如果你還想從頭學起Pytest,可以看看這個系列的文章哦!

https://www.cnblogs.com/poloyy/category/1690628.html

 

前言

pytest配置檔案可以改變pytest的執行方式,它是一個固定的檔案pytest.ini檔案,讀取配置資訊,按指定的方式去執行

 

非test檔案

pytest裡面有些檔案是非test檔案

  • pytest.ini:pytest的主配置檔案,可以改變pytest的預設行為
  • conftest.py:測試用例的一些fixture配置
  • _init_.py:識別該資料夾為python的package包

 

檢視pytest.ini的配置選項

cmd執行

pytest --help
.

 

找到這部分內容

[pytest] ini-options in the first pytest.ini|tox.ini|setup.cfg file found:

  markers (linelist):   markers for test functions
  empty_parameter_set_mark (string):
                        default marker for empty parametersets
  norecursedirs (args): directory patterns to avoid for recursion
  testpaths (args):     directories to search for tests when no files or directories are given in the command line.
  usefixtures (args):   list of default fixtures to be used with this project
  python_files (args):  glob-style file patterns for Python test module discovery
  python_classes (args):
                        prefixes or glob names for Python test class discovery
  python_functions (args):
                        prefixes or glob names for Python test function and method discovery
  disable_test_id_escaping_and_forfeit_all_rights_to_community_support (bool):
                        disable string escape non-ascii characters, might cause unwanted side effects(use at your own
                        risk)
  console_output_style (string):
                        console output: "classic", or with additional progress information ("progress" (percentage) |
                        "count").
  xfail_strict (bool):  default for the strict parameter of xfail markers when not given explicitly (default: False)
  enable_assertion_pass_hook (bool):
                        Enables the pytest_assertion_pass hook.Make sure to delete any previously generated pyc cache
                        files.
  junit_suite_name (string):
                        Test suite name for JUnit report
  junit_logging (string):
                        Write captured log messages to JUnit report: one of no|log|system-out|system-err|out-err|all
  junit_log_passing_tests (bool):
                        Capture log information for passing tests to JUnit report:
  junit_duration_report (string):
                        Duration time to report: one of total|call
  junit_family (string):
                        Emit XML for schema: one of legacy|xunit1|xunit2
  doctest_optionflags (args):
                        option flags for doctests
  doctest_encoding (string):
                        encoding used for doctest files
  cache_dir (string):   cache directory path.
  filterwarnings (linelist):
                        Each line specifies a pattern for warnings.filterwarnings. Processed after -W/--pythonwarnings.
  log_print (bool):     default value for --no-print-logs
  log_level (string):   default value for --log-level
  log_format (string):  default value for --log-format
  log_date_format (string):
                        default value for --log-date-format
  log_cli (bool):       enable log display during test run (also known as "live logging").
  log_cli_level (string):
                        default value for --log-cli-level
  log_cli_format (string):
                        default value for --log-cli-format
  log_cli_date_format (string):
                        default value for --log-cli-date-format
  log_file (string):    default value for --log-file
  log_file_level (string):
                        default value for --log-file-level
  log_file_format (string):
                        default value for --log-file-format
  log_file_date_format (string):
                        default value for --log-file-date-format
  log_auto_indent (string):
                        default value for --log-auto-indent
  faulthandler_timeout (string):
                        Dump the traceback of all threads if a test takes more than TIMEOUT seconds to finish. Not
                        available on Windows.
  addopts (args):       extra command line options
  minversion (string):  minimally required pytest version
  rsyncdirs (pathlist): list of (relative) paths to be rsynced for remote distributed testing.
  rsyncignore (pathlist):
                        list of (relative) glob-style paths to be ignored for rsyncing.
  looponfailroots (pathlist):
                        directories to check for changes

 

pytest.ini應該放哪裡?

就放在專案根目錄下 ,不要亂放,不要亂起其他名字

 

接下來講下常用的配置項

 

marks

作用:測試用例中添加了 @pytest.mark.webtest 裝飾器,如果不新增marks選項的話,就會報warnings

格式:list列表型別

寫法:

[pytest]
markers =
    weibo: this is weibo page
    toutiao: toutiao
    xinlang: xinlang

 

xfail_strict

作用:設定xfail_strict = True可以讓那些標記為@pytest.mark.xfail但實際通過顯示XPASS的測試用例被報告為失敗

格式:True 、False(預設),1、0

寫法:

[pytest]

# mark標記說明
markers =
    weibo: this is weibo page
    toutiao: toutiao
    xinlang: xinlang

xfail_strict = True

 

具體程式碼栗子

未設定 xfail_strict = True 時,測試結果顯示XPASS

@pytest.mark.xfail()
def test_case1():
    a = "a"
    b = "b"
    assert a != b

collecting ... collected 1 item

02斷言異常.py::test_case1 XPASS [100%]

============================= 1 xpassed in 0.02s ==============================

 

已設定 xfail_strict = True 時,測試結果顯示failed

collecting ... collected 1 item

02斷言異常.py::test_case1 FAILED                                         [100%]
02斷言異常.py:54 (test_case1)
[XPASS(strict)] 

================================== FAILURES ===================================
_________________________________ test_case1 __________________________________
[XPASS(strict)] 
=========================== short test summary info ===========================
FAILED 02斷言異常.py::test_case1
============================== 1 failed in 0.02s ==============================

 

addopts

作用:addopts引數可以更改預設命令列選項,這個當我們在cmd輸入一堆指令去執行用例的時候,就可以用該引數代替了,省去重複性的敲命令工作

比如:想測試完生成報告,失敗重跑兩次,一共執行兩次,通過分散式去測試,如果在cmd中寫的話,命令會很長

pytest -v --rerun=2 --count=2 --html=report.html --self-contained-html -n=auto

 

每次都這樣敲不太現實,addopts就可以完美解決這個問題

[pytest]

# mark
markers =
    weibo: this is weibo page
    toutiao: toutiao
    xinlang: xinlang

xfail_strict = True

# 命令列引數
addopts = -v --reruns=1 --count=2 --html=reports.html --self-contained-html -n=auto

加了addopts之後,我們在cmd中只需要敲pytest就可以生效了!!

 

log_cli

作用:控制檯實時輸出日誌

格式:log_cli=True 或False(預設),或者log_cli=1 或 0

log_cli=0的執行結果

 

log_cli=1的執行結果

結論

很明顯,加了log_cli=1之後,可以清晰看到哪個package下的哪個module下的哪個測試用例是否passed還是failed;

所以平時測試程式碼是否有問題的情況下推薦加!!!但如果拿去批量跑測試用例的話不建議加,誰知道會不會影響執行效能呢?

 

norecursedirs

作用:pytest 收集測試用例時,會遞迴遍歷所有子目錄,包括某些你明知道沒必要遍歷的目錄,遇到這種情況,可以使用 norecursedirs 引數簡化 pytest 的搜尋工作【還是挺有用的!!!】

預設設定: norecursedirs = .* build dist CVS _darcs {arch} *.egg 

正確寫法:多個路徑用空格隔開

[pytest]

norecursedirs = .* build dist CVS _darcs {arch} *.egg venv src resources log report util

 

更改測試用例收集規則

pytest預設的測試用例收集規則

  • 檔名以 test_*.py 檔案和 *_test.py
  • 以  test_ 開頭的函式
  • 以  Test 開頭的類,不能包含 __init__ 方法
  • 以  test_ 開頭的類裡面的方法

 

我們是可以修改或者新增這個用例收集規則的;當然啦,是建議在原有的規則上新增的,如下配置

[pytest]

python_files =     test_*  *_test  test*
python_classes =   Test*   test*
python_functions = test_*  test*

 

&nbs