Question

我正在测试一个简单的应用程序（来自Mocha教程代码https://marcofranssen.nl/using-mocha-chai-sinon-to-test-node-js/），试图让伊斯坦布尔工作。我的问题是伊斯坦布尔工作正常，给我一个覆盖总结，但由于某种原因吐出错误，我不知道为什么。我的测试全部通过，所以他们希望不是问题。以下是我如何经营伊斯坦布尔：

$ istanbul cover test.js

=============================================================================
Writing coverage object [C:\Users\path\test\coverage\coverage.json]
Writing coverage reports at [C:\Users\path\test\coverage]
=============================================================================

=============================== Coverage summary ===============================

Statements   : 54.55% ( 6/11 )
Branches     : 100% ( 0/0 )
Functions    : 0% ( 0/2 )
Lines        : 54.55% ( 6/11 )
================================================================================
ReferenceError: describe is not defined
    at Object.<anonymous> (C:\Users\path\test.js:9:386)
    at Module._compile (module.js:435:26)
    at Object.Module._extensions.(anonymous function) [as .js] (C:\Users\path
\AppData\Roaming\npm\node_modules\istanbul\lib\hook.js:107:24)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:311:12)
    at Function.Module.runMain (module.js:467:10)
    at runFn (C:\Users\path\AppData\Roaming\npm\node_modules\istanbul\lib\com
mand\common\run-with-cover.js:122:16)
    at C:\Users\path\AppData\Roaming\npm\node_modules\istanbul\lib\command\co
mmon\run-with-cover.js:251:17
    at C:\Users\path\AppData\Roaming\npm\node_modules\istanbul\lib\util\file-
matcher.js:68:16
    at C:\Users\path\AppData\Roaming\npm\node_modules\istanbul\node_modules\a
sync\lib\async.js:52:16

我不太清楚为什么describe无法识别，因为所有测试都运行正常并通过。

Answer 1

发现问题：mocha没有全局安装，所以我不得不引用它：

istanbul cover /path/to/bin/_mocha path/to/test.js

伊斯坦布尔给我报道，但结果输出错误

1 个答案: