implement single-function patches (#69)

tests/ahriman/models/test_pkgbuild_patch.py

@@ -5,6 +5,15 @@ from unittest.mock import MagicMock, call
 from ahriman.models.pkgbuild_patch import PkgbuildPatch
 
 
+def test_post_init() -> None:
+    """
+    must remove empty keys
+    """
+    assert PkgbuildPatch("", "value").key is None
+    assert PkgbuildPatch(None, "value").key is None
+    assert PkgbuildPatch("key", "value").key == "key"
+
+
 def test_is_function() -> None:
     """
     must correctly define key as function
@@ -13,6 +22,14 @@ def test_is_function() -> None:
     assert PkgbuildPatch("key()", "value").is_function
 
 
+def test_is_plain_diff() -> None:
+    """
+    must correctly define key as function
+    """
+    assert not PkgbuildPatch("key", "value").is_plain_diff
+    assert PkgbuildPatch(None, "value").is_plain_diff
+
+
 def test_quote() -> None:
     """
     must quote strings if unsafe flag is not set
@@ -32,6 +49,13 @@ def test_serialize() -> None:
     assert PkgbuildPatch("key", "4'2", unsafe=True).serialize() == "key=4'2"
 
 
+def test_serialize_plain_diff() -> None:
+    """
+    must correctly serialize function values
+    """
+    assert PkgbuildPatch(None, "{ value }").serialize() == "{ value }"
+
+
 def test_serialize_function() -> None:
     """
     must correctly serialize function values