Test connection handling, multiple clients, instrument access across
all three virtual instruments, physics engine integration, and error
handling. Update pytest-asyncio config for v1.x compatibility.
Comprehensive test coverage for MultimeterSim including MEAS:VOLT:DC,
MEAS:CURR:DC, CONF, and READ commands. Tests both standalone operation
and physics engine integration including temperature-dependent measurements.
Comprehensive test coverage for PowerSupplySim including VOLT, CURR,
OUTP, and MEAS commands. Tests both standalone operation and physics
engine integration.
Comprehensive test suite for SCPI command parsing:
- SCPICommand dataclass tests (creation, keyword property)
- Parser tests for queries, commands, arguments
- IEEE 488.2 common command tests (*IDN?, *RST, etc.)
- Edge cases (whitespace, empty strings)
- Instrument-specific command tests
Also fixed bug where is_query was determined from command string
ending rather than header ending (handles queries with arguments).
