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# Testing Utilities
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Testing utilities for scientific data validation and comparison.
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## Capabilities
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### Assertion Functions
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Functions for testing and validating scipp data structures in unit tests.
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```python { .api }
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def assert_identical(a, b):
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    """
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    Assert that two variables are identical
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    Args:
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        a (Variable or DataArray): First variable
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        b (Variable or DataArray): Second variable
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    Raises:
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        AssertionError: If variables are not identical
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    """
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def assert_allclose(a, b, **kwargs):
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    """
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    Assert that two variables are close within tolerance
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    Args:
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        a (Variable or DataArray): First variable
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        b (Variable or DataArray): Second variable
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        **kwargs: Tolerance parameters (rtol, atol)
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    Raises:
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        AssertionError: If variables are not close
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    """
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```