我正在运行一个相当复杂的前端堆栈。我使用的是node、gulp、webpack和angular 1.5。
我用你的喷泉生成器设置了我的项目。
我写了一些测试(失败了)，但注意到我又得到了一个意想不到的失败——所以我删除了所有的测试。Karma再次给了我一个失败(尽管没有正在运行的测试)，我不知道为什么。
它看起来像是在内部抛出一个异常，并将其解释为一个失败的测试，但我对Karma的了解不够，无法真正了解。
下面是运行gulp测试的完整打印结果。有人知道是什么原因引起的吗?
[21:38:56] Loading /Users/samredway/Development/crunchboards/cb-admin-panel/frontend/gulp_tasks/browsersync.js
[21:38:56] Loading /Users/samredway/Development/crunchboards/cb-admin-panel/frontend/gulp_tasks/karma.js
[21:38:56] Loading /Users/samredway/Development/crunchboards/cb-admin-panel/frontend/gulp_tasks/misc.js
[21:38:56] Loading /Users/samredway/Development/crunchboards/cb-admin-panel/frontend/gulp_tasks/webpack.js
[21:38:57] Using gulpfile ~/Development/crunchboards/cb-admin-panel/frontend/gulpfile.js
[21:38:57] Starting 'test'...
[21:38:57] Starting 'karma:single-run'...
13 10 2016 21:39:01.686:INFO [karma]: Karma v1.3.0 server started at http://localhost:9876/
13 10 2016 21:39:01.688:INFO [launcher]: Launching browser PhantomJS with unlimited concurrency
13 10 2016 21:39:01.693:INFO [launcher]: Starting browser PhantomJS
13 10 2016 21:39:02.717:INFO [PhantomJS 2.1.1 (Mac OS X 0.0.0)]: Connected on socket /#iN8DZHviSAx3aI7RAAAA with id 42155207
PhantomJS 2.1.1 (Mac OS X 0.0.0): Executed 0 of 0 ERROR (0.004 secs / 0 secs)
[21:39:02] 'karma:single-run' errored after 5.79 s
[21:39:02] Error: Failed 1 tests.
at failCount (/Users/samredway/Development/crunchboards/cb-admin-panel/frontend/gulp_tasks/karma.js:13:22)
at removeAllListeners (/Users/samredway/Development/crunchboards/cb-admin-panel/frontend/node_modules/karma/lib/server.js:379:7)
at Server.<anonymous> (/Users/samredway/Development/crunchboards/cb-admin-panel/frontend/node_modules/karma/lib/server.js:390:9)
at Server.g (events.js:286:16)
at emitNone (events.js:91:20)
at Server.emit (events.js:185:7)
at emitCloseNT (net.js:1549:8)
at _combinedTickCallback (internal/process/next_tick.js:71:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)
[21:39:02] 'test' errored after 5.79 s
经过一些实验和挫折，我发现如果没有运行测试，Karma会失败(显然是设计上的)，没有任何明确的错误消息。
如果没有测试通过，也会出现同样的错误——即使您在测试旁边加上x来故意绕过这些测试。
基本上你需要至少有一个通过的测试，否则你会得到这个错误，没有明确的解释为什么。