JavaScript代码覆盖率工具：istanbul

jopen 10年前

istanbul 是一个采用 JavaScript 开发代码覆盖率检查工具。它具有以下特性：

All-javascript instrumentation library that tracks statement, branch, and function coverage and reverse-engineers line coverage with 100% fidelity.
Module loader hooks to instrument code on the fly
Command line tools to run node unit tests "with coverage turned on" and no cooperation whatsoever from the test runner
HTML and LCOV reporting.
Ability to use as middleware when serving JS files that need to be tested on the browser.
Can be used on the command line as well as a library
Based on the awesome esprima parser and the equally awesome escodegen code generator
Well-tested on node 0.4.x, 0.6.x, 0.8.x and the browser (instrumentation library only)

用例

支持以下用例：

transparent coverage of nodejs unit tests
ability to use in an npm test script for conditional coverage
instrumentation of files in batch mode for browser tests (using yeti for example)
Server side code coverage for nodejs by embedding it as custom middleware

示例报表：

JavaScript代码覆盖率工具：istanbul