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19ead4a5cb
Tests pass or fail gracefully on older PostgreSQL versions. If unittest2 is available, skip tests instead of printing warnings.
87 lines
2.8 KiB
Python
Executable File
87 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python
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from testutils import unittest
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import psycopg2
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import psycopg2.extensions
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import tests
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class QuotingTestCase(unittest.TestCase):
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r"""Checks the correct quoting of strings and binary objects.
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Since ver. 8.1, PostgreSQL is moving towards SQL standard conforming
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strings, where the backslash (\) is treated as literal character,
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not as escape. To treat the backslash as a C-style escapes, PG supports
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the E'' quotes.
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This test case checks that the E'' quotes are used whenever they are
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needed. The tests are expected to pass with all PostgreSQL server versions
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(currently tested with 7.4 <= PG <= 8.3beta) and with any
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'standard_conforming_strings' server parameter value.
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The tests also check that no warning is raised ('escape_string_warning'
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should be on).
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http://www.postgresql.org/docs/8.1/static/sql-syntax.html#SQL-SYNTAX-STRINGS
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http://www.postgresql.org/docs/8.1/static/runtime-config-compatible.html
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"""
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def setUp(self):
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self.conn = psycopg2.connect(tests.dsn)
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def tearDown(self):
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self.conn.close()
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def test_string(self):
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data = """some data with \t chars
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to escape into, 'quotes' and \\ a backslash too.
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"""
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data += "".join(map(chr, range(1,127)))
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curs = self.conn.cursor()
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curs.execute("SELECT %s;", (data,))
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res = curs.fetchone()[0]
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self.assertEqual(res, data)
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self.assert_(not self.conn.notices)
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def test_binary(self):
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data = """some data with \000\013 binary
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stuff into, 'quotes' and \\ a backslash too.
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"""
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data += "".join(map(chr, range(256)))
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curs = self.conn.cursor()
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curs.execute("SELECT %s::bytea;", (psycopg2.Binary(data),))
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res = str(curs.fetchone()[0])
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self.assertEqual(res, data)
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self.assert_(not self.conn.notices)
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def test_unicode(self):
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curs = self.conn.cursor()
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curs.execute("SHOW server_encoding")
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server_encoding = curs.fetchone()[0]
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if server_encoding != "UTF8":
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return self.skipTest(
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"Unicode test skipped since server encoding is %s"
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% server_encoding)
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data = u"""some data with \t chars
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to escape into, 'quotes', \u20ac euro sign and \\ a backslash too.
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"""
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data += u"".join(map(unichr, [ u for u in range(1,65536)
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if not 0xD800 <= u <= 0xDFFF ])) # surrogate area
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self.conn.set_client_encoding('UNICODE')
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psycopg2.extensions.register_type(psycopg2.extensions.UNICODE)
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curs.execute("SELECT %s::text;", (data,))
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res = curs.fetchone()[0]
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self.assertEqual(res, data)
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self.assert_(not self.conn.notices)
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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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