通常我们用 Tree Shaking 在编译时移除这些 dead code以减小代码体积。 2、冗余代码 而代码覆盖率里所提到的冗余代码 和 Dead Code 又略有不同,简单来说Dead code适用于编译时,而 Code coverage 适用于运行时。 Dead code 是任何情况下都不会执行的代码,所以可以再编译阶段将其剔除。 冗余代码 是某些特定的业务...
检查是否插桩成功,可以在编译后的产物中搜索__coverage__,如果有则说明插桩成功。 为了紧密关联插桩代码的源代码,我们适配了各种provider,将环境变量发送到Canyon服务端,兑换到reportID,方便覆盖率数据聚合计算完成后的覆盖率源文件的关联展示。 我们还提供了babel-plugin-canyon的babel插件,可以在各种流水线内(aws,git...
(See the manual for details.) The JSCoverage user interface now displays a warning when used with file: URLs. The --verbose option to jscoverage now produces better output. Report loading is now faster (thanks to Klaus). Some bugs involving augmented object prototypes were fixed. ...
检查是否插桩成功,可以在编译后的产物中搜索__coverage__,如果有则说明插桩成功。 为了紧密关联插桩代码的源代码,我们适配了各种provider,将环境变量发送到Canyon服务端,兑换到reportID,方便覆盖率数据聚合计算完成后的覆盖率源文件的关联展示。 我们还提供了babel-plugin-canyon的babel插件,可以在各种流水线内(aws,gitl...
3. 生成报告(report) 这一步会依据全局标量中的覆盖率信息生成特定格式的报告,如html、lcov、cobertura、teamcity等。 一个样例 //source codefunctionabs(num){if(abs >0)returnnum;elsereturn-num; } //instrumented codevar__cov_iypKC$dWI6uJFmvxThycaA = (Function('return this'))();if(!__cov_i...
Javascript代码覆盖测试工具(Code Coverage Tool) Istanbul Karma (formerly Testacular) Blanket.js JSCover This is a code coverage tool that is the child of JSCoverage and utilizes a java server to take your javascript files, dynamically inject coverage instrumentation code, and report the results in ...
In addition, it will get much easier for a developer to navigate through the code of a suite with many tests. There are multiple alternative structures for the test suite that you may consider like given-when-then and RITE ❌ Otherwise: When looking at a report with a flat and long ...
JSLint, The JavaScript Code Quality and Coverage Tool. This file allows JSLint to be run from a web browser. It can accept a source program and analyze it without sending it over the network.
For Jest, Karma, and Mocha you can also see a code coverage report right in IntelliJ IDEA. Navigation IntelliJ IDEA lets you quickly jump from the source code to the related test file with the Go to test action (CtrlShift0T or Navigate | Test). For example, from auth.js you can...
type (or copy-paste) the following code in thetest.jsfile: x=42;if(false)x=-1; Now run the istanbul command to generate a coverage report: node ./node_modules/.bin/istanbul cover test.js Alternatively you can insert the line