bpo-32482: Improve syntax and grammar tests. (#5085)
diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index 0a61462..103b4c1 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -73,13 +73,12 @@
>>> "abc" = 1
Traceback (most recent call last):
- File "<doctest test.test_syntax[8]>", line 1
+ File "<doctest test.test_syntax[9]>", line 1
SyntaxError: can't assign to literal
->>> `1` = 1
+>>> b"" = 1
Traceback (most recent call last):
- File "<doctest test.test_syntax[10]>", line 1
-SyntaxError: can't assign to repr
+SyntaxError: can't assign to literal
If the left-hand side of an assignment is a list or tuple, an illegal
expression inside that contain should still cause a syntax error.
@@ -148,7 +147,7 @@
From ast_for_call():
->>> def f(it, *varargs):
+>>> def f(it, *varargs, **kwargs):
... return list(it)
>>> L = range(10)
>>> f(x for x in L)
@@ -157,73 +156,179 @@
Traceback (most recent call last):
File "<doctest test.test_syntax[23]>", line 1
SyntaxError: Generator expression must be parenthesized if not sole argument
+>>> f(x for x in L, y=1)
+Traceback (most recent call last):
+SyntaxError: Generator expression must be parenthesized if not sole argument
+>>> f(L, x for x in L)
+Traceback (most recent call last):
+SyntaxError: Generator expression must be parenthesized if not sole argument
+>>> f(x for x in L, y for y in L)
+Traceback (most recent call last):
+SyntaxError: Generator expression must be parenthesized if not sole argument
+>>> f(x for x in L,)
+[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> f((x for x in L), 1)
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
->>> f(i0, i1, i2, i3, i4, i5, i6, i7, i8, i9, i10, i11,
-... i12, i13, i14, i15, i16, i17, i18, i19, i20, i21, i22,
-... i23, i24, i25, i26, i27, i28, i29, i30, i31, i32, i33,
-... i34, i35, i36, i37, i38, i39, i40, i41, i42, i43, i44,
-... i45, i46, i47, i48, i49, i50, i51, i52, i53, i54, i55,
-... i56, i57, i58, i59, i60, i61, i62, i63, i64, i65, i66,
-... i67, i68, i69, i70, i71, i72, i73, i74, i75, i76, i77,
-... i78, i79, i80, i81, i82, i83, i84, i85, i86, i87, i88,
-... i89, i90, i91, i92, i93, i94, i95, i96, i97, i98, i99,
-... i100, i101, i102, i103, i104, i105, i106, i107, i108,
-... i109, i110, i111, i112, i113, i114, i115, i116, i117,
-... i118, i119, i120, i121, i122, i123, i124, i125, i126,
-... i127, i128, i129, i130, i131, i132, i133, i134, i135,
-... i136, i137, i138, i139, i140, i141, i142, i143, i144,
-... i145, i146, i147, i148, i149, i150, i151, i152, i153,
-... i154, i155, i156, i157, i158, i159, i160, i161, i162,
-... i163, i164, i165, i166, i167, i168, i169, i170, i171,
-... i172, i173, i174, i175, i176, i177, i178, i179, i180,
-... i181, i182, i183, i184, i185, i186, i187, i188, i189,
-... i190, i191, i192, i193, i194, i195, i196, i197, i198,
-... i199, i200, i201, i202, i203, i204, i205, i206, i207,
-... i208, i209, i210, i211, i212, i213, i214, i215, i216,
-... i217, i218, i219, i220, i221, i222, i223, i224, i225,
-... i226, i227, i228, i229, i230, i231, i232, i233, i234,
-... i235, i236, i237, i238, i239, i240, i241, i242, i243,
-... i244, i245, i246, i247, i248, i249, i250, i251, i252,
-... i253, i254, i255)
+>>> def g(*args, **kwargs):
+... print args, sorted(kwargs.items())
+>>> g(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+... 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+... 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
+... 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
+... 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+... 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
+... 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
+... 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135,
+... 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
+... 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163,
+... 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177,
+... 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
+... 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205,
+... 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
+... 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
+... 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247,
+... 248, 249, 250, 251, 252, 253, 254) # doctest: +ELLIPSIS
+(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 252, 253, 254) []
+>>> g(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+... 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+... 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
+... 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
+... 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+... 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
+... 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
+... 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135,
+... 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
+... 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163,
+... 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177,
+... 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
+... 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205,
+... 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
+... 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
+... 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247,
+... 248, 249, 250, 251, 252, 253, 254, 255)
Traceback (most recent call last):
File "<doctest test.test_syntax[25]>", line 1
SyntaxError: more than 255 arguments
-The actual error cases counts positional arguments, keyword arguments,
-and generator expression arguments separately. This test combines the
-three.
-
->>> f(i0, i1, i2, i3, i4, i5, i6, i7, i8, i9, i10, i11,
-... i12, i13, i14, i15, i16, i17, i18, i19, i20, i21, i22,
-... i23, i24, i25, i26, i27, i28, i29, i30, i31, i32, i33,
-... i34, i35, i36, i37, i38, i39, i40, i41, i42, i43, i44,
-... i45, i46, i47, i48, i49, i50, i51, i52, i53, i54, i55,
-... i56, i57, i58, i59, i60, i61, i62, i63, i64, i65, i66,
-... i67, i68, i69, i70, i71, i72, i73, i74, i75, i76, i77,
-... i78, i79, i80, i81, i82, i83, i84, i85, i86, i87, i88,
-... i89, i90, i91, i92, i93, i94, i95, i96, i97, i98, i99,
-... i100, i101, i102, i103, i104, i105, i106, i107, i108,
-... i109, i110, i111, i112, i113, i114, i115, i116, i117,
-... i118, i119, i120, i121, i122, i123, i124, i125, i126,
-... i127, i128, i129, i130, i131, i132, i133, i134, i135,
-... i136, i137, i138, i139, i140, i141, i142, i143, i144,
-... i145, i146, i147, i148, i149, i150, i151, i152, i153,
-... i154, i155, i156, i157, i158, i159, i160, i161, i162,
-... i163, i164, i165, i166, i167, i168, i169, i170, i171,
-... i172, i173, i174, i175, i176, i177, i178, i179, i180,
-... i181, i182, i183, i184, i185, i186, i187, i188, i189,
-... i190, i191, i192, i193, i194, i195, i196, i197, i198,
-... i199, i200, i201, i202, i203, i204, i205, i206, i207,
-... i208, i209, i210, i211, i212, i213, i214, i215, i216,
-... i217, i218, i219, i220, i221, i222, i223, i224, i225,
-... i226, i227, i228, i229, i230, i231, i232, i233, i234,
-... i235, i236, i237, i238, i239, i240, i241, i242, i243,
-... (x for x in i244), i245, i246, i247, i248, i249, i250, i251,
-... i252=1, i253=1, i254=1, i255=1)
+>>> g(a000=0, a001=1, a002=2, a003=3, a004=4, a005=5, a006=6, a007=7, a008=8,
+... a009=9, a010=10, a011=11, a012=12, a013=13, a014=14, a015=15, a016=16,
+... a017=17, a018=18, a019=19, a020=20, a021=21, a022=22, a023=23, a024=24,
+... a025=25, a026=26, a027=27, a028=28, a029=29, a030=30, a031=31, a032=32,
+... a033=33, a034=34, a035=35, a036=36, a037=37, a038=38, a039=39, a040=40,
+... a041=41, a042=42, a043=43, a044=44, a045=45, a046=46, a047=47, a048=48,
+... a049=49, a050=50, a051=51, a052=52, a053=53, a054=54, a055=55, a056=56,
+... a057=57, a058=58, a059=59, a060=60, a061=61, a062=62, a063=63, a064=64,
+... a065=65, a066=66, a067=67, a068=68, a069=69, a070=70, a071=71, a072=72,
+... a073=73, a074=74, a075=75, a076=76, a077=77, a078=78, a079=79, a080=80,
+... a081=81, a082=82, a083=83, a084=84, a085=85, a086=86, a087=87, a088=88,
+... a089=89, a090=90, a091=91, a092=92, a093=93, a094=94, a095=95, a096=96,
+... a097=97, a098=98, a099=99, a100=100, a101=101, a102=102, a103=103,
+... a104=104, a105=105, a106=106, a107=107, a108=108, a109=109, a110=110,
+... a111=111, a112=112, a113=113, a114=114, a115=115, a116=116, a117=117,
+... a118=118, a119=119, a120=120, a121=121, a122=122, a123=123, a124=124,
+... a125=125, a126=126, a127=127, a128=128, a129=129, a130=130, a131=131,
+... a132=132, a133=133, a134=134, a135=135, a136=136, a137=137, a138=138,
+... a139=139, a140=140, a141=141, a142=142, a143=143, a144=144, a145=145,
+... a146=146, a147=147, a148=148, a149=149, a150=150, a151=151, a152=152,
+... a153=153, a154=154, a155=155, a156=156, a157=157, a158=158, a159=159,
+... a160=160, a161=161, a162=162, a163=163, a164=164, a165=165, a166=166,
+... a167=167, a168=168, a169=169, a170=170, a171=171, a172=172, a173=173,
+... a174=174, a175=175, a176=176, a177=177, a178=178, a179=179, a180=180,
+... a181=181, a182=182, a183=183, a184=184, a185=185, a186=186, a187=187,
+... a188=188, a189=189, a190=190, a191=191, a192=192, a193=193, a194=194,
+... a195=195, a196=196, a197=197, a198=198, a199=199, a200=200, a201=201,
+... a202=202, a203=203, a204=204, a205=205, a206=206, a207=207, a208=208,
+... a209=209, a210=210, a211=211, a212=212, a213=213, a214=214, a215=215,
+... a216=216, a217=217, a218=218, a219=219, a220=220, a221=221, a222=222,
+... a223=223, a224=224, a225=225, a226=226, a227=227, a228=228, a229=229,
+... a230=230, a231=231, a232=232, a233=233, a234=234, a235=235, a236=236,
+... a237=237, a238=238, a239=239, a240=240, a241=241, a242=242, a243=243,
+... a244=244, a245=245, a246=246, a247=247, a248=248, a249=249, a250=250,
+... a251=251, a252=252, a253=253, a254=254) # doctest: +ELLIPSIS
+() [('a000', 0), ('a001', 1), ('a002', 2), ..., ('a253', 253), ('a254', 254)]
+>>> g(a000=0, a001=1, a002=2, a003=3, a004=4, a005=5, a006=6, a007=7, a008=8,
+... a009=9, a010=10, a011=11, a012=12, a013=13, a014=14, a015=15, a016=16,
+... a017=17, a018=18, a019=19, a020=20, a021=21, a022=22, a023=23, a024=24,
+... a025=25, a026=26, a027=27, a028=28, a029=29, a030=30, a031=31, a032=32,
+... a033=33, a034=34, a035=35, a036=36, a037=37, a038=38, a039=39, a040=40,
+... a041=41, a042=42, a043=43, a044=44, a045=45, a046=46, a047=47, a048=48,
+... a049=49, a050=50, a051=51, a052=52, a053=53, a054=54, a055=55, a056=56,
+... a057=57, a058=58, a059=59, a060=60, a061=61, a062=62, a063=63, a064=64,
+... a065=65, a066=66, a067=67, a068=68, a069=69, a070=70, a071=71, a072=72,
+... a073=73, a074=74, a075=75, a076=76, a077=77, a078=78, a079=79, a080=80,
+... a081=81, a082=82, a083=83, a084=84, a085=85, a086=86, a087=87, a088=88,
+... a089=89, a090=90, a091=91, a092=92, a093=93, a094=94, a095=95, a096=96,
+... a097=97, a098=98, a099=99, a100=100, a101=101, a102=102, a103=103,
+... a104=104, a105=105, a106=106, a107=107, a108=108, a109=109, a110=110,
+... a111=111, a112=112, a113=113, a114=114, a115=115, a116=116, a117=117,
+... a118=118, a119=119, a120=120, a121=121, a122=122, a123=123, a124=124,
+... a125=125, a126=126, a127=127, a128=128, a129=129, a130=130, a131=131,
+... a132=132, a133=133, a134=134, a135=135, a136=136, a137=137, a138=138,
+... a139=139, a140=140, a141=141, a142=142, a143=143, a144=144, a145=145,
+... a146=146, a147=147, a148=148, a149=149, a150=150, a151=151, a152=152,
+... a153=153, a154=154, a155=155, a156=156, a157=157, a158=158, a159=159,
+... a160=160, a161=161, a162=162, a163=163, a164=164, a165=165, a166=166,
+... a167=167, a168=168, a169=169, a170=170, a171=171, a172=172, a173=173,
+... a174=174, a175=175, a176=176, a177=177, a178=178, a179=179, a180=180,
+... a181=181, a182=182, a183=183, a184=184, a185=185, a186=186, a187=187,
+... a188=188, a189=189, a190=190, a191=191, a192=192, a193=193, a194=194,
+... a195=195, a196=196, a197=197, a198=198, a199=199, a200=200, a201=201,
+... a202=202, a203=203, a204=204, a205=205, a206=206, a207=207, a208=208,
+... a209=209, a210=210, a211=211, a212=212, a213=213, a214=214, a215=215,
+... a216=216, a217=217, a218=218, a219=219, a220=220, a221=221, a222=222,
+... a223=223, a224=224, a225=225, a226=226, a227=227, a228=228, a229=229,
+... a230=230, a231=231, a232=232, a233=233, a234=234, a235=235, a236=236,
+... a237=237, a238=238, a239=239, a240=240, a241=241, a242=242, a243=243,
+... a244=244, a245=245, a246=246, a247=247, a248=248, a249=249, a250=250,
+... a251=251, a252=252, a253=253, a254=254, a255=255)
Traceback (most recent call last):
- File "<doctest test.test_syntax[26]>", line 1
+ File "<doctest test.test_syntax[35]>", line 1
+SyntaxError: more than 255 arguments
+
+>>> class C:
+... def meth(self, *args):
+... return args
+>>> obj = C()
+>>> obj.meth(
+... 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+... 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+... 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
+... 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
+... 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+... 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
+... 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
+... 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135,
+... 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
+... 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163,
+... 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177,
+... 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
+... 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205,
+... 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
+... 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
+... 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247,
+... 248, 249, 250, 251, 252, 253, 254) # doctest: +ELLIPSIS
+(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 252, 253, 254)
+>>> obj.meth(
+... 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+... 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
+... 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
+... 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
+... 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+... 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
+... 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
+... 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135,
+... 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
+... 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163,
+... 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177,
+... 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
+... 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205,
+... 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
+... 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
+... 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247,
+... 248, 249, 250, 251, 252, 253, 254, 255)
+Traceback (most recent call last):
+ File "<doctest test.test_syntax[38]>", line 1
SyntaxError: more than 255 arguments
>>> f(lambda x: x[0] = 3)
@@ -403,6 +508,16 @@
...
SyntaxError: too many statically nested blocks
+Misuse of the global statement can lead to a few unique syntax errors.
+
+ >>> def f(x):
+ ... global x
+ ... # doctest: +ELLIPSIS
+ Traceback (most recent call last):
+ ...
+ SyntaxError: name 'x' is local and global (<doctest ...>, line 1)
+
+
This tests assignment-context; there was a bug in Python 2.5 where compiling
a complex 'if' (one with 'elif') would fail to notice an invalid suite,
leading to spurious errors.
@@ -458,9 +573,21 @@
File "<doctest test.test_syntax[48]>", line 6
SyntaxError: can't assign to function call
+Test the "raise X, Y[, Z]" form:
+
+ >>> raise ArithmeticError, 'bad number'
+ Traceback (most recent call last):
+ ...
+ ArithmeticError: bad number
+ >>> raise ArithmeticError, 'bad number', None
+ Traceback (most recent call last):
+ ...
+ ArithmeticError: bad number
+
+
>>> f(a=23, a=234)
Traceback (most recent call last):
- ...
+ ...
File "<doctest test.test_syntax[49]>", line 1
SyntaxError: keyword argument repeated
@@ -476,6 +603,12 @@
File "<doctest test.test_syntax[50]>", line 1
SyntaxError: can't assign to literal
+Corner-case that used to fail to raise the correct error:
+
+ >>> def f(x=lambda __debug__:0): pass
+ Traceback (most recent call last):
+ SyntaxError: cannot assign to __debug__
+
Corner-case that used to crash:
>>> def f(*xx, **__debug__): pass
@@ -488,12 +621,12 @@
import unittest
import warnings
-from test import test_support
+from test import support
class SyntaxTestCase(unittest.TestCase):
def _check_error(self, code, errtext,
- filename="<testcase>", mode="exec", subclass=None):
+ filename="<testcase>", mode="exec", subclass=None, lineno=None, offset=None):
"""Check that compiling code raises SyntaxError with errtext.
errtest is a regular expression that must be present in the
@@ -501,13 +634,19 @@
is the expected subclass of SyntaxError (e.g. IndentationError).
"""
try:
- compile(code, filename, mode)
- except SyntaxError, err:
+ compile(code, filename or "<testcase>", mode)
+ except SyntaxError as err:
if subclass and not isinstance(err, subclass):
self.fail("SyntaxError is not a %s" % subclass.__name__)
mo = re.search(errtext, str(err))
if mo is None:
self.fail("%s did not contain '%r'" % (err, errtext,))
+ if filename is not None:
+ self.assertEqual(err.filename, filename)
+ if lineno is not None:
+ self.assertEqual(err.lineno, lineno)
+ if offset is not None:
+ self.assertEqual(err.offset, offset)
else:
self.fail("compile() did not raise SyntaxError")
@@ -515,6 +654,11 @@
self._check_error("def f((x)=23): pass",
"parenthesized arg with default")
+ def test_assign_repr(self):
+ with support.check_py3k_warnings(('backquote not supported',
+ SyntaxWarning)):
+ self._check_error("`1` = 1", "assign to repr")
+
def test_assign_call(self):
self._check_error("f() = 1", "assign")
@@ -524,28 +668,48 @@
def test_global_err_then_warn(self):
# Bug tickler: The SyntaxError raised for one global statement
# shouldn't be clobbered by a SyntaxWarning issued for a later one.
- source = re.sub('(?m)^ *:', '', """\
- :def error(a):
- : global a # SyntaxError
- :def warning():
- : b = 1
- : global b # SyntaxWarning
- :""")
- warnings.filterwarnings(action='ignore', category=SyntaxWarning)
- self._check_error(source, "global")
- warnings.filters.pop(0)
+ source = """if 1:
+ def error(a):
+ global a # SyntaxError
+ def warning():
+ b = 1
+ global b # SyntaxWarning
+ """
+ with support.check_warnings((".*assigned to before global declaration",
+ SyntaxWarning)):
+ self._check_error(source, "local and global", lineno=2)
+
+ def test_misuse_global(self):
+ source = """if 1:
+ def f():
+ print(x)
+ global x
+ """
+ with support.check_warnings(('.*used prior to global declaration',
+ SyntaxWarning)):
+ compile(source, '<testcase>', 'exec')
+
+ def test_misuse_global_2(self):
+ source = """if 1:
+ def f():
+ x = 1
+ global x
+ """
+ with support.check_warnings(('.*assigned to before global declaration',
+ SyntaxWarning)):
+ compile(source, '<testcase>', 'exec')
def test_break_outside_loop(self):
self._check_error("break", "outside loop")
def test_delete_deref(self):
- source = re.sub('(?m)^ *:', '', """\
- :def foo(x):
- : def bar():
- : print x
- : del x
- :""")
- self._check_error(source, "nested scope")
+ source = """if 1:
+ def foo(x):
+ def bar():
+ print(x)
+ del x
+ """
+ self._check_error(source, "nested scope", filename=None)
def test_unexpected_indent(self):
self._check_error("foo()\n bar()\n", "unexpected indent",
@@ -564,11 +728,9 @@
self._check_error("int(base=10, '2')", "non-keyword arg")
def test_main():
- test_support.run_unittest(SyntaxTestCase)
+ support.run_unittest(SyntaxTestCase)
from test import test_syntax
- with test_support.check_py3k_warnings(("backquote not supported",
- SyntaxWarning)):
- test_support.run_doctest(test_syntax, verbosity=True)
+ support.run_doctest(test_syntax, verbosity=True)
if __name__ == "__main__":
test_main()