def test_inline_citation_replacement(self, mock_citation_results):
        """Test replacing citation placeholders with actual citations."""
        # First format the context with citation placeholders
        def format_context_with_citations(search_results):
            context_items = []
            for i, result in enumerate(search_results["chunk_search_results"]):
                citation_id = result.get("metadata", {}).get("citation_id")
                text = result["text"]

                if citation_id:
                    context_items.append(f"{text} [{citation_id}]")
                else:
                    context_items.append(text)

            return "\n\n".join(context_items)

        # Function to replace citation placeholders in LLM response
        def replace_citation_placeholders(response_text, citation_metadata):
            # Simple regex-based replacement
            import re

            def citation_replacement(match):
                citation_id = match.group(1)
                if citation_id in citation_metadata:
                    citation = citation_metadata[citation_id]
                    authors = citation.get("authors", ["Unknown author"])
                    year = citation.get("year", "n.d.")
                    return f"({authors[0]} et al., {year})"
                return match.group(0)  # Keep original if not found

            # Replace [citeX] format
            pattern = r'\[(cite\d+)\]'
            return re.sub(pattern, citation_replacement, response_text)

        # Create mock citation metadata
        citation_metadata = {
            f"cite{i}": {
                "authors": [f"Author {chr(65+i)}"] + (["et al."] if i % 2 == 0 else []),
                "year": 2020 + i,
                "title": f"Document {i//2}"
            }
            for i in range(5)
        }

        # Response with citation placeholders
        response_with_placeholders = (
            "Aristotle's ethics [cite0] focuses on virtue ethics. "
            "This contrasts with utilitarianism [cite2] which focuses on outcomes. "
            "Later philosophers [cite4] expanded on these ideas."
        )

        # Replace placeholders
        final_response = replace_citation_placeholders(response_with_placeholders, citation_metadata)

        # Check formatting
        assert "(Author A et al., 2020)" in final_response, "Author A citation should be in the response"
        assert "(Author C" in final_response, "Author C citation should be in the response"
        assert "(Author E" in final_response, "Author E citation should be in the response"
        assert "[cite0]" not in final_response, "Citation placeholder [cite0] should be replaced"
        assert "[cite2]" not in final_response, "Citation placeholder [cite2] should be replaced"
        assert "[cite4]" not in final_response, "Citation placeholder [cite4] should be replaced"
Test replacing citation placeholders with actual citations.
py/tests/unit/retrieval/test_rag_processing.py