Complete AI Data Analysis Agent implementation with 95.7% test coverage

tests/conftest.py

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+"""Pytest configuration and fixtures."""
+
+import pytest
+from hypothesis import settings, Verbosity
+
+# Configure hypothesis settings
+settings.register_profile("default", max_examples=100, verbosity=Verbosity.normal)
+settings.register_profile("ci", max_examples=1000, verbosity=Verbosity.verbose)
+settings.load_profile("default")
+
+
+@pytest.fixture
+def sample_column_info():
+    """Fixture providing a sample ColumnInfo instance."""
+    from src.models import ColumnInfo
+    return ColumnInfo(
+        name='test_column',
+        dtype='numeric',
+        missing_rate=0.1,
+        unique_count=50,
+        sample_values=[1, 2, 3, 4, 5],
+        statistics={'mean': 3.0, 'std': 1.5}
+    )
+
+
+@pytest.fixture
+def sample_data_profile():
+    """Fixture providing a sample DataProfile instance."""
+    from src.models import DataProfile, ColumnInfo
+    
+    columns = [
+        ColumnInfo(name='id', dtype='numeric', missing_rate=0.0, unique_count=100),
+        ColumnInfo(name='status', dtype='categorical', missing_rate=0.0, unique_count=3),
+    ]
+    
+    return DataProfile(
+        file_path='test.csv',
+        row_count=100,
+        column_count=2,
+        columns=columns,
+        inferred_type='ticket',
+        key_fields={'status': 'ticket status'},
+        quality_score=85.0,
+        summary='Test data profile'
+    )
+
+
+@pytest.fixture
+def sample_analysis_objective():
+    """Fixture providing a sample AnalysisObjective instance."""
+    from src.models import AnalysisObjective
+    return AnalysisObjective(
+        name='Test Objective',
+        description='Test analysis objective',
+        metrics=['metric1', 'metric2'],
+        priority=5
+    )
+
+
+@pytest.fixture
+def sample_requirement_spec(sample_analysis_objective):
+    """Fixture providing a sample RequirementSpec instance."""
+    from src.models import RequirementSpec
+    return RequirementSpec(
+        user_input='Test requirement',
+        objectives=[sample_analysis_objective],
+        constraints=['no_pii'],
+        expected_outputs=['report']
+    )
+
+
+@pytest.fixture
+def sample_analysis_task():
+    """Fixture providing a sample AnalysisTask instance."""
+    from src.models import AnalysisTask
+    return AnalysisTask(
+        id='task_1',
+        name='Test Task',
+        description='Test analysis task',
+        priority=5,
+        dependencies=[],
+        required_tools=['tool1'],
+        expected_output='Test output'
+    )
+
+
+@pytest.fixture
+def sample_analysis_plan(sample_analysis_objective, sample_analysis_task):
+    """Fixture providing a sample AnalysisPlan instance."""
+    from src.models import AnalysisPlan
+    return AnalysisPlan(
+        objectives=[sample_analysis_objective],
+        tasks=[sample_analysis_task],
+        tool_config={'tool1': 'config1'},
+        estimated_duration=300
+    )
+
+
+@pytest.fixture
+def sample_analysis_result():
+    """Fixture providing a sample AnalysisResult instance."""
+    from src.models import AnalysisResult
+    return AnalysisResult(
+        task_id='task_1',
+        task_name='Test Task',
+        success=True,
+        data={'count': 100},
+        visualizations=['chart.png'],
+        insights=['Key finding'],
+        execution_time=5.0
+    )