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#!/usr/bin/python
# Tests for reading from Excel files.
#
# I have not been able to successfully create or modify Excel files.
import sys, os, re
import unittest
from os.path import abspath
from testutils import *
CNXNSTRING = None
class ExcelTestCase(unittest.TestCase):
def __init__(self, method_name):
unittest.TestCase.__init__(self, method_name)
def setUp(self):
self.cnxn = pyodbc.connect(CNXNSTRING, autocommit=True)
self.cursor = self.cnxn.cursor()
for i in range(3):
try:
self.cursor.execute("drop table t%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_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_read_sheet(self):
# The first method of reading data is to access worksheets by name in this format [name$].
#
# Our second sheet is named Sheet2 and has two columns. The first has values 10, 20, 30, etc.
rows = self.cursor.execute("select * from [Sheet2$]").fetchall()
self.assertEquals(len(rows), 5)
for index, row in enumerate(rows):
self.assertEquals(row.s2num, float(index + 1) * 10)
def test_read_range(self):
# The second method of reading data is to assign a name to a range of cells and access that as a table.
#
# Our first worksheet has a section named Table1. The first column has values 1, 2, 3, etc.
rows = self.cursor.execute("select * from Table1").fetchall()
self.assertEquals(len(rows), 10)
for index, row in enumerate(rows):
self.assertEquals(row.num, float(index + 1))
self.assertEquals(row.val, chr(ord('a') + index))
def test_tables(self):
# This is useful for figuring out what is available
tables = [ row.table_name for row in self.cursor.tables() ]
assert 'Sheet2$' in tables, 'tables: %s' % ' '.join(tables)
# def test_append(self):
# rows = self.cursor.execute("select s2num, s2val from [Sheet2$]").fetchall()
#
# print rows
#
# nextnum = max([ row.s2num for row in rows ]) + 10
#
# self.cursor.execute("insert into [Sheet2$](s2num, s2val) values (?, 'z')", nextnum)
#
# row = self.cursor.execute("select s2num, s2val from [Sheet2$] where s2num=?", nextnum).fetchone()
# self.assertTrue(row)
#
# print 'added:', nextnum, len(rows), 'rows'
#
# self.assertEquals(row.s2num, nextnum)
# self.assertEquals(row.s2val, 'z')
#
# self.cnxn.commit()
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 args:
parser.error('no arguments expected')
global CNXNSTRING
path = dirname(abspath(__file__))
filename = join(path, 'test.xls')
assert os.path.exists(filename)
CNXNSTRING = 'Driver={Microsoft Excel Driver (*.xls)};DBQ=%s;READONLY=FALSE' % filename
cnxn = pyodbc.connect(CNXNSTRING, autocommit=True)
print_library_info(cnxn)
cnxn.close()
suite = load_tests(ExcelTestCase, options.test)
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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