test: moving more tests into test cases pattern (#234)

* tests: move keep shutter tests

* feat: add TypedDicts for kwargs in Channel, SLMImage, and MDAEvent classes

* test: add reset event timer test cases and clean up unused code

Author: tlambert03

src/useq/_mda_event.py

@@ -7,6 +7,7 @@
     Any,
     NamedTuple,
     Optional,
+    TypedDict,
 )
 
 import numpy as np
@@ -51,6 +52,14 @@ def __eq__(self, _value: object) -> bool:
             return self.config == _value
         return super().__eq__(_value)
 
+    if TYPE_CHECKING:
+
+        class Kwargs(TypedDict, total=False):
+            """Type for the kwargs passed to the channel."""
+
+            config: str
+            group: str
+
 
 class SLMImage(UseqModel):
     """SLM Image in a MDA event.
@@ -97,6 +106,15 @@ def __eq__(self, other: object) -> bool:
             and np.array_equal(self.data, other.data)
         )
 
+    if TYPE_CHECKING:
+
+        class Kwargs(TypedDict, total=False):
+            """Type for the kwargs passed to the SLM image."""
+
+            data: npt.ArrayLike
+            device: Optional[str]
+            exposure: Optional[float]
+
 
 class PropertyTuple(NamedTuple):
     """Three-tuple capturing a device, property, and value.
@@ -244,3 +262,24 @@ def _validate_channel(cls, val: Any) -> Any:
         _sx = field_serializer("x_pos", mode="plain")(_float_or_none)
         _sy = field_serializer("y_pos", mode="plain")(_float_or_none)
         _sz = field_serializer("z_pos", mode="plain")(_float_or_none)
+
+    if TYPE_CHECKING:
+
+        class Kwargs(TypedDict, total=False):
+            """Type for the kwargs passed to the MDA event."""
+
+            index: dict[str, int]
+            channel: Channel | Channel.Kwargs
+            exposure: float
+            min_start_time: float
+            pos_name: str
+            x_pos: float
+            y_pos: float
+            z_pos: float
+            slm_image: SLMImage | SLMImage.Kwargs | npt.ArrayLike
+            sequence: MDASequence | dict
+            properties: list[tuple[str, str, Any]]
+            metadata: dict
+            action: AnyAction
+            keep_shutter_open: bool
+            reset_event_timer: bool