class GrammarTests(unittest.TestCase): # single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE @@ -136,11 +143,11 @@ class GrammarTests(unittest.TestCase): # expr_input: testlist NEWLINE # XXX Hard to test -- used only in calls to input() - def testEvalInput(self): + def test_eval_input(self): # testlist ENDMARKER x = eval('1, 0 or 1') - def testFuncdef(self): + def test_funcdef(self): ### [decorators] 'def' NAME parameters ['->' test] ':' suite ### decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE ### decorators: decorator+ @@ -324,7 +331,7 @@ class GrammarTests(unittest.TestCase): check_syntax_error(self, "f(*g(1=2))") check_syntax_error(self, "f(**g(1=2))") - def testLambdef(self): + def test_lambdef(self): ### lambdef: 'lambda' [varargslist] ':' test l1 = lambda : 0 self.assertEqual(l1(), 0) @@ -346,7 +353,7 @@ class GrammarTests(unittest.TestCase): ### stmt: simple_stmt | compound_stmt # Tested below - def testSimpleStmt(self): + def test_simple_stmt(self): ### simple_stmt: small_stmt (';' small_stmt)* [';'] x = 1; pass; del x def foo(): @@ -357,7 +364,7 @@ class GrammarTests(unittest.TestCase): ### small_stmt: expr_stmt | pass_stmt | del_stmt | flow_stmt | import_stmt | global_stmt | access_stmt # Tested below - def testExprStmt(self): + def test_expr_stmt(self): # (exprlist '=')* exprlist 1 1, 2, 3 @@ -370,7 +377,7 @@ class GrammarTests(unittest.TestCase): check_syntax_error(self, "x + 1 = 1") check_syntax_error(self, "a + 1 = b + 2") - def testDelStmt(self): + def test_del_stmt(self): # 'del' exprlist abc = [1,2,3] x, y, z = abc @@ -379,18 +386,18 @@ class GrammarTests(unittest.TestCase): del abc del x, y, (z, xyz) - def testPassStmt(self): + def test_pass_stmt(self): # 'pass' pass # flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt # Tested below - def testBreakStmt(self): + def test_break_stmt(self): # 'break' while 1: break - def testContinueStmt(self): + def test_continue_stmt(self): # 'continue' i = 1 while i: i = 0; continue @@ -442,7 +449,7 @@ class GrammarTests(unittest.TestCase): self.fail("continue then break in try/except in loop broken!") test_inner() - def testReturn(self): + def test_return(self): # 'return' [testlist] def g1(): return def g2(): return 1 @@ -450,17 +457,49 @@ class GrammarTests(unittest.TestCase): x = g2() check_syntax_error(self, "class foo:return 1") - def testYield(self): + def test_yield(self): + # Allowed as standalone statement + def g(): yield 1 + def g(): yield from () + # Allowed as RHS of assignment + def g(): x = yield 1 + def g(): x = yield from () + # Ordinary yield accepts implicit tuples + def g(): yield 1, 1 + def g(): x = yield 1, 1 + # 'yield from' does not + check_syntax_error(self, "def g(): yield from (), 1") + check_syntax_error(self, "def g(): x = yield from (), 1") + # Requires parentheses as subexpression + def g(): 1, (yield 1) + def g(): 1, (yield from ()) + check_syntax_error(self, "def g(): 1, yield 1") + check_syntax_error(self, "def g(): 1, yield from ()") + # Requires parentheses as call argument + def g(): f((yield 1)) + def g(): f((yield 1), 1) + def g(): f((yield from ())) + def g(): f((yield from ()), 1) + check_syntax_error(self, "def g(): f(yield 1)") + check_syntax_error(self, "def g(): f(yield 1, 1)") + check_syntax_error(self, "def g(): f(yield from ())") + check_syntax_error(self, "def g(): f(yield from (), 1)") + # Not allowed at top level + check_syntax_error(self, "yield") + check_syntax_error(self, "yield from") + # Not allowed at class scope check_syntax_error(self, "class foo:yield 1") + check_syntax_error(self, "class foo:yield from ()") + - def testRaise(self): + def test_raise(self): # 'raise' test [',' test] try: raise RuntimeError('just testing') except RuntimeError: pass try: raise KeyboardInterrupt except KeyboardInterrupt: pass - def testImport(self): + def test_import(self): # 'import' dotted_as_names import sys import time, sys @@ -473,13 +512,13 @@ class GrammarTests(unittest.TestCase): from sys import (path, argv) from sys import (path, argv,) - def testGlobal(self): + def test_global(self): # 'global' NAME (',' NAME)* global a global a, b global one, two, three, four, five, six, seven, eight, nine, ten - def testNonlocal(self): + def test_nonlocal(self): # 'nonlocal' NAME (',' NAME)* x = 0 y = 0 @@ -487,7 +526,7 @@ class GrammarTests(unittest.TestCase): nonlocal x nonlocal x, y - def testAssert(self): + def test_assert(self): # assertTruestmt: 'assert' test [',' test] assert 1 assert 1, 1 @@ -526,7 +565,7 @@ class GrammarTests(unittest.TestCase): ### compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | funcdef | classdef # Tested below - def testIf(self): + def test_if(self): # 'if' test ':' suite ('elif' test ':' suite)* ['else' ':' suite] if 1: pass if 1: pass @@ -539,7 +578,7 @@ class GrammarTests(unittest.TestCase): elif 0: pass else: pass - def testWhile(self): + def test_while(self): # 'while' test ':' suite ['else' ':' suite] while 0: pass while 0: pass @@ -554,7 +593,7 @@ class GrammarTests(unittest.TestCase): x = 2 self.assertEqual(x, 2) - def testFor(self): + def test_for(self): # 'for' exprlist 'in' exprlist ':' suite ['else' ':' suite] for i in 1, 2, 3: pass for i, j, k in (): pass @@ -581,7 +620,7 @@ class GrammarTests(unittest.TestCase): result.append(x) self.assertEqual(result, [1, 2, 3]) - def testTry(self): + def test_try(self): ### try_stmt: 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite] ### | 'try' ':' suite 'finally' ':' suite ### except_clause: 'except' [expr ['as' expr]] @@ -604,7 +643,7 @@ class GrammarTests(unittest.TestCase): try: pass finally: pass - def testSuite(self): + def test_suite(self): # simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT if 1: pass if 1: @@ -619,7 +658,7 @@ class GrammarTests(unittest.TestCase): pass # - def testTest(self): + def test_test(self): ### and_test ('or' and_test)* ### and_test: not_test ('and' not_test)* ### not_test: 'not' not_test | comparison @@ -630,7 +669,7 @@ class GrammarTests(unittest.TestCase): if not 1 and 1 and 1: pass if 1 and 1 or 1 and 1 and 1 or not 1 and 1: pass - def testComparison(self): + def test_comparison(self): ### comparison: expr (comp_op expr)* ### comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is'|'is' 'not' if 1: pass @@ -647,36 +686,36 @@ class GrammarTests(unittest.TestCase): if 1 not in (): pass if 1 < 1 > 1 == 1 >= 1 <= 1 != 1 in 1 not in 1 is 1 is not 1: pass - def testBinaryMaskOps(self): + def test_binary_mask_ops(self): x = 1 & 1 x = 1 ^ 1 x = 1 | 1 - def testShiftOps(self): + def test_shift_ops(self): x = 1 << 1 x = 1 >> 1 x = 1 << 1 >> 1 - def testAdditiveOps(self): + def test_additive_ops(self): x = 1 x = 1 + 1 x = 1 - 1 - 1 x = 1 - 1 + 1 - 1 + 1 - def testMultiplicativeOps(self): + def test_multiplicative_ops(self): x = 1 * 1 x = 1 / 1 x = 1 % 1 x = 1 / 1 * 1 % 1 - def testUnaryOps(self): + def test_unary_ops(self): x = +1 x = -1 x = ~1 x = ~1 ^ 1 & 1 | 1 & 1 ^ -1 x = -1*1/1 + 1*1 - ---1*1 - def testSelectors(self): + def test_selectors(self): ### trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME ### subscript: expr | [expr] ':' [expr] @@ -706,7 +745,7 @@ class GrammarTests(unittest.TestCase): L.sort(key=lambda x: x if isinstance(x, tuple) else ()) self.assertEqual(str(L), '[1, (1,), (1, 2), (1, 2, 3)]') - def testAtoms(self): + def test_atoms(self): ### atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictsetmaker] '}' | NAME | NUMBER | STRING ### dictsetmaker: (test ':' test (',' test ':' test)* [',']) | (test (',' test)* [',']) @@ -741,7 +780,7 @@ class GrammarTests(unittest.TestCase): ### testlist: test (',' test)* [','] # These have been exercised enough above - def testClassdef(self): + def test_classdef(self): # 'class' NAME ['(' [testlist] ')'] ':' suite class B: pass class B2(): pass @@ -760,14 +799,14 @@ class GrammarTests(unittest.TestCase): @class_decorator class G: pass - def testDictcomps(self): + def test_dictcomps(self): # dictorsetmaker: ( (test ':' test (comp_for | # (',' test ':' test)* [','])) | # (test (comp_for | (',' test)* [','])) ) nums = [1, 2, 3] self.assertEqual({i:i+1 for i in nums}, {1: 2, 2: 3, 3: 4}) - def testListcomps(self): + def test_listcomps(self): # list comprehension tests nums = [1, 2, 3, 4, 5] strs = ["Apple", "Banana", "Coconut"] @@ -830,7 +869,7 @@ class GrammarTests(unittest.TestCase): self.assertEqual(x, [('Boeing', 'Airliner'), ('Boeing', 'Engine'), ('Ford', 'Engine'), ('Macdonalds', 'Cheeseburger')]) - def testGenexps(self): + def test_genexps(self): # generator expression tests g = ([x for x in range(10)] for x in range(1)) self.assertEqual(next(g), [x for x in range(10)]) @@ -865,7 +904,7 @@ class GrammarTests(unittest.TestCase): check_syntax_error(self, "foo(x for x in range(10), 100)") check_syntax_error(self, "foo(100, x for x in range(10))") - def testComprehensionSpecials(self): + def test_comprehension_specials(self): # test for outmost iterable precomputation x = 10; g = (i for i in range(x)); x = 5 self.assertEqual(len(list(g)), 10) @@ -904,7 +943,7 @@ class GrammarTests(unittest.TestCase): with manager() as x, manager(): pass - def testIfElseExpr(self): + def test_if_else_expr(self): # Test ifelse expressions in various cases def _checkeval(msg, ret): "helper to check that evaluation of expressions is done correctly" |