用例设计原则
help帮助1.查看pytest命令行参数,可以用pytest -h 或pytest —help查看 C:\Users\admin>pytest -h
usage: pytest [options] [file_or_dir] [file_or_dir] [...]
positional arguments:
file_or_dir
general:
-k EXPRESSION only run tests which match the given substring
expression. An expression is a python evaluatable
expression where all names are substring-matched
against test names and their parent classes. Example:
-k 'test_method or test_other' matches all test
functions and classes whose name contains
'test_method' or 'test_other', while -k 'not
test_method' matches those that don't contain
'test_method' in their names. Additionally keywords
are matched to classes and functions containing extra
names in their 'extra_keyword_matches' set, as well as
functions which have names assigned directly to them.
-m MARKEXPR only run tests matching given mark expression.
example: -m 'mark1 and not mark2'.
--markers show markers (builtin, plugin and per-project ones).
-x, --exitfirst exit instantly on first error or failed test
reporting:
-v, --verbose increase verbosity.
-q, --quiet decrease verbosity.
--verbosity=VERBOSE set verbosity
只贴了一部分 按以下目录写用例D:YOYO __init__.py
test_class.py
# content of test_class.py
class TestClass:
def test_one(self):
x = "this"
assert 'h' in x
def test_two(self):
x = "hello"
assert hasattr(x, 'check')
def test_three(self):
a = "hello"
b = "hello world"
assert a in b
test_sample.py
# content of test_sample.py
def func(x):
return x +1
def test_answer():
assert func(3)==5 python -mcmd执行pytest用例有三种方法,以下三种方法都可以,一般推荐第一个
如果不带参数,在某个文件夹下执行时,它会查找该文件夹下所有的符合条件的用例(查看用例设计原则) 执行用例规则1.执行某个目录下所有的用例
2.执行某一个py文件下用例
3.-k 按关键字匹配
这将运行包含与给定字符串表达式匹配的名称的测试,其中包括Python 4.按节点运行 每个收集的测试都分配了一个唯一的nodeid,它由模块文件名和后跟说明符组成 运行.py模块里面的某个函数
运行.py模块里面,测试类里面的某个方法
5.标记表达式
将运行用@ pytest.mark.slow装饰器修饰的所有测试。 6.从包里面运行
这将导入pkg.testing并使用其文件系统位置来查找和运行测试。 -x 遇到错误时停止测试
从运行结果可以看出,本来有3个用例,第二个用例失败后就没继续往下执行了 D:\YOYO>pytest -x test_class.py
============================= test session starts =============================
platform win32 -- Python 3.6.0, pytest-3.6.3, py-1.5.4, pluggy-0.6.0
rootdir: D:\YOYO, inifile:
collected 3 items
test_class.py .F
================================== FAILURES ===================================
_____________________________ TestClass.test_two ______________________________
self = <YOYO.test_class.TestClass object at 0x0000000003A29780>
def test_two(self):
x = "hello"
> assert hasattr(x, 'check')
E AssertionError: assert False
E + where False = hasattr('hello', 'check')
test_class.py:11: AssertionError
===================== 1 failed, 1 passed in 0.05 seconds ====================== —maxfail=num
当用例错误个数达到指定数量时,停止测试 D:\YOYO>pytest --maxfail=1
============================= test session starts =============================
platform win32 -- Python 3.6.0, pytest-3.6.3, py-1.5.4, pluggy-0.6.0
rootdir: D:\YOYO, inifile:
collected 4 items
test_class.py .F
================================== FAILURES ===================================
_____________________________ TestClass.test_two ______________________________
self = <YOYO.test_class.TestClass object at 0x0000000003A3D080>
def test_two(self):
x = "hello"
> assert hasattr(x, 'check')
E AssertionError: assert False
E + where False = hasattr('hello', 'check')
test_class.py:11: AssertionError
===================== 1 failed, 1 passed in 0.06 seconds ====================== |
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