feat: support customisation for supported_targets and preview_targets by contextvar

Author: horw

docs/usages/markers.rst

@@ -81,6 +81,21 @@ Target Extension
 
 In scenarios where the supported targets are [esp32, esp32c3, esp32s3], ``idf_parametrize`` simplifies the process of creating parameterized tests by automatically expanding the target list.
 
+By default, the values for ``SUPPORTED_TARGETS`` and ``PREVIEW_TARGETS`` are imported from:
+
+.. code:: python
+
+   from esp_bool_parser import PREVIEW_TARGETS, SUPPORTED_TARGETS
+
+However, you can propagate custom values by using the following:
+
+.. code:: python
+
+   from pytest_embedded_idf.utils import supported_targets, preview_targets
+
+   supported_targets.set(CUSTOM_SUPPORT_TARGETS)
+   preview_targets.set(CUSTOM_SUPPORT_TARGETS)
+
 **Example:**
 
 .. code:: python

pytest-embedded-idf/pytest_embedded_idf/utils.py

@@ -1,8 +1,12 @@
 import typing as t
+from contextvars import ContextVar
 
 import pytest
 from esp_bool_parser import PREVIEW_TARGETS, SUPPORTED_TARGETS
 
+supported_targets = ContextVar('supported_targets', default=SUPPORTED_TARGETS)
+preview_targets = ContextVar('preview_targets', default=PREVIEW_TARGETS)
+
 
 def _expand_target_values(values: t.List[t.List[t.Any]], target_index: int) -> t.List[t.List[t.Any]]:
     """
@@ -13,11 +17,11 @@ def _expand_target_values(values: t.List[t.List[t.Any]], target_index: int) -> t
         target = value[target_index]
         if target == 'supported_targets':
             expanded_values.extend([
-                value[:target_index] + [target] + value[target_index + 1 :] for target in SUPPORTED_TARGETS
+                value[:target_index] + [target] + value[target_index + 1 :] for target in supported_targets.get()
             ])
         elif target == 'preview_targets':
             expanded_values.extend([
-                value[:target_index] + [target] + value[target_index + 1 :] for target in PREVIEW_TARGETS
+                value[:target_index] + [target] + value[target_index + 1 :] for target in preview_targets.get()
             ])
         else:
             expanded_values.append(value)