U
    `»{j�3  ã                   @   sb   d dl Zd dlZd dlmZmZmZ d dlmZ	 d dl
m  mZ G dd„ dƒZG dd„ dƒZdS )é    N)Ú	DataFrameÚIndexÚSeriesc                   @   sÒ   e Zd Zejeegd�dd„ ƒZej 	de
edƒƒ¡dd„ ƒZdd	„ Zd
d„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zej 	ddd d!d"d#gfd$d%g¡d&d'„ ƒZd(d)„ Zd*d+„ Zd,S )-Ú
TestSample)Úparamsc                 C   s6   |j }|tkrtj d¡}ntj dd¡}||d d�S )Né
   )Zdtype)Úparamr   ÚnpÚrandomÚrandn)ÚselfÚrequestÚklassZarr© r   úe/var/www/html/bwave/python/venv/lib/python3.8/site-packages/pandas/tests/frame/methods/test_sample.pyÚobj   s
    zTestSample.objÚtestr   c              	   C   sB  t j dd¡}t |jd|d�|jd|d�¡ t |jd|d�|jd|d�¡ t |jdt j |¡d�|jdt j |¡d�¡ t |jdt j |¡d�|jdt j |¡d�¡ t |jddt j |¡d	�|jddt j |¡d	�¡ g g  }}tdƒD ]4}t j |¡ | 	|jdd
�¡ | 	|jdd�¡ qôtj|Ž  tj|Ž  d S )Nr   éd   é   ©ÚnÚrandom_stategffffffæ?)Úfracr   é   T)r   Úreplacer   ©r   ©r   )
r	   r
   ÚrandintÚtmÚassert_equalÚsampleZRandomStateÚrangeÚseedÚappend)r   r   r   r"   Zos1Zos2Ú_r   r   r   Útest_sample   s8     ÿþþþþ

zTestSample.test_samplec                 C   sL   t |jdd�dkƒst‚t |jdd�dkƒs0t‚t |jdd�dkƒsHt‚d S )Nr   r   gÃõ(\�ÂÕ?r   é   g
×£p=
×?)Úlenr    ÚAssertionError©r   r   r   r   r   Útest_sample_lengths?   s    zTestSample.test_sample_lengthsc              	   C   s.   d}t jt|d�� |jdd� W 5 Q R X d S )Nzdrandom_state must be an integer, array-like, a BitGenerator, Generator, a numpy RandomState, or None©ÚmatchZa_string)r   ©ÚpytestÚraisesÚ
ValueErrorr    ©r   r   Úmsgr   r   r   Ú test_sample_invalid_random_stateE   s    ÿz+TestSample.test_sample_invalid_random_statec              	   C   s0   d}t jt|d�� |jddd� W 5 Q R X d S )Nz0Please enter a value for `frac` OR `n`, not bothr+   r&   g333333Ó?)r   r   r-   r1   r   r   r   Ú"test_sample_wont_accept_n_and_fracN   s    z-TestSample.test_sample_wont_accept_n_and_fracc              	   C   sP   t jtdd�� |jdd� W 5 Q R X t jtdd�� |jdd� W 5 Q R X d S )Nz<A negative number of rows requested. Please provide `n` >= 0r+   éýÿÿÿr   z?A negative number of rows requested. Please provide `frac` >= 0g333333Ó¿r   r-   r)   r   r   r   Ú$test_sample_requires_positive_n_fracT   s    þþz/TestSample.test_sample_requires_positive_n_fracc              	   C   s*   t jtdd�� |jdd� W 5 Q R X d S )Nz$Only integers accepted as `n` valuesr+   gš™™™™™	@r   r-   r)   r   r   r   Útest_sample_requires_integer_n`   s    z)TestSample.test_sample_requires_integer_nc              	   C   sœ   d}t jt|d�� |jdddgd� W 5 Q R X t jt|d�� dgd }|jd|d� W 5 Q R X t jtd	d��" tddd
gƒ}|jd|d� W 5 Q R X d S )Nú5Weights and axis to be sampled must be of same lengthr+   r&   r   é   ©r   Úweightsç      à?é   z%Fewer non-zero entries in p than sizegš™™™™™É?r   )r.   r/   r0   r    r   )r   r   r2   Úbad_weightsZbad_weight_seriesr   r   r   Ú"test_sample_invalid_weight_lengthse   s    
z-TestSample.test_sample_invalid_weight_lengthsc              	   C   s:   dgd }d}t jt|d�� |jd|d� W 5 Q R X d S )Ngš™™™™™¹¿r   z.weight vector many not include negative valuesr+   r&   r:   r-   )r   r   r>   r2   r   r   r   Útest_sample_negative_weightss   s    
z'TestSample.test_sample_negative_weightsc              	   C   s‚   dgd }t j|d< d}tjt|d�� |jd|d� W 5 Q R X dgd }t j |d< tjt|d�� |jd|d� W 5 Q R X d S )Ngš™™™™™¹?r   r   z*weight vector may not include `inf` valuesr+   r&   r:   )r	   Úinfr.   r/   r0   r    )r   r   Zweights_with_infr2   Zweights_with_ninfr   r   r   Útest_sample_inf_weightsz   s    


z"TestSample.test_sample_inf_weightsc              	   C   s6   dgd }t jtdd�� |jd|d� W 5 Q R X d S )Nr   r   ú$Invalid weights: weights sum to zeror+   r&   r:   r-   )r   r   Zzero_weightsr   r   r   Útest_sample_zero_weightsˆ   s    
z#TestSample.test_sample_zero_weightsc              	   C   s8   t jgd }tjtdd�� |jd|d� W 5 Q R X d S )Nr   rC   r+   r&   r:   )r	   Únanr.   r/   r0   r    )r   r   Znan_weightsr   r   r   Útest_sample_missing_weights�   s    z&TestSample.test_sample_missing_weightsc                 C   s8   d gd }d|d< t  |jdd|d�|jdd… ¡ d S )Nr   r<   é   r9   r   ©r   Úaxisr;   é   )r   r   r    Úiloc)r   r   Zweights_with_Noner   r   r   Útest_sample_none_weights–   s    
 ÿz#TestSample.test_sample_none_weightszfunc_str,argznp.arrayr   r&   r9   r   )znp.random.MT19937r&   )znp.random.PCG64r=   c                 C   sh   t tddƒtddƒdœƒ}t ||¡}|jdt|ƒ|ƒd�}|jdt t|ƒ|ƒ¡d�}t ||¡ d S )Nr   é   é   ©Úcol1Úcol2r&   r   )	r   r!   r   Úget_objr    ÚevalÚcomr   r   )r   Zfunc_strÚargÚframe_or_seriesr   ÚresultÚexpectedr   r   r   Útest_sample_random_statež   s
    
z#TestSample.test_sample_random_statec                 C   sˆ   |t  d¡ƒ}t j ¡ }|jd|d�}|jd|d�}|jj|jjk ¡ rLt‚|jdt j d¡d�}|jdt j d¡d�}t	 
||¡ d S )Nr   é2   r   r=   )r	   Zaranger
   Zdefault_rngr    ÚindexÚvaluesÚallr(   r   r   )r   rV   r   ÚrngZresult1Zresult2r   r   r   Útest_sample_generator®   s    
z TestSample.test_sample_generatorc              	   C   sL   t dtdƒiƒ}t ||¡}d}tjt|d�� |jddd� W 5 Q R X d S )NÚAÚabczJReplace has to be set to `True` when upsampling the population `frac` > 1.r+   r   F)r   r   )r   Úlistr   rR   r.   r/   r0   r    )r   rV   r   r2   r   r   r   Ú*test_sample_upsampling_without_replacement¾   s    ÿz5TestSample.test_sample_upsampling_without_replacementN)Ú__name__Ú
__module__Ú__qualname__r.   Zfixturer   r   r   ÚmarkZparametrizerb   r!   r%   r*   r3   r4   r6   r7   r?   r@   rB   rD   rF   rL   rY   r_   rc   r   r   r   r   r      s2   

'	ýþ
r   c                   @   s<   e Zd Zdd„ Zdd„ Zdd„ Zdd„ Zd	d
„ Zdd„ ZdS )ÚTestSampleDataFramec           	   	   C   s�  dgd }d|d< t tddƒtddƒdgd |dœƒ}|jdd	d
�}t ||jdd… ¡ ttdƒƒ}d}tjt	|d�� |jddd
� W 5 Q R X d}tjt	|d�� |jdddd� W 5 Q R X tjt
dd�� |jddd
� W 5 Q R X dgd }d|d< t |jd|d
�|jd d… ¡ t tdƒdgd dœƒ}ddg}t |jdd|d�|dg ¡ t |jdd|d�|dg ¡ dgd }d|d< t |jdd|d�|jdd… ¡ t |jdd|d�|jdd… ¡ d}tjt	|d�� |jddd� W 5 Q R X d}tjt	|d�� |jddd� W 5 Q R X ttdƒƒ}tjt	d d�� |jddd� W 5 Q R X d!}tjt	|d�� |jdddgd d� W 5 Q R X d S )"Nr   r   r9   rG   rM   rN   Úa)rP   rQ   Ú	colStringÚeasyweightsrk   r:   rJ   z@Strings cannot be passed as weights when sampling from a Series.r+   r&   Zweight_columnzLStrings can only be passed to weights when sampling from rows on a DataFrame)r   r;   rI   z-'String passed to weights not a valid column'Znot_a_real_column_namer<   rO   rH   rQ   ÚcolumnsÚrowsr[   z)No axis named 2 for object type DataFramer   )r   rI   z2No axis named not_a_name for object type DataFrameZ
not_a_namez&No axis named 1 for object type Seriesr8   )r   r!   r    r   Úassert_frame_equalrK   r   r.   r/   r0   ÚKeyError)	r   Úeasy_weight_listÚdfÚsample1Úserr2   Zweights_less_than_1Zsecond_column_weightÚweightr   r   r   r%   Ð   sp    
üÿÿ ÿ
  ÿ ÿ
" ÿzTestSampleDataFrame.test_samplec                 C   s|   dgd }d|d< t tddƒtddƒdgd d	œƒ}|jdd|d
�}t ||dg ¡ t |jddd�|jdddd�¡ d S )Nr   r&   r9   r   r   rM   rN   ri   ©rP   rQ   rj   rH   rj   é*   r   )r   rI   r   )r   r!   r    r   rn   )r   rp   rq   rr   r   r   r   Útest_sample_axis1%  s    
ÿ ÿz%TestSampleDataFrame.test_sample_axis1c              	   C   s  t dddgdddgdœddd	gd
�}tdddgd	ddgd
�}t |jd	g |jd|d�¡ tdddgd	ddgd
�}t |jd	g |jd|d�¡ tddgd	dgd
�}t |jd	g |jd|d�¡ tddgddgd
�}tjtdd�� |jd|d� W 5 Q R X d S )NrG   rJ   é   ri   ÚbÚcrO   é	   r&   )r[   r9   r   ©r;   gü©ñÒMbP?i'  r   g{®Gáz„?r   rC   r+   )	r   r   r   rn   Úlocr    r.   r/   r0   )r   rq   rs   Zser2Zser3Zser4r   r   r   Ú%test_sample_aligns_weights_with_frame5  s    $z9TestSampleDataFrame.test_sample_aligns_weights_with_framec              	   C   sH   t tj dd¡dddgd�}| d¡}t d ¡� d|d< W 5 Q R X d S )	Nr   r&   ri   ry   rz   )rl   r9   Úd)r   r	   r
   r   r    r   Zassert_produces_warning)r   rq   Zdf2r   r   r   Útest_sample_is_copyK  s    
z'TestSampleDataFrame.test_sample_is_copyc                 C   s”   t  t jdt jg¡}| ¡ }tdddgƒ}|j|d� t ||¡ tdddgdt jt jgdœƒ}|d  ¡ }|jdddd	� |d }t 	||¡ d S )
Nr9   r   r&   r|   )r\   r;   r;   g      ð?T)r   r   r;   )
r	   ÚarrayrE   Úcopyr   r    r   Zassert_numpy_array_equalr   Zassert_series_equal)r   rW   rX   rs   rq   r   r   r   Ú#test_sample_does_not_modify_weightsT  s    z7TestSampleDataFrame.test_sample_does_not_modify_weightsc                 C   sR   t tddƒtddƒdgd dœƒ}|jddd�}ttdƒƒ}tj|j|dd	� d S )
Nr   rM   rN   ri   ru   r&   T)Zignore_index)Úexact)r   r!   r    r   r   Zassert_index_equalr[   )r   rq   rW   Zexpected_indexr   r   r   Útest_sample_ignore_indexf  s    ÿz,TestSampleDataFrame.test_sample_ignore_indexN)	rd   re   rf   r%   rw   r~   r€   rƒ   r…   r   r   r   r   rh   Ì   s   U	rh   )Únumpyr	   r.   Zpandasr   r   r   Zpandas._testingZ_testingr   Zpandas.core.commonÚcoreÚcommonrT   r   rh   r   r   r   r   Ú<module>   s    @