Behaviour Driven Development for python
Project description
环境要求
python3.7 及以上 pip install lettuce-Dtester
新增指令
--lf, --ff, --cc, --tn II --last-failed, --failed-first, --clear-cache, --task-name
--lf: 仅执行上次未通过的测试案例
--ff: 优先执行未通过的测试案例,通过的测试案例滞后执行
--cc: 清除case_cache
--tn: 在不与其他三个命令一起使用时指的是指定任务目录即 festures文件夹下的目录
--lf --tn task_name: 仅执行指定任务的未通过案例
--ff --tn task_name: 优先执行执行指定任务的未通过案例
--cc --tn task_name: 删除指定任务所有缓存文件,再次执行
--cc --lf --tn task_name: 会报错,因为会优先删除缓存文件,删除后无法支持--lf指令
--cc --ff --tn task_name: 会报错,因为会优先删除缓存文件,删除后无法支持--ff指令
目录信息
在根目录下生成case_cache目录
目录结构如下:(以本次执行案例文件夹为features/fee_test举例)
|---case_cache
|---{task_name}_cache
|---{task_name}(保存本次执行的py文件,用于后续的--ff, --lf执行)
|---...py(指代保存的py文件)
|---run_res(保存执行结果)
|---error_case.feature(保存出错或跳过的案例原文)
|---failed_first_case.feature(保存全部案例,但是出错的测试案例在前面)
|---res.txt(保存错误或跳过的测试案例原始信息包含报错详情)
|---lf_res(保存lf执行后结果,不执行lf命令不生成)
|---error_case.feature
|---failed_first_case.feature
|---res.txt
|---ff_res(保存ff执行后结果,不执行ff命令不生成)
|---error_case.feature
|---failed_first_case.feature
|---res.txt
使用方法
在项目根目录下存在mian.py/run.py作为入口:
import lettuce
import os
class HtmlRunner(lettuce.Runner):
def __init__(self, base_path, enable_html=False, html_filename=None, enable_email=False, recipients=None,
smtp_host=None, smtp_port=None, credential=None, *args, **kwargs):
lettuce.Runner.__init__(self, base_path, *args, **kwargs)
def test_a():
run_path = lettuce.run_task('case_a')
base_path = os.path.join(os.path.dirname(os.curdir),
run_path) # the path of .py and .feature
lettuce.world.task_path = base_path
tests_runner = HtmlRunner(base_path,
enable_html=True,
tags=("run",),
enable_xunit=True,
verbosity=4)
tests_runner.run()
if __name__ == '__main__':
test_a()
修改信息
新增文件:cacheprovider.py
修改lettuce:__init__.py 引用:
from lettuce.cacheprovider import build_failed_first_case, run_task
修改lettuce/plugins/colored_shell_output.py 文件获取案例信息
def wp(l):
if l.startswith("\033[1;32m"):
l = l.replace(" |", "\033[1;37m |\033[1;32m")
if l.startswith("\033[1;36m"):
world.skip_flag = True
l = l.replace(" |", "\033[1;37m |\033[1;36m")
if l.startswith("\033[0;36m"):
world.skip_flag = True
l = l.replace(" |", "\033[1;37m |\033[0;36m")
if l.startswith("\033[0;31m"):
world.fail_flag = True
l = l.replace(" |", "\033[1;37m |\033[0;31m")
if l.startswith("\033[1;30m"):
l = l.replace(" |", "\033[1;37m |\033[1;30m")
if l.startswith("\033[1;31m"):
world.fail_flag = True
l = l.replace(" |", "\033[1;37m |\033[0;31m")
return l
def wrt(what):
if six.PY2:
if isinstance(what, unicode):
what = what.encode('utf-8')
if six.PY3:
if isinstance(what, bytes):
print(what)
what = what.decode('utf-8')
world.case.append(what)
sys.stdout.write(what)
修改registry.py生成缓存
增加build_case方法
def case_data():
temp_list = list()
_case = world.case[:]
for i in _case:
a = i.replace("\033[1;37m", '')
a = a.replace("\033[1;32m", '')
a = a.replace("\033[1;30m", '')
a = a.replace("\033[0m", '')
a = a.replace("\033[A", '')
a = a.replace("\033[0;36m", '')
if not a.startswith("Feature"):
if a in temp_list:
...
else:
temp_list.append(a)
yield a
def build_case(scenario):
if world.fail_flag is True or world.skip_flag is True:
with open(f'{world.cache_path}/res.txt', 'a+', encoding='utf8') as f:
with open(f'{world.cache_path}/error_case.feature', 'a+', encoding='utf8') as c:
for a in case_data():
# 收集错误案例详情,支持-lf指令执行上次失败的案例
if "\033[0;31m" not in a and "\033[1;31m" not in a:
if "#" in a:
c.write(a.split('#')[0].rstrip() + '\n')
elif "|" in a:
c.write(a)
# 收集错误信息,保存在结果文件
a = a.replace("\033[0;31m", 'error!')
a = a.replace("\033[1;31m", 'error!')
a = a.replace("\033[1;41;33m", '')
f.write(f'{a}\n')
else:
with open(f'{world.cache_path}/temp_case.feature', 'a+', encoding='utf8') as t:
for a in case_data():
if "#" in a:
t.write(a.split('#')[0].rstrip() + '\n')
elif "|" in a:
t.write(a)
if world.fail_flag is True or world.skip_flag is True:
world.case_log_name = int(time.time())
with open(f'{world.cache_path}/res.txt', 'a+', encoding='utf8') as f:
f.write(f'日志详情见:{world.case_log_name}')
world.fail_flag = False
world.skip_flag = False
world.case = []
修改CallbackDict类,在每次执行一条案例完成后增加构建缓存函数
class CallbackDict(dict):
def append_to(self, where, when, function):
if not any(_function_matches(o, function) for o in self[where][when]):
self[where][when].append(function)
if where == 'scenario' and when == 'after_each':
self[where][when].append(build_case)
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