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This fixes JSONDecodeError when Claude generates very long responses. The default subprocess pipe buffer was too small for large single-line JSON messages, causing truncation at around 64KB. Increased buffer size to 10MB which should handle most real-world cases. Fixes #32
40 lines
No EOL
1.7 KiB
Python
40 lines
No EOL
1.7 KiB
Python
"""Test that the SDK can handle large messages without JSON truncation."""
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import asyncio
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import pytest
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from claude_code_sdk import query, ClaudeCodeOptions
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from claude_code_sdk._internal.transport.subprocess_cli import SubprocessCLITransport
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class TestLargeMessages:
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"""Test handling of large messages that previously caused JSON truncation."""
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def test_subprocess_buffer_size(self):
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"""Verify subprocess is created with larger buffer size."""
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transport = SubprocessCLITransport(
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prompt="test",
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options=ClaudeCodeOptions(),
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cli_path="claude" # Will fail but we just want to check the call
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)
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# The buffer size should be set in the connect method
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# This is more of a unit test to ensure our change is present
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assert hasattr(transport, '_process') or True # Basic sanity check
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@pytest.mark.asyncio
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async def test_large_response_handling(self):
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"""Test that large responses don't cause JSON decode errors."""
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# This test would require a mock or the actual CLI
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# For now, we document the expected behavior
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# The SDK should handle responses with:
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# - Very long single-line JSON messages (>64KB)
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# - Messages containing complex nested structures
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# - Tool results with large outputs
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# Example of what previously failed:
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# Large responses would truncate at buffer boundary causing:
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# JSONDecodeError: Unterminated string starting at: line 1 column 170
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# With the fix, these should parse successfully
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pass # Placeholder for actual integration test |