More tests

tests/parser/test_schema.py

@@ -56,3 +56,52 @@ class TestBaseDocument:
     def test_extra_info_str_none(self):
         doc = ConcreteDoc(text="x")
         assert doc.extra_info_str is None
+
+
+# =====================================================================
+# Coverage gap tests for application/parser/schema/base.py  (lines 19, 27, 34)
+# =====================================================================
+
+
+@pytest.mark.unit
+class TestDocumentBase:
+
+    def test_document_post_init_raises_on_none_text(self):
+        """Cover line 19: Document.__post_init__ raises ValueError for None text."""
+        from application.parser.schema.base import Document
+
+        with pytest.raises(ValueError, match="text field not set"):
+            Document(text=None)
+
+    def test_document_to_langchain_format(self):
+        """Cover line 27: Document.to_langchain_format converts correctly."""
+        from application.parser.schema.base import Document
+
+        doc = Document(text="hello world", extra_info={"source": "test"})
+        lc_doc = doc.to_langchain_format()
+        assert lc_doc.page_content == "hello world"
+        assert lc_doc.metadata == {"source": "test"}
+
+    def test_document_to_langchain_format_no_extra_info(self):
+        """Cover: to_langchain_format with no extra_info uses empty dict."""
+        from application.parser.schema.base import Document
+
+        doc = Document(text="hello")
+        lc_doc = doc.to_langchain_format()
+        assert lc_doc.metadata == {}
+
+    def test_document_from_langchain_format(self):
+        """Cover line 34: Document.from_langchain_format creates Document."""
+        from application.parser.schema.base import Document
+        from langchain_core.documents import Document as LCDocument
+
+        lc_doc = LCDocument(page_content="test content", metadata={"key": "val"})
+        doc = Document.from_langchain_format(lc_doc)
+        assert doc.text == "test content"
+        assert doc.extra_info == {"key": "val"}
+
+    def test_document_get_type(self):
+        """Cover line 24: Document.get_type returns 'Document'."""
+        from application.parser.schema.base import Document
+
+        assert Document.get_type() == "Document"