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   @   sh   d dl mZ d dlZd dlZd dlmZ d dlmZ d dlmZ ej	
dddd	d
dddgdd ZdS )    )PathN)approx)compare_images)_image_directorieszim1, im2, tol, expect_rms)basn3p02.pngbasn3p02-minorchange.png
   N)r   r   r   gBs@)r   zbasn3p02-1px-offset.pngr   g%̴V@)r   zbasn3p02-half-1px-offset.pngr   g     O@)r   zbasn3p02-scrambled.pngr   gD/Xe@)
all127.png
all128.pngr      )r
   r	   r   r   c           
      C   s   | | tttdd \}}||  }t|| | t||  ||dd}	|dkrb|	dkstn$|	dk	snt|	d t|ddkstdS )	a  
    Compare two images, expecting a particular RMS error.

    im1 and im2 are filenames relative to the baseline_dir directory.

    tol is the tolerance to pass to compare_images.

    expect_rms is the expected RMS value, or None. If None, the test will
    succeed if compare_images succeeds. Otherwise, the test will succeed if
    compare_images fails and returns an RMS error almost equal to this value.
    c                   S   s   dS )Ndummy r   r   r   H/tmp/pip-unpacked-wheel-7vhvci0g/matplotlib/tests/test_compare_images.py<lambda>=       z2test_image_comparison_expect_rms.<locals>.<lambda>T)tolZin_decoratorNZrmsg-C6?)abs)	chdirmapr   r   shutilcopyfiler   AssertionErrorr   )
Zim1Zim2r   Z
expect_rmsZtmp_pathZmonkeypatchZbaseline_dirZ
result_dirZ
result_im2resultsr   r   r    test_image_comparison_expect_rms   s    0
   r   )pathlibr   r   Zpytestr   Zmatplotlib.testing.comparer   Zmatplotlib.testing.decoratorsr   markZparametrizer   r   r   r   r   <module>   s"   
!