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237 lines
No EOL
8.9 KiB
Python
237 lines
No EOL
8.9 KiB
Python
"""
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Unit tests for trustgraph.decoding.pdf.pdf_decoder
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"""
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import pytest
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import base64
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import tempfile
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from unittest.mock import AsyncMock, MagicMock, patch, call
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from unittest import IsolatedAsyncioTestCase
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from trustgraph.decoding.pdf.pdf_decoder import Processor
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from trustgraph.schema import Document, TextDocument, Metadata
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class TestPdfDecoderProcessor(IsolatedAsyncioTestCase):
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"""Test PDF decoder processor functionality"""
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@patch('trustgraph.decoding.pdf.pdf_decoder.Consumer')
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@patch('trustgraph.decoding.pdf.pdf_decoder.Producer')
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@patch('trustgraph.base.flow_processor.FlowProcessor.__init__')
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async def test_processor_initialization(self, mock_flow_init, mock_producer, mock_consumer):
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"""Test PDF decoder processor initialization"""
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# Arrange
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mock_flow_init.return_value = None
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config = {
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'id': 'test-pdf-decoder',
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'taskgroup': AsyncMock()
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}
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# Act
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with patch.object(Processor, 'register_specification') as mock_register:
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processor = Processor(**config)
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# Assert
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mock_flow_init.assert_called_once()
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# Verify register_specification was called twice (consumer and producer)
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assert mock_register.call_count == 2
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# Check consumer spec
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consumer_call = mock_register.call_args_list[0]
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consumer_spec = consumer_call[0][0]
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assert consumer_spec.name == "input"
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assert consumer_spec.schema == Document
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assert consumer_spec.handler == processor.on_message
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# Check producer spec
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producer_call = mock_register.call_args_list[1]
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producer_spec = producer_call[0][0]
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assert producer_spec.name == "output"
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assert producer_spec.schema == TextDocument
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@patch('trustgraph.decoding.pdf.pdf_decoder.Consumer')
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@patch('trustgraph.decoding.pdf.pdf_decoder.Producer')
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@patch('trustgraph.decoding.pdf.pdf_decoder.PyPDFLoader')
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@patch('trustgraph.base.flow_processor.FlowProcessor.__init__')
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async def test_on_message_success(self, mock_flow_init, mock_pdf_loader_class, mock_producer, mock_consumer):
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"""Test successful PDF processing"""
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# Arrange
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mock_flow_init.return_value = None
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# Mock PDF content
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pdf_content = b"fake pdf content"
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pdf_base64 = base64.b64encode(pdf_content).decode('utf-8')
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# Mock PyPDFLoader
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mock_loader = MagicMock()
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mock_page1 = MagicMock(page_content="Page 1 content")
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mock_page2 = MagicMock(page_content="Page 2 content")
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mock_loader.load.return_value = [mock_page1, mock_page2]
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mock_pdf_loader_class.return_value = mock_loader
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# Mock message
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mock_metadata = Metadata(id="test-doc")
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mock_document = Document(metadata=mock_metadata, data=pdf_base64)
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mock_msg = MagicMock()
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mock_msg.value.return_value = mock_document
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# Mock flow - needs to be a callable that returns an object with send method
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mock_output_flow = AsyncMock()
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mock_flow = MagicMock(return_value=mock_output_flow)
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config = {
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'id': 'test-pdf-decoder',
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'taskgroup': AsyncMock()
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}
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with patch.object(Processor, 'register_specification'):
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processor = Processor(**config)
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# Act
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await processor.on_message(mock_msg, None, mock_flow)
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# Assert
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# Verify PyPDFLoader was called
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mock_pdf_loader_class.assert_called_once()
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mock_loader.load.assert_called_once()
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# Verify output was sent for each page
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assert mock_output_flow.send.call_count == 2
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# Check first page output
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first_call = mock_output_flow.send.call_args_list[0]
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first_output = first_call[0][0]
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assert isinstance(first_output, TextDocument)
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assert first_output.metadata == mock_metadata
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assert first_output.text == b"Page 1 content"
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# Check second page output
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second_call = mock_output_flow.send.call_args_list[1]
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second_output = second_call[0][0]
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assert isinstance(second_output, TextDocument)
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assert second_output.metadata == mock_metadata
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assert second_output.text == b"Page 2 content"
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@patch('trustgraph.decoding.pdf.pdf_decoder.Consumer')
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@patch('trustgraph.decoding.pdf.pdf_decoder.Producer')
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@patch('trustgraph.decoding.pdf.pdf_decoder.PyPDFLoader')
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@patch('trustgraph.base.flow_processor.FlowProcessor.__init__')
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async def test_on_message_empty_pdf(self, mock_flow_init, mock_pdf_loader_class, mock_producer, mock_consumer):
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"""Test handling of empty PDF"""
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# Arrange
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mock_flow_init.return_value = None
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# Mock PDF content
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pdf_content = b"fake pdf content"
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pdf_base64 = base64.b64encode(pdf_content).decode('utf-8')
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# Mock PyPDFLoader with no pages
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mock_loader = MagicMock()
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mock_loader.load.return_value = []
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mock_pdf_loader_class.return_value = mock_loader
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# Mock message
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mock_metadata = Metadata(id="test-doc")
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mock_document = Document(metadata=mock_metadata, data=pdf_base64)
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mock_msg = MagicMock()
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mock_msg.value.return_value = mock_document
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# Mock flow - needs to be a callable that returns an object with send method
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mock_output_flow = AsyncMock()
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mock_flow = MagicMock(return_value=mock_output_flow)
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config = {
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'id': 'test-pdf-decoder',
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'taskgroup': AsyncMock()
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}
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with patch.object(Processor, 'register_specification'):
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processor = Processor(**config)
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# Act
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await processor.on_message(mock_msg, None, mock_flow)
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# Assert
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# Verify PyPDFLoader was called
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mock_pdf_loader_class.assert_called_once()
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mock_loader.load.assert_called_once()
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# Verify no output was sent
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mock_output_flow.send.assert_not_called()
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@patch('trustgraph.decoding.pdf.pdf_decoder.Consumer')
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@patch('trustgraph.decoding.pdf.pdf_decoder.Producer')
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@patch('trustgraph.decoding.pdf.pdf_decoder.PyPDFLoader')
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@patch('trustgraph.base.flow_processor.FlowProcessor.__init__')
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async def test_on_message_unicode_content(self, mock_flow_init, mock_pdf_loader_class, mock_producer, mock_consumer):
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"""Test handling of unicode content in PDF"""
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# Arrange
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mock_flow_init.return_value = None
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# Mock PDF content
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pdf_content = b"fake pdf content"
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pdf_base64 = base64.b64encode(pdf_content).decode('utf-8')
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# Mock PyPDFLoader with unicode content
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mock_loader = MagicMock()
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mock_page = MagicMock(page_content="Page with unicode: 你好世界 🌍")
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mock_loader.load.return_value = [mock_page]
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mock_pdf_loader_class.return_value = mock_loader
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# Mock message
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mock_metadata = Metadata(id="test-doc")
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mock_document = Document(metadata=mock_metadata, data=pdf_base64)
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mock_msg = MagicMock()
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mock_msg.value.return_value = mock_document
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# Mock flow - needs to be a callable that returns an object with send method
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mock_output_flow = AsyncMock()
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mock_flow = MagicMock(return_value=mock_output_flow)
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config = {
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'id': 'test-pdf-decoder',
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'taskgroup': AsyncMock()
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}
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with patch.object(Processor, 'register_specification'):
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processor = Processor(**config)
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# Act
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await processor.on_message(mock_msg, None, mock_flow)
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# Assert
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# Verify output was sent
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mock_output_flow.send.assert_called_once()
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# Check output
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call_args = mock_output_flow.send.call_args[0][0]
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assert isinstance(call_args, TextDocument)
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assert call_args.text == "Page with unicode: 你好世界 🌍".encode('utf-8')
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@patch('trustgraph.base.flow_processor.FlowProcessor.add_args')
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def test_add_args(self, mock_parent_add_args):
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"""Test add_args calls parent method"""
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# Arrange
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mock_parser = MagicMock()
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# Act
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Processor.add_args(mock_parser)
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# Assert
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mock_parent_add_args.assert_called_once_with(mock_parser)
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@patch('trustgraph.decoding.pdf.pdf_decoder.Processor.launch')
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def test_run(self, mock_launch):
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"""Test run function"""
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# Act
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from trustgraph.decoding.pdf.pdf_decoder import run
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run()
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# Assert
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mock_launch.assert_called_once_with("pdf-decoder",
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"\nSimple decoder, accepts PDF documents on input, outputs pages from the\nPDF document as text as separate output objects.\n\nSupports both inline document data and fetching from librarian via Pulsar\nfor large documents.\n")
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if __name__ == '__main__':
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pytest.main([__file__]) |