Improve error message when key is not found in gradle.properties (fix #3)

Author: object-Object

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "hatch-gradle-version"
-version = "0.9.10"
+version = "0.9.11"
 authors = [
     { name="object-Object", email="object@objectobject.ca" },
 ]

src/hatch_gradle_version/common/gradle.py

@@ -43,6 +43,8 @@ def from_properties(
         key: str,
         fmt: Callable[[str, dict[str, str]], str] | None,
     ):
+        if key not in p:
+            raise KeyError(f"Key not found in gradle.properties: {key}")
         return cls.from_raw(
             raw_version=str(p[key].data),
             extra_versions={key: value.data for key, value in p.items()},

src/hatch_gradle_version/common/test_gradle.py

@@ -0,0 +1,29 @@
+# pyright: reportMissingTypeStubs=none
+
+import jproperties
+import pytest
+
+from hatch_gradle_version.common.gradle import GradleVersion
+
+
+def test_from_properties_valid():
+    p = jproperties.Properties()
+    p["key"] = "0.11.1-7"
+
+    gradle_version = GradleVersion.from_properties(p, "key", None)
+
+    assert gradle_version == GradleVersion(
+        raw_version="0.11.1-7",
+        version="0.11.1",
+        rc=7,
+        build=None,
+        extra_versions={"key": "0.11.1-7"},
+    )
+
+
+def test_from_properties_missing_key():
+    p = jproperties.Properties()
+    p["key"] = "0.11.1-7"
+
+    with pytest.raises(KeyError, match="MISSING_KEY"):
+        GradleVersion.from_properties(p, "MISSING_KEY", None)