o
    gx                     @   sb   d Z ddlZddlmZmZ ddlmZ ddlm	Z	 ddl
mZmZ ddlmZ G dd	 d	ZdS )
zTests for _sketches.py.    N)assert_assert_equal)clarkson_woodruff_transform)
cwt_matrix)issparserand)normc                   @   s   e Zd ZdZejjddZdZdZ	dZ
dZg dZeee	Zeee	e
d	ed
Zeee	e
ded
Zeee	e
ded
ZeeeegZeedee Zdd Zdd Zdd Zdd Zdd ZdS )TestClarksonWoodruffTransformz1
    Testing the Clarkson Woodruff Transform
    iGFseedi  d   皙?   )
iڦhiv7iSRir6xhi'@wiڷMiZiTzYi CiUf[csc)densityformatrandom_statecsrcoo   c                 C   sB   | j D ]}| jD ]}t|| j|d}t|j| j| jfk qqd S Nr
   )test_matricesseedsr   n_sketch_rowsr   shapen_cols)selfAr   sketch r   ^/home/ubuntu/cloudmapper/venv/lib/python3.10/site-packages/scipy/linalg/tests/test_sketches.pytest_sketch_dimensions1   s   

z4TestClarksonWoodruffTransform.test_sketch_dimensionsc                 C   sR   | j D ]#}| jD ]}t| j| j|d }t| j| j|d }t|| qqd S r   )r   r   r   r   n_rowstoarrayr   )r   r   r   S1S2r   r   r    ,test_seed_returns_identical_transform_matrix9   s   



zJTestClarksonWoodruffTransform.test_seed_returns_identical_transform_matrixc                 C   sf   | j D ]-}| jD ]'}t|| j|d}t|| j|d}t|r"| }t|r*| }t|| qqd S r   )r   r   r   r   r   r#   r   )r   r   r   sketch1sketch2r   r   r    test_seed_returns_identicallyD   s   

z;TestClarksonWoodruffTransform.test_seed_returns_identicallyc                 C   s   d}| j D ]=}t|rt|}ntj|}| jD ](}t|| j|d}t|r,t|}ntj|}t|| d| krA|d7 }qqt	|dk d S )Nr   r
   r   r   )
r   r   r   nplinalgr   r   r   absr   )r   n_errorsr   	true_normr   r   sketch_normr   r   r    $test_sketch_preserves_frobenius_normS   s"   



zBTestClarksonWoodruffTransform.test_sketch_preserves_frobenius_normc                 C   sv   d}t td}tj| j}| jD ]}t| j||d}tj|}t|| d| kr2|d7 }qt	|dk d S )Nr   g      @r
   g      ?r   )
intr*   ceilr+   r   xr   r   r,   r   )r   r-   r   r.   r   r   r/   r   r   r    !test_sketch_preserves_vector_normj   s   
z?TestClarksonWoodruffTransform.test_sketch_preserves_vector_normN)__name__
__module____qualname____doc__r*   randomRandomStaterngr"   r   r   r   r   randnA_denser   A_cscA_csrA_coor   sqrtr3   r!   r&   r)   r0   r4   r   r   r   r    r	      s4    


r	   )r8   numpyr*   numpy.testingr   r   scipy.linalgr   scipy.linalg._sketchesr   scipy.sparser   r   scipy.sparse.linalgr   r	   r   r   r   r    <module>   s    