了解 Sinon.js 的 stub.yield()
Understanding Sinon.js's stub.yield()
stub.yield([arg1, arg2, ...])
Invoke callbacks passed to the stub with the given arguments. If the stub was never called with a function argument, yield throws an error. Also aliased as invokeCallback.
“如果从未使用函数参数调用存根”是什么意思？
这意味着如果调用了存根，但给定参数中没有函数，则会抛出异常。
考虑这个存根：
sinon.stub(fs, 'readFile');
现在测试运行这些行：
fs.readFile('some-file'); // no callback passed
fs.readFile.yield(); // throws, because the stub was never invoked with a function
stub.yield([arg1, arg2, ...])Invoke callbacks passed to the
stubwith the given arguments. If the stub was never called with a function argument,yieldthrows an error. Also aliased asinvokeCallback.
“如果从未使用函数参数调用存根”是什么意思？
这意味着如果调用了存根，但给定参数中没有函数，则会抛出异常。
考虑这个存根：
sinon.stub(fs, 'readFile');
现在测试运行这些行：
fs.readFile('some-file'); // no callback passed
fs.readFile.yield(); // throws, because the stub was never invoked with a function