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#!/usr/bin/python
# -*- coding: latin-1 -*-

usage = """\
usage: %prog [options] connection_string

Unit tests for SQL Server. To use, pass a connection string as the parameter.
The tests will create and drop tables t1 and t2 as necessary.

These run using the version from the 'build' directory, not the version
installed into the Python directories. You must run python setup.py build
before running the tests.

You can also put the connection string into a setup.cfg file in the root of the project
(the same one setup.py would use) like so:

[sqlservertests]
connection-string=DRIVER={SQL Server};SERVER=localhost;UID=uid;PWD=pwd;DATABASE=db

The connection string above will use the 2000/2005 driver, even if SQL Server 2008
is installed:

2000: DRIVER={SQL Server}
2005: DRIVER={SQL Server}
2008: DRIVER={SQL Server Native Client 10.0}
"""

import sys, os, re
import unittest
from decimal import Decimal
from datetime import datetime, date, time
from os.path import join, getsize, dirname, abspath
from testutils import *

_TESTSTR = '0123456789-abcdefghijklmnopqrstuvwxyz-'

def _generate_test_string(length):
    """
Returns a string of composed of `seed` to make a string `length` characters long.

To enhance performance, there are 3 ways data is read, based on the length of the value, so most data types are
tested with 3 lengths. This function helps us generate the test data.

We use a recognizable data set instead of a single character to make it less likely that "overlap" errors will
be hidden and to help us manually identify where a break occurs.
"""
    if length <= len(_TESTSTR):
        return _TESTSTR[:length]

    c = (length + len(_TESTSTR)-1) / len(_TESTSTR)
    v = _TESTSTR * c
    return v[:length]

class SqlServerTestCase(unittest.TestCase):

    SMALL_FENCEPOST_SIZES = [ 0, 1, 255, 256, 510, 511, 512, 1023, 1024, 2047, 2048, 4000 ]
    LARGE_FENCEPOST_SIZES = [ 4095, 4096, 4097, 10 * 1024, 20 * 1024 ]

    ANSI_FENCEPOSTS = [ _generate_test_string(size) for size in SMALL_FENCEPOST_SIZES ]
    UNICODE_FENCEPOSTS = [ unicode(s) for s in ANSI_FENCEPOSTS ]
    IMAGE_FENCEPOSTS = ANSI_FENCEPOSTS + [ _generate_test_string(size) for size in LARGE_FENCEPOST_SIZES ]

    def __init__(self, method_name, connection_string):
        unittest.TestCase.__init__(self, method_name)
        self.connection_string = connection_string

    def get_sqlserver_version(self):
        """
Returns the major version: 8-->2000, 9==2005, 10 == SS2008
"""
        self.cursor.execute("exec master..xp_msver 'ProductVersion'")
        row = self.cursor.fetchone()
        return int(row.Character_Value.split('.', 1)[0])

    def setUp(self):
        self.cnxn = pyodbc.connect(self.connection_string)
        self.cursor = self.cnxn.cursor()

        for i in range(3):
            try:
                self.cursor.execute("drop table t%d" % i)
                self.cnxn.commit()
            except:
                pass

        for i in range(3):
            try:
                self.cursor.execute("drop procedure proc%d" % i)
                self.cnxn.commit()
            except:
                pass

        self.cnxn.rollback()

    def tearDown(self):
        try:
            self.cursor.close()
            self.cnxn.close()
        except:
            # If we've already closed the cursor or connection, exceptions are thrown.
            pass

    def test_multiple_bindings(self):
        "More than one bind and select on a cursor"
        self.cursor.execute("create table t1(n int)")
        self.cursor.execute("insert into t1 values (?)", 1)
        self.cursor.execute("insert into t1 values (?)", 2)
        self.cursor.execute("insert into t1 values (?)", 3)
        for i in range(3):
            self.cursor.execute("select n from t1 where n < ?", 10)
            self.cursor.execute("select n from t1 where n < 3")
        

    def test_different_bindings(self):
        self.cursor.execute("create table t1(n int)")
        self.cursor.execute("create table t2(d datetime)")
        self.cursor.execute("insert into t1 values (?)", 1)
        self.cursor.execute("insert into t2 values (?)", datetime.now())

    def test_datasources(self):
        p = pyodbc.dataSources()
        self.assert_(isinstance(p, dict))

    def test_getinfo_string(self):
        value = self.cnxn.getinfo(pyodbc.SQL_CATALOG_NAME_SEPARATOR)
        self.assert_(isinstance(value, str))

    def test_getinfo_bool(self):
        value = self.cnxn.getinfo(pyodbc.SQL_ACCESSIBLE_TABLES)
        self.assert_(isinstance(value, bool))

    def test_getinfo_int(self):
        value = self.cnxn.getinfo(pyodbc.SQL_DEFAULT_TXN_ISOLATION)
        self.assert_(isinstance(value, (int, long)))

    def test_getinfo_smallint(self):
        value = self.cnxn.getinfo(pyodbc.SQL_CONCAT_NULL_BEHAVIOR)
        self.assert_(isinstance(value, int))

    def test_noscan(self):
        self.assertEqual(self.cursor.noscan, False)
        self.cursor.noscan = True
        self.assertEqual(self.cursor.noscan, True)

    def test_guid(self):
        self.cursor.execute("create table t1(g1 uniqueidentifier)")
        self.cursor.execute("insert into t1 values (newid())")
        v = self.cursor.execute("select * from t1").fetchone()[0]
        self.assertEqual(type(v), str)
        self.assertEqual(len(v), 36)

    def test_nextset(self):
        self.cursor.execute("create table t1(i int)")
        for i in range(4):
            self.cursor.execute("insert into t1(i) values(?)", i)

        self.cursor.execute("select i from t1 where i < 2 order by i; select i from t1 where i >= 2 order by i")
        
        for i, row in enumerate(self.cursor):
            self.assertEqual(i, row.i)

        self.assertEqual(self.cursor.nextset(), True)

        for i, row in enumerate(self.cursor):
            self.assertEqual(i + 2, row.i)

    def test_fixed_unicode(self):
        value = u"t\xebsting"
        self.cursor.execute("create table t1(s nchar(7))")
        self.cursor.execute("insert into t1 values(?)", u"t\xebsting")
        v = self.cursor.execute("select * from t1").fetchone()[0]
        self.assertEqual(type(v), unicode)
        self.assertEqual(len(v), len(value)) # If we alloc'd wrong, the test below might work because of an embedded NULL
        self.assertEqual(v, value)


    def _test_strtype(self, sqltype, value, colsize=None):
        """
The implementation for string, Unicode, and binary tests.
"""
        assert colsize is None or (value is None or colsize >= len(value))

        if colsize:
            sql = "create table t1(s %s(%s))" % (sqltype, colsize)
        else:
            sql = "create table t1(s %s)" % sqltype

        self.cursor.execute(sql)
        self.cursor.execute("insert into t1 values(?)", value)
        v = self.cursor.execute("select * from t1").fetchone()[0]
        self.assertEqual(type(v), type(value))

        if value is not None:
            self.assertEqual(len(v), len(value))

        self.assertEqual(v, value)

    #
    # varchar
    #

    def test_varchar_null(self):
        self._test_strtype('varchar', None, 100)

    # Generate a test for each fencepost size: test_varchar_0, etc.
    def _maketest(value):
        def t(self):
            self._test_strtype('varchar', value, len(value))
        return t
    for value in ANSI_FENCEPOSTS:
        locals()['test_varchar_%s' % len(value)] = _maketest(value)

    def test_varchar_many(self):
        self.cursor.execute("create table t1(c1 varchar(300), c2 varchar(300), c3 varchar(300))")

        v1 = 'ABCDEFGHIJ' * 30
        v2 = '0123456789' * 30
        v3 = '9876543210' * 30

        self.cursor.execute("insert into t1(c1, c2, c3) values (?,?,?)", v1, v2, v3);
        row = self.cursor.execute("select c1, c2, c3, len(c1) as l1, len(c2) as l2, len(c3) as l3 from t1").fetchone()

        self.assertEqual(v1, row.c1)
        self.assertEqual(v2, row.c2)
        self.assertEqual(v3, row.c3)

    def test_varchar_upperlatin(self):
        self._test_strtype('varchar', 'á')

    #
    # unicode
    #

    def test_unicode_null(self):
        self._test_strtype('nvarchar', None, 100)

    # Generate a test for each fencepost size: test_unicode_0, etc.
    def _maketest(value):
        def t(self):
            self._test_strtype('nvarchar', value, len(value))
        return t
    for value in UNICODE_FENCEPOSTS:
        locals()['test_unicode_%s' % len(value)] = _maketest(value)

    def test_unicode_upperlatin(self):
        self._test_strtype('varchar', 'á')

    #
    # binary
    #

    def test_null_binary(self):
        self._test_strtype('varbinary', None, 100)
     
    def test_large_null_binary(self):
        # Bug 1575064
        self._test_strtype('varbinary', None, 4000)

    # Generate a test for each fencepost size: test_unicode_0, etc.
    def _maketest(value):
        def t(self):
            self._test_strtype('varbinary', buffer(value), len(value))
        return t
    for value in ANSI_FENCEPOSTS:
        locals()['test_binary_%s' % len(value)] = _maketest(value)

    #
    # image
    #

    def test_image_null(self):
        self._test_strtype('image', None)

    # Generate a test for each fencepost size: test_unicode_0, etc.
    def _maketest(value):
        def t(self):
            self._test_strtype('image', buffer(value))
        return t
    for value in IMAGE_FENCEPOSTS:
        locals()['test_image_%s' % len(value)] = _maketest(value)

    def test_image_upperlatin(self):
        self._test_strtype('image', buffer('á'))

    #
    # text
    #

    # def test_empty_text(self):
    # self._test_strtype('text', buffer(''))

    def test_null_text(self):
        self._test_strtype('text', None)

    # Generate a test for each fencepost size: test_unicode_0, etc.
    def _maketest(value):
        def t(self):
            self._test_strtype('text', value)
        return t
    for value in ANSI_FENCEPOSTS:
        locals()['test_text_%s' % len(value)] = _maketest(value)

    def test_text_upperlatin(self):
        self._test_strtype('text', 'á')

    #
    # bit
    #

    def test_bit(self):
        value = True
        self.cursor.execute("create table t1(b bit)")
        self.cursor.execute("insert into t1 values (?)", value)
        v = self.cursor.execute("select b from t1").fetchone()[0]
        self.assertEqual(type(v), bool)
        self.assertEqual(v, value)

    def test_bit_string_true(self):
        self.cursor.execute("create table t1(b bit)")
        self.cursor.execute("insert into t1 values (?)", "xyzzy")
        v = self.cursor.execute("select b from t1").fetchone()[0]
        self.assertEqual(type(v), bool)
        self.assertEqual(v, True)

    def test_bit_string_false(self):
        self.cursor.execute("create table t1(b bit)")
        self.cursor.execute("insert into t1 values (?)", "")
        v = self.cursor.execute("select b from t1").fetchone()[0]
        self.assertEqual(type(v), bool)
        self.assertEqual(v, False)
    #
    # decimal
    #

    def test_small_decimal(self):
        # value = Decimal('1234567890987654321')
        value = Decimal('100010') # (I use this because the ODBC docs tell us how the bytes should look in the C struct)
        self.cursor.execute("create table t1(d numeric(19))")
        self.cursor.execute("insert into t1 values(?)", value)
        v = self.cursor.execute("select * from t1").fetchone()[0]
        self.assertEqual(type(v), Decimal)
        self.assertEqual(v, value)


    def test_small_decimal_scale(self):
        # The same as small_decimal, except with a different scale. This value exactly matches the ODBC documentation
        # example in the C Data Types appendix.
        value = '1000.10'
        value = Decimal(value)
        self.cursor.execute("create table t1(d numeric(20,6))")
        self.cursor.execute("insert into t1 values(?)", value)
        v = self.cursor.execute("select * from t1").fetchone()[0]
        self.assertEqual(type(v), Decimal)
        self.assertEqual(v, value)


    def test_negative_decimal_scale(self):
        value = Decimal('-10.0010')
        self.cursor.execute("create table t1(d numeric(19,4))")
        self.cursor.execute("insert into t1 values(?)", value)
        v = self.cursor.execute("select * from t1").fetchone()[0]
        self.assertEqual(type(v), Decimal)
        self.assertEqual(v, value)

    def test_subquery_params(self):
        """Ensure parameter markers work in a subquery"""
        self.cursor.execute("create table t1(id integer, s varchar(20))")
        self.cursor.execute("insert into t1 values (?,?)", 1, 'test')
        row = self.cursor.execute("""
select x.id
from (
select id
from t1
where s = ?
and id between ? and ?
) x
""", 'test', 1, 10).fetchone()
        self.assertNotEqual(row, None)
        self.assertEqual(row[0], 1)

    def _exec(self):
        self.cursor.execute(self.sql)
        
    def test_close_cnxn(self):
        """Make sure using a Cursor after closing its connection doesn't crash."""

        self.cursor.execute("create table t1(id integer, s varchar(20))")
        self.cursor.execute("insert into t1 values (?,?)", 1, 'test')
        self.cursor.execute("select * from t1")

        self.cnxn.close()
        
        # Now that the connection is closed, we expect an exception. (If the code attempts to use
        # the HSTMT, we'll get an access violation instead.)
        self.sql = "select * from t1"
        self.assertRaises(pyodbc.ProgrammingError, self._exec)

    def test_empty_string(self):
        self.cursor.execute("create table t1(s varchar(20))")
        self.cursor.execute("insert into t1 values(?)", "")

    def test_fixed_str(self):
        value = "testing"
        self.cursor.execute("create table t1(s char(7))")
        self.cursor.execute("insert into t1 values(?)", "testing")
        v = self.cursor.execute("select * from t1").fetchone()[0]
        self.assertEqual(type(v), str)
        self.assertEqual(len(v), len(value)) # If we alloc'd wrong, the test below might work because of an embedded NULL
        self.assertEqual(v, value)

    def test_empty_unicode(self):
        self.cursor.execute("create table t1(s nvarchar(20))")
        self.cursor.execute("insert into t1 values(?)", u"")

    def test_unicode_query(self):
        self.cursor.execute(u"select 1")
        
    def test_negative_row_index(self):
        self.cursor.execute("create table t1(s varchar(20))")
        self.cursor.execute("insert into t1 values(?)", "1")
        row = self.cursor.execute("select * from t1").fetchone()
        self.assertEquals(row[0], "1")
        self.assertEquals(row[-1], "1")

    def test_version(self):
        self.assertEquals(3, len(pyodbc.version.split('.'))) # 1.3.1 etc.

    #
    # date, time, datetime
    #

    def test_datetime(self):
        value = datetime(2007, 1, 15, 3, 4, 5)

        self.cursor.execute("create table t1(dt datetime)")
        self.cursor.execute("insert into t1 values (?)", value)

        result = self.cursor.execute("select dt from t1").fetchone()[0]
        self.assertEquals(value, result)

    def test_datetime_fraction(self):
        # SQL Server supports milliseconds, but Python's datetime supports nanoseconds, so the most granular datetime
        # supported is xxx000.

        value = datetime(2007, 1, 15, 3, 4, 5, 123000)
     
        self.cursor.execute("create table t1(dt datetime)")
        self.cursor.execute("insert into t1 values (?)", value)
     
        result = self.cursor.execute("select dt from t1").fetchone()[0]
        self.assertEquals(result, value)

    def test_datetime_fraction_rounded(self):
        # SQL Server supports milliseconds, but Python's datetime supports nanoseconds. pyodbc rounds down to what the
        # database supports.

        full = datetime(2007, 1, 15, 3, 4, 5, 123456)
        rounded = datetime(2007, 1, 15, 3, 4, 5, 123000)
     
        self.cursor.execute("create table t1(dt datetime)")
        self.cursor.execute("insert into t1 values (?)", full)
     
        result = self.cursor.execute("select dt from t1").fetchone()[0]
        self.assertEquals(result, rounded)

    def test_date(self):
        value = date(2001, 1, 1)

        self.cursor.execute("create table t1(dt date)")
        self.cursor.execute("insert into t1 values (?)", value)

        result = self.cursor.execute("select dt from t1").fetchone()[0]
        self.assertEquals(type(result), type(value))
        self.assertEquals(result, value)

    #
    # ints and floats
    #

    def test_int(self):
        value = 1234
        self.cursor.execute("create table t1(n int)")
        self.cursor.execute("insert into t1 values (?)", value)
        result = self.cursor.execute("select n from t1").fetchone()[0]
        self.assertEquals(result, value)

    def test_negative_int(self):
        value = -1
        self.cursor.execute("create table t1(n int)")
        self.cursor.execute("insert into t1 values (?)", value)
        result = self.cursor.execute("select n from t1").fetchone()[0]
        self.assertEquals(result, value)

    def test_bigint(self):
        input = 3000000000
        self.cursor.execute("create table t1(d bigint)")
        self.cursor.execute("insert into t1 values (?)", input)
        result = self.cursor.execute("select d from t1").fetchone()[0]
        self.assertEqual(result, input)

    def test_float(self):
        value = 1234.567
        self.cursor.execute("create table t1(n float)")
        self.cursor.execute("insert into t1 values (?)", value)
        result = self.cursor.execute("select n from t1").fetchone()[0]
        self.assertEquals(result, value)

    def test_negative_float(self):
        value = -200
        self.cursor.execute("create table t1(n float)")
        self.cursor.execute("insert into t1 values (?)", value)
        result = self.cursor.execute("select n from t1").fetchone()[0]
        self.assertEqual(value, result)


    def test_date(self):
        ver = self.get_sqlserver_version()
        if ver < 10: # 2008 only
            return # so pass / ignore

        value = date.today()
     
        self.cursor.execute("create table t1(d date)")
        self.cursor.execute("insert into t1 values (?)", value)
     
        result = self.cursor.execute("select d from t1").fetchone()[0]
        self.assertEquals(value, result)


    def test_time(self):
        ver = self.get_sqlserver_version()
        if ver < 10: # 2008 only
            return # so pass / ignore

        value = datetime.now().time()
        
        # We aren't yet writing values using the new extended time type so the value written to the database is only
        # down to the second.
        value = value.replace(microsecond=0)
         
        self.cursor.execute("create table t1(t time)")
        self.cursor.execute("insert into t1 values (?)", value)
         
        result = self.cursor.execute("select t from t1").fetchone()[0]
        self.assertEquals(value, result)

    #
    # stored procedures
    #

    # def test_callproc(self):
    # "callproc with a simple input-only stored procedure"
    # pass

    def test_sp_results(self):
        self.cursor.execute(
            """
Create procedure proc1
AS
select top 10 name, id, xtype, refdate
from sysobjects
""")
        rows = self.cursor.execute("exec proc1").fetchall()
        self.assertEquals(type(rows), list)
        self.assertEquals(len(rows), 10) # there has to be at least 10 items in sysobjects
        self.assertEquals(type(rows[0].refdate), datetime)


    def test_sp_results_from_temp(self):

        # Note: I've used "set nocount on" so that we don't get the number of rows deleted from #tmptable.
        # If you don't do this, you'd need to call nextset() once to skip it.

        self.cursor.execute(
            """
Create procedure proc1
AS
set nocount on
select top 10 name, id, xtype, refdate
into #tmptable
from sysobjects

select * from #tmptable
""")
        self.cursor.execute("exec proc1")
        self.assert_(self.cursor.description is not None)
        self.assert_(len(self.cursor.description) == 4)

        rows = self.cursor.fetchall()
        self.assertEquals(type(rows), list)
        self.assertEquals(len(rows), 10) # there has to be at least 10 items in sysobjects
        self.assertEquals(type(rows[0].refdate), datetime)


    def test_sp_results_from_vartbl(self):
        self.cursor.execute(
            """
Create procedure proc1
AS
set nocount on
declare @tmptbl table(name varchar(100), id int, xtype varchar(4), refdate datetime)

insert into @tmptbl
select top 10 name, id, xtype, refdate
from sysobjects

select * from @tmptbl
""")
        self.cursor.execute("exec proc1")
        rows = self.cursor.fetchall()
        self.assertEquals(type(rows), list)
        self.assertEquals(len(rows), 10) # there has to be at least 10 items in sysobjects
        self.assertEquals(type(rows[0].refdate), datetime)

    def test_sp_with_dates(self):
        # Reported in the forums that passing two datetimes to a stored procedure doesn't work.
        self.cursor.execute(
            """
if exists (select * from dbo.sysobjects where id = object_id(N'[test_sp]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[test_sp]
""")
        self.cursor.execute(
            """
create procedure test_sp(@d1 datetime, @d2 datetime)
AS
declare @d as int
set @d = datediff(year, @d1, @d2)
select @d
""")
        self.cursor.execute("exec test_sp ?, ?", datetime.now(), datetime.now())
        rows = self.cursor.fetchall()
        self.assert_(rows is not None)
        self.assert_(rows[0][0] == 0) # 0 years apart

    #
    # misc
    #

    def test_rowcount_delete(self):
        self.assertEquals(self.cursor.rowcount, -1)
        self.cursor.execute("create table t1(i int)")
        count = 4
        for i in range(count):
            self.cursor.execute("insert into t1 values (?)", i)
        self.cursor.execute("delete from t1")
        self.assertEquals(self.cursor.rowcount, count)

    def test_rowcount_nodata(self):
        """
This represents a different code path than a delete that deleted something.

The return value is SQL_NO_DATA and code after it was causing an error. We could use SQL_NO_DATA to step over
the code that errors out and drop down to the same SQLRowCount code. On the other hand, we could hardcode a
zero return value.
"""
        self.cursor.execute("create table t1(i int)")
        # This is a different code path internally.
        self.cursor.execute("delete from t1")
        self.assertEquals(self.cursor.rowcount, 0)

    def test_rowcount_select(self):
        """
Ensure Cursor.rowcount is set properly after a select statement.

pyodbc calls SQLRowCount after each execute and sets Cursor.rowcount, but SQL Server 2005 returns -1 after a
select statement, so we'll test for that behavior. This is valid behavior according to the DB API
specification, but people don't seem to like it.
"""
        self.cursor.execute("create table t1(i int)")
        count = 4
        for i in range(count):
            self.cursor.execute("insert into t1 values (?)", i)
        self.cursor.execute("select * from t1")
        self.assertEquals(self.cursor.rowcount, -1)

        rows = self.cursor.fetchall()
        self.assertEquals(len(rows), count)
        self.assertEquals(self.cursor.rowcount, -1)

    def test_rowcount_reset(self):
        "Ensure rowcount is reset to -1"

        self.cursor.execute("create table t1(i int)")
        count = 4
        for i in range(count):
            self.cursor.execute("insert into t1 values (?)", i)
        self.assertEquals(self.cursor.rowcount, 1)

        self.cursor.execute("create table t2(i int)")
        self.assertEquals(self.cursor.rowcount, -1)

    def test_lower_case(self):
        "Ensure pyodbc.lowercase forces returned column names to lowercase."

        # Has to be set before creating the cursor, so we must recreate self.cursor.

        pyodbc.lowercase = True
        self.cursor = self.cnxn.cursor()

        self.cursor.execute("create table t1(Abc int, dEf int)")
        self.cursor.execute("select * from t1")

        names = [ t[0] for t in self.cursor.description ]
        names.sort()

        self.assertEquals(names, [ "abc", "def" ])

        # Put it back so other tests don't fail.
        pyodbc.lowercase = False
        
    def test_row_description(self):
        """
Ensure Cursor.description is accessible as Row.cursor_description.
"""
        self.cursor = self.cnxn.cursor()
        self.cursor.execute("create table t1(a int, b char(3))")
        self.cnxn.commit()
        self.cursor.execute("insert into t1 values(1, 'abc')")

        row = self.cursor.execute("select * from t1").fetchone()
        self.assertEquals(self.cursor.description, row.cursor_description)
        

    def test_temp_select(self):
        # A project was failing to create temporary tables via select into.
        self.cursor.execute("create table t1(s char(7))")
        self.cursor.execute("insert into t1 values(?)", "testing")
        v = self.cursor.execute("select * from t1").fetchone()[0]
        self.assertEqual(type(v), str)
        self.assertEqual(v, "testing")

        self.cursor.execute("select s into t2 from t1")
        v = self.cursor.execute("select * from t1").fetchone()[0]
        self.assertEqual(type(v), str)
        self.assertEqual(v, "testing")


    def test_money(self):
        d = Decimal('123456.78')
        self.cursor.execute("create table t1(i int identity(1,1), m money)")
        self.cursor.execute("insert into t1(m) values (?)", d)
        v = self.cursor.execute("select m from t1").fetchone()[0]
        self.assertEqual(v, d)


    def test_executemany(self):
        self.cursor.execute("create table t1(a int, b varchar(10))")

        params = [ (i, str(i)) for i in range(1, 6) ]

        self.cursor.executemany("insert into t1(a, b) values (?,?)", params)

        count = self.cursor.execute("select count(*) from t1").fetchone()[0]
        self.assertEqual(count, len(params))

        self.cursor.execute("select a, b from t1 order by a")
        rows = self.cursor.fetchall()
        self.assertEqual(count, len(rows))

        for param, row in zip(params, rows):
            self.assertEqual(param[0], row[0])
            self.assertEqual(param[1], row[1])


    def test_executemany_one(self):
        "Pass executemany a single sequence"
        self.cursor.execute("create table t1(a int, b varchar(10))")

        params = [ (1, "test") ]

        self.cursor.executemany("insert into t1(a, b) values (?,?)", params)

        count = self.cursor.execute("select count(*) from t1").fetchone()[0]
        self.assertEqual(count, len(params))

        self.cursor.execute("select a, b from t1 order by a")
        rows = self.cursor.fetchall()
        self.assertEqual(count, len(rows))

        for param, row in zip(params, rows):
            self.assertEqual(param[0], row[0])
            self.assertEqual(param[1], row[1])
        

    def test_executemany_failure(self):
        """
Ensure that an exception is raised if one query in an executemany fails.
"""
        self.cursor.execute("create table t1(a int, b varchar(10))")

        params = [ (1, 'good'),
                   ('error', 'not an int'),
                   (3, 'good') ]
        
        self.failUnlessRaises(pyodbc.Error, self.cursor.executemany, "insert into t1(a, b) value (?, ?)", params)

        
    def test_row_slicing(self):
        self.cursor.execute("create table t1(a int, b int, c int, d int)");
        self.cursor.execute("insert into t1 values(1,2,3,4)")

        row = self.cursor.execute("select * from t1").fetchone()

        result = row[:]
        self.failUnless(result is row)

        result = row[:-1]
        self.assertEqual(result, (1,2,3))

        result = row[0:4]
        self.failUnless(result is row)


    def test_row_repr(self):
        self.cursor.execute("create table t1(a int, b int, c int, d int)");
        self.cursor.execute("insert into t1 values(1,2,3,4)")

        row = self.cursor.execute("select * from t1").fetchone()

        result = str(row)
        self.assertEqual(result, "(1, 2, 3, 4)")

        result = str(row[:-1])
        self.assertEqual(result, "(1, 2, 3)")

        result = str(row[:1])
        self.assertEqual(result, "(1,)")


    def test_concatenation(self):
        v2 = '0123456789' * 30
        v3 = '9876543210' * 30

        self.cursor.execute("create table t1(c1 int identity(1, 1), c2 varchar(300), c3 varchar(300))")
        self.cursor.execute("insert into t1(c2, c3) values (?,?)", v2, v3)

        row = self.cursor.execute("select c2, c3, c2 + c3 as both from t1").fetchone()

        self.assertEqual(row.both, v2 + v3)

    def test_view_select(self):
        # Reported in forum: Can't select from a view? I think I do this a lot, but another test never hurts.

        # Create a table (t1) with 3 rows and a view (t2) into it.
        self.cursor.execute("create table t1(c1 int identity(1, 1), c2 varchar(50))")
        for i in range(3):
            self.cursor.execute("insert into t1(c2) values (?)", "string%s" % i)
        self.cursor.execute("create view t2 as select * from t1")

        # Select from the view
        self.cursor.execute("select * from t2")
        rows = self.cursor.fetchall()
        self.assert_(rows is not None)
        self.assert_(len(rows) == 3)
        

    def test_autocommit(self):
        self.assertEqual(self.cnxn.autocommit, False)

        othercnxn = pyodbc.connect(self.connection_string, autocommit=True)
        self.assertEqual(othercnxn.autocommit, True)

        othercnxn.autocommit = False
        self.assertEqual(othercnxn.autocommit, False)

    def test_sqlserver_callproc(self):
        try:
            self.cursor.execute("drop procedure pyodbctest")
            self.cnxn.commit()
        except:
            pass

        self.cursor.execute("create table t1(s varchar(10))")
        self.cursor.execute("insert into t1 values(?)", "testing")

        self.cursor.execute("""
create procedure pyodbctest @var1 varchar(32)
as
begin
select s
from t1
return
end
""")
        self.cnxn.commit()

        # for row in self.cursor.procedureColumns('pyodbctest'):
        # print row.procedure_name, row.column_name, row.column_type, row.type_name

        self.cursor.execute("exec pyodbctest 'hi'")

        # print self.cursor.description
        # for row in self.cursor:
        # print row.s


def main():
    from optparse import OptionParser
    parser = OptionParser(usage=usage)
    parser.add_option("-v", "--verbose", action="count", help="Increment test verbosity (can be used multiple times)")
    parser.add_option("-d", "--debug", action="store_true", default=False, help="Print debugging items")
    parser.add_option("-t", "--test", help="Run only the named test")

    (options, args) = parser.parse_args()

    if len(args) > 1:
        parser.error('Only one argument is allowed. Do you need quotes around the connection string?')

    if not args:
        connection_string = load_setup_connection_string('sqlservertests')

        if not connection_string:
            parser.print_help()
            raise SystemExit()
    else:
        connection_string = args[0]

    cnxn = pyodbc.connect(connection_string)
    print_library_info(cnxn)
    cnxn.close()

    suite = load_tests(SqlServerTestCase, options.test, connection_string)

    testRunner = unittest.TextTestRunner(verbosity=options.verbose)
    result = testRunner.run(suite)


if __name__ == '__main__':

    # Add the build directory to the path so we're testing the latest build, not the installed version.

    add_to_path()

    import pyodbc
    main()
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