c# - Is there a more appropriate to test if the constructor throws an exception? -


normally test, if exception gets thrown in method, follows. use fluentassertions:

[fact] public void exception_gets_thrown() {     // arrange     var foo = new foo("validargument");      // act/assert     foo.invoking(f => f.bar(null))            // null invalid argument        .shouldthrow<argumentnullexception>(); }

but how test, if exception gets thrown in constructor? did this, there maybe more appropriate way via fluentassertions?

[fact] public void constructor_throws_exception() {     // arrange     action = () => new foo(null);         // null invalid argument      // act/assert     a.shouldthrow<argumentnullexception>(); }

that's how you're supposed test exceptions , that's shouldthrow<t>() , shouldnotthrow<t>() designed in first place. in fact, invoking() approach might marked obsolete in next big version (2.0.0).


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