我正在运行一个使用随机选择的两个变量的测试。但是,该测试仅适用于'如果两个变量不同。如果它们是相同的,我想重新启动'测试。
基本上我尝试做类似以下的事情:
import random
import pytest
WORDS = ["foo", "bar"]
def test_maybe_recursive():
word1 = random.choice(WORDS)
word2 = random.choice(WORDS)
# Ensure that 'word1' and 'word2' are different
if word1 == word2:
print("The two words are the same. Re-running the test...")
test_maybe_recursive()
assert word1 != word2 # The actual test, which requires 'word1' and 'word2' to be different
if __name__ == "__main__":
test_maybe_recursive()
# pytest.main([__file__, "-s"]) # This sometimes fails
在此示例中,我使用递归来确保test_maybe_recursive
内,word1
和word2
不同。但是,在if __name__ == "__main__"
块中,如果我用pytest.main
调用替换简单函数调用,则测试失败(一半时间),因为递归不起作用。
如何让测试重启'本身,以便该示例适用于Pytest?
答案 0 :(得分:5)
您应该解决为测试设置正确的问题,而不是尝试将流量控制添加到测试运行器。 避免使用测试代码中的逻辑,因为那时您必须测试测试。
您可以使用The requested url does not exist(22): 'https://cache.ruby-lang.org/pub/ruby/4.2/ruby-4.2.7.tar.bz2'
代替random.sample
:
random.choice
假设word1, word2 = random.sample(WORDS, 2)
中没有重复项,则保证它们是人口中的唯一选择。
答案 1 :(得分:2)
不要重新调用该函数,只需让函数生成一些新单词:
import random
import pytest
WORDS = ["foo", "bar"]
def test_maybe_recursive():
word1 = random.choice(WORDS)
word2 = random.choice(WORDS)
# Ensure that 'word1' and 'word2' are different
while word1 == word2:
print("The two words are the same. Re-running the test...")
word1 = random.choice(WORDS)
word2 = random.choice(WORDS)
assert word1 != word2 # The actual test, which requires 'word1' and 'word2' to be different
if __name__ == "__main__":
test_maybe_recursive()
# pytest.main([__file__, "-s"]) # This sometimes fails