mirror of
https://github.com/psycopg/psycopg2.git
synced 2024-09-21 03:08:57 +03:00
c8aef26e15
Don't rely on Postgres casting the literal according to the context: this doesn't work e.g. passing the object as function argument where a function with the same name but taking a text exists. It doesn't work either when the object is in an ARRAY construct. Added test to check the type is respected in a complete Py -> PG -> Py roundtrip without context. Bug and solution reported by Peter Eisentraut.
138 lines
5.5 KiB
Python
Executable File
138 lines
5.5 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# types_basic.py - tests for basic types conversions
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#
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# Copyright (C) 2004-2010 Federico Di Gregorio <fog@debian.org>
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#
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# psycopg2 is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# In addition, as a special exception, the copyright holders give
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# permission to link this program with the OpenSSL library (or with
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# modified versions of OpenSSL that use the same license as OpenSSL),
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# and distribute linked combinations including the two.
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#
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# You must obey the GNU Lesser General Public License in all respects for
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# all of the code used other than OpenSSL.
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#
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# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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try:
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import decimal
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except:
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pass
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import sys
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import unittest
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import psycopg2
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import tests
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class TypesBasicTests(unittest.TestCase):
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"""Test that all type conversions are working."""
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def setUp(self):
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self.conn = psycopg2.connect(tests.dsn)
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def execute(self, *args):
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curs = self.conn.cursor()
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curs.execute(*args)
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return curs.fetchone()[0]
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def testQuoting(self):
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s = "Quote'this\\! ''ok?''"
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self.failUnless(self.execute("SELECT %s AS foo", (s,)) == s,
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"wrong quoting: " + s)
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def testUnicode(self):
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s = u"Quote'this\\! ''ok?''"
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self.failUnless(self.execute("SELECT %s AS foo", (s,)) == s,
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"wrong unicode quoting: " + s)
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def testNumber(self):
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s = self.execute("SELECT %s AS foo", (1971,))
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self.failUnless(s == 1971, "wrong integer quoting: " + str(s))
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s = self.execute("SELECT %s AS foo", (1971L,))
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self.failUnless(s == 1971L, "wrong integer quoting: " + str(s))
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if sys.version_info[0] < 2 or sys.version_info[1] < 4:
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s = self.execute("SELECT %s AS foo", (19.10,))
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self.failUnless(abs(s - 19.10) < 0.001,
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"wrong float quoting: " + str(s))
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def testDecimal(self):
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if sys.version_info[0] >= 2 and sys.version_info[1] >= 4:
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s = self.execute("SELECT %s AS foo", (decimal.Decimal("19.10"),))
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self.failUnless(s - decimal.Decimal("19.10") == 0,
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"wrong decimal quoting: " + str(s))
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s = self.execute("SELECT %s AS foo", (decimal.Decimal("NaN"),))
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self.failUnless(str(s) == "NaN", "wrong decimal quoting: " + str(s))
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self.failUnless(type(s) == decimal.Decimal, "wrong decimal conversion: " + repr(s))
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s = self.execute("SELECT %s AS foo", (decimal.Decimal("infinity"),))
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self.failUnless(str(s) == "NaN", "wrong decimal quoting: " + str(s))
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self.failUnless(type(s) == decimal.Decimal, "wrong decimal conversion: " + repr(s))
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s = self.execute("SELECT %s AS foo", (decimal.Decimal("-infinity"),))
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self.failUnless(str(s) == "NaN", "wrong decimal quoting: " + str(s))
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self.failUnless(type(s) == decimal.Decimal, "wrong decimal conversion: " + repr(s))
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def testFloat(self):
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s = self.execute("SELECT %s AS foo", (float("nan"),))
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self.failUnless(str(s) == "nan", "wrong float quoting: " + str(s))
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self.failUnless(type(s) == float, "wrong float conversion: " + repr(s))
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s = self.execute("SELECT %s AS foo", (float("inf"),))
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self.failUnless(str(s) == "inf", "wrong float quoting: " + str(s))
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self.failUnless(type(s) == float, "wrong float conversion: " + repr(s))
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def testBinary(self):
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s = ''.join([chr(x) for x in range(256)])
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b = psycopg2.Binary(s)
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buf = self.execute("SELECT %s::bytea AS foo", (b,))
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self.failUnless(str(buf) == s, "wrong binary quoting")
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def testBinaryEmptyString(self):
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# test to make sure an empty Binary is converted to an empty string
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b = psycopg2.Binary('')
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self.assertEqual(str(b), "''::bytea")
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def testBinaryRoundTrip(self):
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# test to make sure buffers returned by psycopg2 are
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# understood by execute:
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s = ''.join([chr(x) for x in range(256)])
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buf = self.execute("SELECT %s::bytea AS foo", (psycopg2.Binary(s),))
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buf2 = self.execute("SELECT %s::bytea AS foo", (buf,))
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self.failUnless(str(buf2) == s, "wrong binary quoting")
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def testArray(self):
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s = self.execute("SELECT %s AS foo", ([[1,2],[3,4]],))
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self.failUnless(s == [[1,2],[3,4]], "wrong array quoting " + str(s))
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s = self.execute("SELECT %s AS foo", (['one', 'two', 'three'],))
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self.failUnless(s == ['one', 'two', 'three'],
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"wrong array quoting " + str(s))
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def testTypeRoundtripBinary(self):
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o1 = buffer("".join(map(chr, range(256))))
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(type(o1), type(o2))
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# Test with an empty buffer
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o1 = buffer("")
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(type(o1), type(o2))
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def testTypeRoundtripBinaryArray(self):
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o1 = buffer("".join(map(chr, range(256))))
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o1 = [o1]
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(type(o1[0]), type(o2[0]))
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def test_suite():
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return unittest.TestLoader().loadTestsFromName(__name__)
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if __name__ == "__main__":
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unittest.main()
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