Environment

• Python: 3.10
• pyodbc: 4.0.32
• OS: macOS 11.6.2
• DB: SQL Server Microsoft SQL Server 2019 (RTM-CU14) (KB5007182) - 15.0.4188.2 (X64) Developer Edition (64-bit) on Linux (Ubuntu 20.04.3 LTS)
• driver: freetds stable 1.3.6

Issue

The test_drivers() method in tests3/sqlservertests.py assumes that the regular expression DRIVER={?([^}]+?)}?; will always find a match in the output of pyodbc.drivers(). That assumption causes the test to fail when (for example) the output of pyodbc.drivers() is ['FreeTDS', 'PostgreSQL', 'SQLite'].

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ERROR: test_drivers (__main__.SqlServerTestCase)
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Traceback (most recent call last):
  File "/Users/bkline/repos/pyodbc/tests3/sqlservertests.py", line 1659, in test_drivers
    current = m.group(1)
AttributeError: 'NoneType' object has no attribute 'group'