o
    Eb                     @   s  d dl Zd dlmZ d dlZd dlmZmZ d dlm	Z	 d dl
mZmZmZ ddgZdd	 Zd
d Zdd Zdd Zdd Zejdeejdg ddd Zejdeejdg ddd Zejdedd Zejdedd Zejdedd Zejded d! Zejded"d# Zejded$d% Zejd&g gg fd gd ggg fg d'g d(g d)gg d*fg d+g d,g d(gg d-fgd.d/ Zejd0g gg fd ggg fd1ggd gfd d1gd2d ggd1d gfg d'g d3g d4gg d5fgd6d7 Zejd0g gg fd ggg fd1ggd gfd d1gd2d ggd d1gfg d'g d3g d4gg d8fgd9d: Z dS );    N)assert_array_equal)
csr_matrix
csc_matrix)maximum_flow)_add_reverse_edges_make_edge_pointers_make_tailsedmonds_karpZdinicc                  C   sb   t t" tddgddgg} t| dd t| dddd W d    d S 1 s*w   Y  d S Nr      r	   method)pytestraises	TypeErrornparrayr   graph r   F/usr/lib/python3/dist-packages/scipy/sparse/csgraph/tests/test_flow.pytest_raises_on_dense_input   s
   "r   c                  C   s`   t t! tddgddgg} t| dd t| dddd W d    d S 1 s)w   Y  d S r
   )r   r   r   r   r   r   r   r   r   test_raises_on_csc_input   
   "r   c                  C   sf   t t$ tddgddggtjd} t| dd t| dddd W d    d S 1 s,w   Y  d S )Nr   g      ?dtyper   r	   r   )r   r   
ValueErrorr   r   Zfloat64r   r   r   r   r   #test_raises_on_floating_point_input   s
   "r   c                  C   sP   t t tg dg dg} t| dd W d    d S 1 s!w   Y  d S )N)r   r      )r   r   r   r   r   r   r   r   r   r   r   r   r   r   test_raises_on_non_square_input"   s   "r    c                  C   s`   t t! tddgddgg} t| dd t| dddd W d    d S 1 s)w   Y  d S r
   r   r   r   r   r   test_raises_when_source_is_sink(   r   r!   r   source)r      c                 C   sT   t t tddgddgg}t|| d|d W d    d S 1 s#w   Y  d S Nr   r   r   r   )r"   r   r   r   r   r   (test_raises_when_source_is_out_of_bounds/      "r&   sinkc                 C   sT   t t tddgddgg}t|d| |d W d    d S 1 s#w   Y  d S r%   r   )r(   r   r   r   r   r   &test_raises_when_sink_is_out_of_bounds7   r'   r)   c                 C   s\   t ddgddgg}t|dd| d}|jdksJ tddgddgg}t|j | d S )Nr      r   r   r   r   
flow_valuer   r   r   residualtoarrayr   r   resexpected_residualr   r   r   test_simple_graph?   s
   r3   c                 C   sh   t g dg dg dg}t|dd| d}|jdksJ tg dg d	g d
g}t|j | d S )N)r   r*   r   r   r   r$   r   r   r   r   r   r   r$   r   r$   r   )r   r$   )r   r7   r   r,   r0   r   r   r   test_bottle_neck_graphJ   s
   r8   c                 C   s   t g dg dg dg dg dg dg dg dg}t|dd	| d
}|jdks+J tg dg dg dg dg dg dg dg dg}t|j | d S )N)r   
   r   r   r9   r   r   r   )r   r   r9   r   r   r   r   r   )r   r   r   r9   r   r   r   r   )r   r   r   r   r   r   r   r9   )r   r   r   r9   r   r9   r   r   )r   r   r   r   r   r   r9   r   )r   r   r   r   r   r   r   r   r      r      )r   r9   r   r   r   r   r   )r   r<   r   r9   r   r   r   r   )r   r   r<   r   r   r   r   r9   )r<   r   r   r   r   r9   r   r   )r   r   r   r   r<   r   r9   r   )r   r   r   r   r   r<   r   r9   )r   r   r   r<   r   r   r<   r   r,   r0   r   r   r   test_backwards_flowU   s*   
r=   c              	   C   s   t g dg dg dg dg dg dg}t|dd| d	}|jd
ks%J tg dg dg dg dg dg dg}t|j | d S )N)r         r   r   r   )r   r   r9      r   r   )r      r   r      r   )r   r   	   r   r   r;   )r   r   r   r:   r   rA   )r   r   r   r   r   r   r   r*   r      )r   r@      r   r   r   )r   r   r@   r   r   )r   r   r   rE   r   )r   rF   r   r   i   )r   r   rG   r:   r   rA   )r   r   r   ir   r,   r0   r   r   r   #test_example_from_clrs_chapter_26_1p   s"   
rJ   c                 C   sb   t g dg dg dg dg}t|dd| d}|jdksJ tjdtjd}t|j | d S )	N)r   r*   r   r   )r   r   r   r   )r   r   rC   r$   r   r$   r   )rA   rA   r   )	r   r   r-   r   Zzerosint32r   r.   r/   r0   r   r   r   test_disconnected_graph   s   rL   c                 C   s   d}t d|}t tt||d g }t j|d t jd}t|||f||fd}t|d|d | d}|j	dks<J ||
  }t|jj|j t|jj|j t|jj|j d S )Ni r   r   )shaper   r   )r   Zaranger   listrangeZonesrK   r   r   r-   Z	transposer   r.   dataindicesindptr)r   nrQ   rR   rP   r   r1   r2   r   r   r   "test_add_reverse_edges_large_graph   s   rT   za,b_data_expected)r   r   r   r5   r6   )r   r   r   r   r$   )rC      r:   )rA   r*      )rC   rU   r:   rA   r*   rV   r   r   c                 C   s4   t | tjt| t| fd} t| }t|j| dS )zRTest that the reversal of the edges of the input graph works
    as expected.
    )r   rM   N)r   r   rK   lenr   r   rP   )aZb_data_expectedbr   r   r   test_add_reverse_edges   s   	rZ   z
a,expectedr   r9   r4   )rA   r*   r   )r   r$   rA   r   r   c                 C   $   t | tjd} t| }t|| d S Nr   )r   r   rK   r   r   )rX   expectedZrev_edge_ptrr   r   r   test_make_edge_pointers      r^   )r   r   r   r   r   c                 C   r[   r\   )r   r   rK   r   r   )rX   r]   Ztailsr   r   r   test_make_tails   r_   r`   )!Znumpyr   Znumpy.testingr   r   Zscipy.sparser   r   Zscipy.sparse.csgraphr   Zscipy.sparse.csgraph._flowr   r   r   methodsr   r   r   r    r!   ZmarkZparametrizer&   r)   r3   r8   r=   rJ   rL   rT   rZ   r^   r`   r   r   r   r   <module>   sj    








	


