a
    CCCfx                     @   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[Zcsc)densityformatZrandom_stateZcsrZcoo   c                 C   sB   | j D ]6}| 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   \/var/www/html/django/DPS/env/lib/python3.9/site-packages/scipy/linalg/tests/test_sketches.pytest_sketch_dimensions1   s    

z4TestClarksonWoodruffTransform.test_sketch_dimensionsc                 C   sR   | j D ]F}| 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   ZS1ZS2r   r   r   ,test_seed_returns_identical_transform_matrix9   s    





zJTestClarksonWoodruffTransform.test_seed_returns_identical_transform_matrixc                 C   sf   | j D ]Z}| jD ]N}t|| j|d}t|| j|d}t|rD| }t|rT| }t|| qqd S r   )r   r   r   r   r   r   r   )r   r   r   Zsketch1Zsketch2r   r   r   test_seed_returns_identicallyD   s    

z;TestClarksonWoodruffTransform.test_seed_returns_identicallyc                 C   s   d}| j D ]z}t|r t|}ntj|}| jD ]P}t|| j|d}t|rXt|}ntj|}t|| d| kr2|d7 }q2q
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   $test_sketch_preserves_frobenius_normS   s    



zBTestClarksonWoodruffTransform.test_sketch_preserves_frobenius_normc                 C   sv   d}t td}tj| j}| jD ]>}t| j||d}tj|}t|| d| kr&|d7 }q&t	|dk d S )Nr   g      @r
   g      ?r   )
intr"   ceilr#   r   xr   r   r$   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"   randomZRandomStaterngr   r   r   r   r   ZrandnZA_denser   ZA_cscZA_csrZA_coor   sqrtr+   r   r    r!   r(   r,   r   r   r   r   r	      s2   


r	   )r0   numpyr"   Znumpy.testingr   r   Zscipy.linalgr   Zscipy.linalg._sketchesr   Zscipy.sparser   r   Zscipy.sparse.linalgr   r	   r   r   r   r   <module>   s   