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Added tests to avoid regression on bug #125375. 

roundtrip():  Show the offending syntax tree when things break; this makes
              it a little easier to debug the module by adding test cases.

(Still need better tests for this module, but there's not enough time
 today.)
This commit is contained in:
Fred Drake 2000-12-11 22:12:09 +00:00
parent b6429a2020
commit e1578ce204
2 changed files with 34 additions and 1 deletions
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14
Lib/test/output/test_parser
View File

@ -15,6 +15,18 @@ expr: foo(a, b, c, *args)
expr: foo(a, b, c, *args, **kw) expr: foo(a, b, c, *args, **kw)
expr: foo(a, b, c, **kw) expr: foo(a, b, c, **kw)
expr: foo + bar expr: foo + bar
expr: lambda: 0
expr: lambda x: 0
expr: lambda *y: 0
expr: lambda *y, **z: 0
expr: lambda **z: 0
expr: lambda x, y: 0
expr: lambda foo=bar: 0
expr: lambda foo=bar, spaz=nifty+spit: 0
expr: lambda foo=bar, **z: 0
expr: lambda foo=bar, blaz=blat+2, **z: 0
expr: lambda foo=bar, blaz=blat+2, *y, **z: 0
expr: lambda x, *y, **z: 0
Statements: Statements:
suite: print suite: print
@ -37,6 +49,8 @@ suite: a ^= b
suite: a <<= b suite: a <<= b
suite: a >>= b suite: a >>= b
suite: a **= b suite: a **= b
suite: def f(): pass
suite: def f(foo=bar): pass
Invalid parse trees: Invalid parse trees:

21
Lib/test/test_parser.py
View File

@ -15,7 +15,12 @@
def roundtrip(f, s): def roundtrip(f, s):
st1 = f(s) st1 = f(s)
t = st1.totuple() t = st1.totuple()
st2 = parser.sequence2ast(t) try:
st2 = parser.sequence2ast(t)
except parser.ParserError:
print "Failing syntax tree:"
pprint.pprint(t)
raise
def roundtrip_fromfile(filename): def roundtrip_fromfile(filename):
roundtrip(suite, open(filename).read()) roundtrip(suite, open(filename).read())
@ -46,6 +51,18 @@ def test_suite(s):
test_expr("foo(a, b, c, *args, **kw)") test_expr("foo(a, b, c, *args, **kw)")
test_expr("foo(a, b, c, **kw)") test_expr("foo(a, b, c, **kw)")
test_expr("foo + bar") test_expr("foo + bar")
test_expr("lambda: 0")
test_expr("lambda x: 0")
test_expr("lambda *y: 0")
test_expr("lambda *y, **z: 0")
test_expr("lambda **z: 0")
test_expr("lambda x, y: 0")
test_expr("lambda foo=bar: 0")
test_expr("lambda foo=bar, spaz=nifty+spit: 0")
test_expr("lambda foo=bar, **z: 0")
test_expr("lambda foo=bar, blaz=blat+2, **z: 0")
test_expr("lambda foo=bar, blaz=blat+2, *y, **z: 0")
test_expr("lambda x, *y, **z: 0")
print print
print "Statements:" print "Statements:"
@ -71,6 +88,8 @@ def test_suite(s):
test_suite("a <<= b") test_suite("a <<= b")
test_suite("a >>= b") test_suite("a >>= b")
test_suite("a **= b") test_suite("a **= b")
test_suite("def f(): pass")
test_suite("def f(foo=bar): pass")
#d = os.path.dirname(os.__file__) #d = os.path.dirname(os.__file__)
#roundtrip_fromfile(os.path.join(d, "os.py")) #roundtrip_fromfile(os.path.join(d, "os.py"))