用法
Nightwatch 包含一个命令行测试运行器，它使运行测试和生成有用输出变得容易。有关如何安装运行器的详细信息，请参阅 安装 部分。根据您的安装类型，有几种不同的方法可以使用测试运行器。
全局
如果您已全局安装 Nightwatch（使用 -g 选项），则二进制文件 nightwatch 将在任何地方都可用
nightwatch [source] [options]
项目特定
如果您已将 Nightwatch 安装为项目的依赖项，则可以从 node_modules/.bin 文件夹中引用二进制文件，或者使用 NPM 提供的 npx 命令。
npx nightwatch [source] [options]
或直接
./node_modules/.bin/nightwatch [source] [options]
在 Windows 上
node node_modules/.bin/nightwatch [source] [options]
测试源
可选的 source 参数可以是一个或多个文件，或一个完整文件夹。这将覆盖在 src_folders 设置中设置的值。
运行单个测试
nightwatch tests/one/firstTest.js
运行 2 个独立测试
nightwatch tests/one/firstTest.js tests/secondTest.js
运行 1 个独立测试和 1 个文件夹
nightwatch tests/one/test.js tests/utils
运行器选项
测试运行器支持许多 CLI 参数。要显示所有参数，请运行
nightwatch --help
Usage: ./node_modules/.bin/nightwatch [source] [options]
Main options:
--env, -e ........ Specify the testing environment to use. [default: "default"]
--config, -c ..... Path to configuration file; nightwatch.conf.js or nightwatch.json are read by default if present. [required] [default: "./nightwatch.json"]
--test, -t ....... Runs a single test.
--testcase ....... Used only together with --test. Runs the specified testcase from the current suite/module.
--mocha .......... Set the test runner to use Mocha.
--timeout ........ Set the global timeout for assertion retries before an assertion fails.
--reuse-browser .. Use the same browser session to run the individual test suites
--parallel ....... Enable running the tests in parallel mode, via test workers; can also specify de desired workers count (e.g. --parallel=4)
--headless ....... Launch the browser (Chrome, Edge or Firefox) in headless mode.
--devtools ....... Automatically open devtools when launching the browser (Chrome, Edge, or Safari).
--verbose ........ Displays extended HTTP command logging during the test run.
--fail-fast ...... Run in "fail-fast" mode: if a test suite cannot be started, the rest will be aborted
--list-files ..... Shows list of files present in the project.
Tags & filtering:
--group, -g ...... Runs a group of tests (i.e. a folder)
--skipgroup, -s .. Skips one or several (comma separated) group of tests.
--filter, -f ..... Specify a filter (glob expression) as the file name format to use when loading the files.
--tag, -a ........ Only run tests with the given tag.
--skiptags ....... Skips tests that have the specified tag or tags (comma separated).
Test Filters – Mocha only:
--grep ........... Only run tests matching this string or regexp.
--fgrep .......... Only run tests containing this string.
--invert ......... Inverts --grep and --fgrep matches.
Retrying:
--retries ........ Retries failed or errored testcases up <n> times.
--suiteRetries ... Retries failed or errored testsuites up <n> times.
Reporting:
--output, -o ..... Where to save the (JUnit XML) test reports.
--reporter, -r ... Name of a predefined reporter (e.g. junit) or path to a custom reporter file to use. [default: ["junit","json","html"]]
--open ........... Opens the HTML report generated in the default browser at the end of test run
Component Tests:
--debug .......... Automatically pause the test execution after mounting the component and open the Nightwatch debug REPL interface.
--story .......... Allows to specify which story to run from the current file (when using Storybook or JSX written in component story format)
--preview ........ Used to preview a component story/test; automatically pause the test execution after mounting the component.
Info & help:
--help, -h ....... Shows this help (pass COLORS=0 env variable to disable colors).
--info ........... Shows environment info, i.e. OS, cpu, Node.js and installed browsers.
--version, -v .... Shows version information.
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