Add an error() method to Configuration

Author: dlax

pgactivity/config.py

@@ -356,3 +356,6 @@ def lookup(
             return cls.parse(builtin_profile.content, builtin_profile.name)
 
         raise FileNotFoundError(f"profile {profile!r} not found")
+
+    def error(self, message: str) -> ConfigurationError:
+        return ConfigurationError(self.name, message)

tests/test_config.py

@@ -6,7 +6,7 @@
 import attr
 import pytest
 
-from pgactivity.config import Configuration, Flag, UISection
+from pgactivity.config import Configuration, ConfigurationError, Flag, UISection
 
 
 def test_flag():
@@ -85,6 +85,13 @@ def asdict(cfg: Configuration) -> dict[str, Any]:
     return {k: attr.asdict(v) for k, v in cfg.items()}
 
 
+def test_error() -> None:
+    cfg = Configuration(name="test", values={})
+    with pytest.raises(ConfigurationError, match="test error") as cm:
+        raise cfg.error("test error")
+    assert cm.value.filename == "test"
+
+
 def test_lookup(tmp_path: Path) -> None:
     cfg = Configuration.lookup(None, user_config_home=tmp_path)
     assert cfg is None