Extended search functionality

tests/test_search.py

@@ -12,6 +12,7 @@ import pytest
 from hxbooks.search import (
     ComparisonOperator,
     Field,
+    IsOperatorValue,
     QueryParser,
     SearchQuery,
     _convert_value,  # noqa: PLC2701
@@ -87,6 +88,14 @@ class TestFieldFilters:
         assert filter.field == Field.AUTHOR
         assert filter.value == "tolkien"
 
+    def test_parse_is_filter(self, parser: QueryParser) -> None:
+        """Test parsing 'is' operator field filter."""
+        result = parser.parse("is:reading")
+        assert len(result.field_filters) == 1
+        filter = result.field_filters[0]
+        assert filter.field == Field.IS
+        assert filter.value == IsOperatorValue.READING
+
     def test_parse_negated_filter(self, parser: QueryParser) -> None:
         """Test parsing negated field filter."""
         result = parser.parse("-genre:romance")
@@ -243,6 +252,21 @@ class TestTypeConversion:
         assert result == "123"
         assert isinstance(result, str)
 
+    def test_convert_is_operator(self, parser: QueryParser) -> None:
+        """Test converting values for 'is' operator fields."""
+        result = _convert_value(Field.IS, "reading")
+        assert result == IsOperatorValue.READING
+
+        result = _convert_value(Field.IS, "dropped")
+        assert result == IsOperatorValue.DROPPED
+
+        result = _convert_value(Field.IS, "wished")
+        assert result == IsOperatorValue.WISHED
+
+        # Invalid value should return UNKNOWN
+        result = _convert_value(Field.IS, "invalid-status")
+        assert result == IsOperatorValue.UNKNOWN
+
 
 class TestParsingEdgeCases:
     """Test edge cases and error handling in query parsing."""