mirror of
https://github.com/PiBrewing/craftbeerpi4.git
synced 2024-11-15 11:38:12 +01:00
57 lines
1.6 KiB
Python
57 lines
1.6 KiB
Python
# Tests aimed at pandas.core.indexers
|
|
import numpy as np
|
|
import pytest
|
|
|
|
from pandas.core.indexers import is_scalar_indexer, length_of_indexer, validate_indices
|
|
|
|
|
|
def test_length_of_indexer():
|
|
arr = np.zeros(4, dtype=bool)
|
|
arr[0] = 1
|
|
result = length_of_indexer(arr)
|
|
assert result == 1
|
|
|
|
|
|
def test_is_scalar_indexer():
|
|
indexer = (0, 1)
|
|
assert is_scalar_indexer(indexer, 2)
|
|
assert not is_scalar_indexer(indexer[0], 2)
|
|
|
|
indexer = (np.array([2]), 1)
|
|
assert is_scalar_indexer(indexer, 2)
|
|
|
|
indexer = (np.array([2]), np.array([3]))
|
|
assert is_scalar_indexer(indexer, 2)
|
|
|
|
indexer = (np.array([2]), np.array([3, 4]))
|
|
assert not is_scalar_indexer(indexer, 2)
|
|
|
|
assert not is_scalar_indexer(slice(None), 1)
|
|
|
|
indexer = 0
|
|
assert is_scalar_indexer(indexer, 1)
|
|
|
|
indexer = (0,)
|
|
assert is_scalar_indexer(indexer, 1)
|
|
|
|
|
|
class TestValidateIndices:
|
|
def test_validate_indices_ok(self):
|
|
indices = np.asarray([0, 1])
|
|
validate_indices(indices, 2)
|
|
validate_indices(indices[:0], 0)
|
|
validate_indices(np.array([-1, -1]), 0)
|
|
|
|
def test_validate_indices_low(self):
|
|
indices = np.asarray([0, -2])
|
|
with pytest.raises(ValueError, match="'indices' contains"):
|
|
validate_indices(indices, 2)
|
|
|
|
def test_validate_indices_high(self):
|
|
indices = np.asarray([0, 1, 2])
|
|
with pytest.raises(IndexError, match="indices are out"):
|
|
validate_indices(indices, 2)
|
|
|
|
def test_validate_indices_empty(self):
|
|
with pytest.raises(IndexError, match="indices are out"):
|
|
validate_indices(np.array([0, 1]), 0)
|