Failed to execute 'send' on 'XMLHttpRequest': Failed to load ng:///DynamicTestModule - Solved (Angular testing)

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If when you run your tests you see an error similar to this

Failed to execute 'send' on 'XMLHttpRequest': Failed to load 'ng:///DynamicTestModule/xxxxxxComponent_Host.ngfactory.js

It means something in your component is throwing an exception and the test framework is returning a wrapped exception. To see the actual exception run ng test with -sm=false as a parameter

ng test -sm=false
This will not only stop your browser from freezing on that test, but will also give you the original error including line number.

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