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bpo-43625: Enhance csv sniffer has_headers() to be more accurate (GH-26939)

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andrei kulakov 2021-07-30 13:10:37 -04:00 • committed by GitHub
parent e3f877c32d
commit ceea579ccc
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4 changed files with 56 additions and 8 deletions
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36
Lib/test/test_csv.py
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@ -1020,6 +1020,42 @@ Stonecutters Seafood and Chop House+ Lemont+ IL+ 12/19/02+ Week Back
'Stonecutters ''Seafood'' and Chop House'+ 'Lemont'+ 'IL'+ '12/19/02'+ 'Week Back'
"""
sample10 = dedent("""
abc,def
ghijkl,mno
ghi,jkl
""")
sample11 = dedent("""
abc,def
ghijkl,mnop
ghi,jkl
""")
sample12 = dedent(""""time","forces"
1,1.5
0.5,5+0j
0,0
1+1j,6
""")
sample13 = dedent(""""time","forces"
0,0
1,2
a,b
""")
def test_issue43625(self):
sniffer = csv.Sniffer()
self.assertTrue(sniffer.has_header(self.sample12))
self.assertFalse(sniffer.has_header(self.sample13))
def test_has_header_strings(self):
"More to document existing (unexpected?) behavior than anything else."
sniffer = csv.Sniffer()
self.assertFalse(sniffer.has_header(self.sample10))
self.assertFalse(sniffer.has_header(self.sample11))
def test_has_header(self):
sniffer = csv.Sniffer()
self.assertIs(sniffer.has_header(self.sample1), False)