✨ Feature: 允许插件从环境变量中读取配置项并支持 alias (#3673)

Co-authored-by: Ju4tCode <42488585+yanyongyu@users.noreply.github.com>

tests/test_plugin/test_get.py

@@ -1,4 +1,5 @@
-from pydantic import BaseModel
+from pydantic import BaseModel, Field
+import pytest
 
 import nonebot
 from nonebot.plugin import PluginManager, _managers
@@ -67,3 +68,27 @@ def test_get_plugin_config():
     config = nonebot.get_plugin_config(Config)
     assert isinstance(config, Config)
     assert config.plugin_config == 1
+
+
+def test_get_plugin_config_with_env(monkeypatch: pytest.MonkeyPatch):
+    monkeypatch.setenv("PLUGIN_CONFIG_ONE", "no_dummy_val")
+    monkeypatch.setenv("PLUGIN_SUB_CONFIG__TWO", "two")
+    monkeypatch.setenv("PLUGIN_CFG_THREE", "33")
+    monkeypatch.setenv("CONFIG_FROM_INIT", "impossible")
+
+    class SubConfig(BaseModel):
+        two: str = "dummy_val"
+
+    class Config(BaseModel):
+        plugin_config: int
+        plugin_config_one: str = "dummy_val"
+        plugin_sub_config: SubConfig = Field(default_factory=SubConfig)
+        plugin_config_three: int = Field(default=3, alias="plugin_cfg_three")
+        config_from_init: str = "dummy_val"
+
+    config = nonebot.get_plugin_config(Config)
+    assert config.plugin_config == 1
+    assert config.plugin_config_one == "no_dummy_val"
+    assert config.plugin_sub_config.two == "two"
+    assert config.plugin_config_three == 33
+    assert config.config_from_init == "init"