tests: Add mock_pins and hardware_init support to test framework.

Author: nedseb

tests/runner/mpremote_bridge.py

@@ -67,12 +67,15 @@ def _driver_dir(self, driver_name):
     def call_method(
         self, driver_name, driver_class, i2c_config, method,
         args=None, i2c_address=None, module_name=None,
+        hardware_init=None,
     ):
         """Call a method on a driver instance and return the result."""
         mod = module_name or driver_name
         args_str = ", ".join(repr(a) for a in (args or []))
         i2c_init = _i2c_init_code(i2c_config)
-        if i2c_address is not None:
+        if hardware_init is not None:
+            dev_init = hardware_init + "\n"
+        elif i2c_address is not None:
             dev_init = f"dev = {driver_class}(i2c, address={i2c_address!r})\n"
         else:
             dev_init = f"dev = {driver_class}(i2c)\n"

tests/test_scenarios.py

@@ -6,6 +6,7 @@
 import pytest
 
 from tests.fake_machine.i2c import FakeI2C
+from tests.fake_machine.pin import FakePin
 from tests.runner.executor import (
     check_result,
     cleanup_driver,
@@ -59,8 +60,13 @@ def make_mock_instance(scenario):
     fake_i2c = FakeI2C(registers=registers, address=address)
     driver_module, _ = load_driver_mock(driver_name, fake_i2c, module_name=module_name)
 
+    # Build extra constructor kwargs from mock_pins
+    extra_kwargs = {}
+    for pin_name, pin_id in scenario.get("mock_pins", {}).items():
+        extra_kwargs[pin_name] = FakePin(pin_id)
+
     cls = getattr(driver_module, driver_class)
-    instance = cls(fake_i2c, address=address)
+    instance = cls(fake_i2c, address=address, **extra_kwargs)
     return instance, driver_name
 
 
@@ -92,6 +98,7 @@ def test_scenario(scenario, test, mode, port):
                     display["method"],
                     display.get("args"),
                     module_name=scenario.get("module_name"),
+                    hardware_init=scenario.get("hardware_init"),
                 )
                 label = display.get("label", display["method"])
                 unit = display.get("unit", "")
@@ -110,6 +117,7 @@ def test_scenario(scenario, test, mode, port):
                 test["method"],
                 test.get("args"),
                 module_name=scenario.get("module_name"),
+                hardware_init=scenario.get("hardware_init"),
             )
         elif action == "read_register":
             result = bridge.read_register(