python - 关键 - 在 Travis CI 中运行时出错| pytest

Question

在 Travis CI 上运行 Pytest 时，我收到 Key -Error。请在下面找到我的程序:

import sys
import os
sys.path.append(os.path.dirname(__file__)+"/../")
from src.read_files import VEHICLE_DATA
from src.main import create_parser

def getvehicles(climate):
    '''
       :param climate: type of climate
       :return: Based on climate, return available vehicles
    '''

    bike = VEHICLE_DATA['bike']
    tuktuk = VEHICLE_DATA['tuktuk']
    car = VEHICLE_DATA['car']

    if climate == "Sunny":
        vehicle = [[bike, tuktuk, car], -0.1]
    elif climate == "Rainy":
        vehicle = [[car, tuktuk], 0.2]
    else:
        vehicle = [[car, bike], 0.0]
    return vehicle

对应的pytest如下:

import sys
import os
sys.path.append(os.path.dirname(__file__)+"/../")
from src import traffic_problem_1 as tp
import pytest

@pytest.mark.parametrize('climate, speed',          \
                        [                           \
                            ('Sunny', -0.1),        \
                            ('Windy', 0.0),         \
                            ('Rainy', 0.2)
                        ])
def test_when_climate_sunny_return_all_vechicles(climate, speed):
    crater_speed = tp.getvehicles(climate)
    assert crater_speed[1] == speed

上述测试在我的本地计算机上成功运行。但 Travis CI 不是，请找到 Travis CI 日志的链接:

https://travis-ci.org/pythonprogsnscripts/geekttrustproblems/builds/570241873

如果退伍军人能提出一些想法那就太好了

Answer 1

os.listdir 不保证确定的文件排序；它会因操作系统和文件系统组合而异。来自 the docs :

os.listdir(path='.')

Return a list containing the names of the entries in the directory given by path. The list is in arbitrary order [...]

就您而言，这意味着 JSON_FILES[1] 在某些系统上将是 vehicle_data.json ，而在其他系统上将是 orbit_data.json ，导致测试失败。解决方案是自己强制执行命令，例如通过排序:

JSON_FILES = sorted(os.listdir('inputdata'))