feat: add PageIndex SDK with local/cloud dual-mode support (#207)

tests/test_pdf_parser.py

@@ -0,0 +1,29 @@
+import pytest
+from pathlib import Path
+from pageindex.parser.pdf import PdfParser
+from pageindex.parser.protocol import ContentNode, ParsedDocument
+
+TEST_PDF = Path("tests/pdfs/deepseek-r1.pdf")
+
+def test_supported_extensions():
+    parser = PdfParser()
+    assert ".pdf" in parser.supported_extensions()
+
+@pytest.mark.skipif(not TEST_PDF.exists(), reason="Test PDF not available")
+def test_parse_returns_parsed_document():
+    parser = PdfParser()
+    result = parser.parse(str(TEST_PDF))
+    assert isinstance(result, ParsedDocument)
+    assert len(result.nodes) > 0
+    assert result.doc_name != ""
+
+@pytest.mark.skipif(not TEST_PDF.exists(), reason="Test PDF not available")
+def test_parse_nodes_are_flat_without_level():
+    parser = PdfParser()
+    result = parser.parse(str(TEST_PDF))
+    for node in result.nodes:
+        assert isinstance(node, ContentNode)
+        assert node.content is not None
+        assert node.tokens >= 0
+        assert node.index is not None
+        assert node.level is None