mirror of
https://github.com/psycopg/psycopg2.git
synced 2024-11-26 10:53:44 +03:00
264 lines
9.4 KiB
Python
Executable File
264 lines
9.4 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 testutils
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from testutils import unittest
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from testconfig import dsn
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import psycopg2
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from psycopg2.extensions import b
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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(dsn)
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def tearDown(self):
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self.conn.close()
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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] < (2, 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 testBoolean(self):
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x = self.execute("SELECT %s as foo", (False,))
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self.assert_(x is False)
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x = self.execute("SELECT %s as foo", (True,))
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self.assert_(x is True)
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def testDecimal(self):
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if sys.version_info[0:2] >= (2, 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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else:
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return self.skipTest("decimal not available")
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def testFloatNan(self):
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try:
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float("nan")
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except ValueError:
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return self.skipTest("nan not available on this platform")
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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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def testFloatInf(self):
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try:
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self.execute("select 'inf'::float")
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except psycopg2.DataError:
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return self.skipTest("inf::float not available on the server")
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except ValueError:
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return self.skipTest("inf not available on this platform")
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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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if sys.version_info[0] < 3:
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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.assertEqual(s, str(buf))
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else:
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s = bytes(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.assertEqual(s, buf)
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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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if sys.version_info[0] < 3:
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b = psycopg2.Binary('')
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self.assertEqual(str(b), "''::bytea")
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else:
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b = psycopg2.Binary(bytes([]))
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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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if sys.version_info[0] < 3:
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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.assertEqual(s, str(buf2))
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else:
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s = bytes(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.assertEqual(s, buf2)
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def testArray(self):
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s = self.execute("SELECT %s AS foo", ([],))
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self.failUnlessEqual(s, [])
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s = self.execute("SELECT %s AS foo", ([[1,2],[3,4]],))
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self.failUnlessEqual(s, [[1,2],[3,4]])
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s = self.execute("SELECT %s AS foo", (['one', 'two', 'three'],))
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self.failUnlessEqual(s, ['one', 'two', 'three'])
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@testutils.skip_on_python3
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def testTypeRoundtripBuffer(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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@testutils.skip_on_python3
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def testTypeRoundtripBufferArray(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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@testutils.skip_on_python2
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def testTypeRoundtripBytes(self):
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o1 = bytes(range(256))
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(memoryview, type(o2))
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# Test with an empty buffer
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o1 = bytes([])
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(memoryview, type(o2))
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@testutils.skip_on_python2
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def testTypeRoundtripBytesArray(self):
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o1 = bytes(range(256))
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o1 = [o1]
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(memoryview, type(o2[0]))
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@testutils.skip_on_python2
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def testAdaptBytearray(self):
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o1 = bytearray(range(256))
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(memoryview, type(o2))
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# Test with an empty buffer
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o1 = bytearray([])
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(memoryview, type(o2))
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@testutils.skip_on_python2
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def testAdaptMemoryview(self):
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o1 = memoryview(bytes(range(256)))
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(memoryview, type(o2))
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# Test with an empty buffer
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o1 = memoryview(bytes([]))
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o2 = self.execute("select %s;", (o1,))
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self.assertEqual(memoryview, type(o2))
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class AdaptSubclassTest(unittest.TestCase):
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def test_adapt_subtype(self):
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from psycopg2.extensions import adapt
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class Sub(str): pass
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s1 = "hel'lo"
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s2 = Sub(s1)
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self.assertEqual(adapt(s1).getquoted(), adapt(s2).getquoted())
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def test_adapt_most_specific(self):
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from psycopg2.extensions import adapt, register_adapter, AsIs
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class A(object): pass
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class B(A): pass
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class C(B): pass
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register_adapter(A, lambda a: AsIs("a"))
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register_adapter(B, lambda b: AsIs("b"))
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self.assertEqual(b('b'), adapt(C()).getquoted())
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@testutils.skip_on_python3
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def test_no_mro_no_joy(self):
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from psycopg2.extensions import adapt, register_adapter, AsIs
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class A: pass
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class B(A): pass
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register_adapter(A, lambda a: AsIs("a"))
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self.assertRaises(psycopg2.ProgrammingError, adapt, B())
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@testutils.skip_on_python2
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def test_adapt_subtype_3(self):
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from psycopg2.extensions import adapt, register_adapter, AsIs
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class A: pass
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class B(A): pass
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register_adapter(A, lambda a: AsIs("a"))
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self.assertEqual(b("a"), adapt(B()).getquoted())
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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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