How to check if value is nan in unittest?
I came up with assertTrue(math.isnan(nan_value))
assert
Does CMAKE_BUILD_TYPE=Release imply -DNDEBUG?
Yes, it is set by CMake. Grepping through the CMake code reveals, that for a host of compilers it is set. Probably they set it only for these compilers, which accepts this flag. Here one of the lines concerning GCC: Modules/Compiler/GNU.cmake: set(CMAKE_${lang}_FLAGS_RELEASE_INIT “-O3 -DNDEBUG”) But be aware that many projects overwrite release/debug flags without preserving … Read more
How to guide GCC optimizations based on assertions without runtime cost?
Is there a way to express that the condition in the contract has no side effect, so that it is always optimized out? Not likely. It’s known that you cannot take a big collection of assertions, turn them into assumptions (via __builtin_unreachable) and expect good results (e.g. Assertions Are Pessimistic, Assumptions Are Optimistic by John … Read more
How to check if method has an attribute
The issue with your code is the signature of public bool MethodHasAuthorizeAttribute(Func<int, ActionResult> function). MethodHasAuthorizeAttribute can only be used with arguments matching the signature of the delegate you specified. In this case a method returning an ActionResult with a parameter of type int. When you call this method like MethodHasAuthorizeAttribute(controller.Method3), the Compiler will do a … Read more
How does Assert.AreEqual determine equality between two generic IEnumerables?
Found it: Assert.IsTrue(expected.SequenceEqual(actual));
Is there a way of having something like jUnit Assert message argument in Mockito’s verify method?
This question is ancient, but Mockito v2.1.0+ now has a built-in feature for this. verify(mock, description(“This will print on failure”)).someMethod(“some arg”); More examples included from @Lambart’s comment below: verify(mock, times(10).description(“This will print if the method isn’t called 10 times”)).someMethod(“some arg”); verify(mock, never().description(“This will print if someMethod is ever called”)).someMethod(“some arg”); verify(mock, atLeastOnce().description(“This will print if … Read more
Why assertEquals and assertSame in junit return the same result for two instances same class?
Since you didn’t override equals in your class, assertEquals behaves the same as assertSame since the default equals implementation compare references. 150 public boolean equals(Object obj) { 151 return (this == obj); 152 } If you provide a dumb overriding of equals: class SomeClass { @Override public boolean equals(Object o) { return true; } } … Read more
Should you assert not null with the assert statement in production code? [closed]
Use Objects.requireNonNull(Object) for that. Checks that the specified object reference is not null. This method is designed primarily for doing parameter validation in methods and constructors, […] In your case that would be: public void useObject(CustomObject customObject) { object = customObject.getObject(); Objects.requireNonNull(object); // throws NPE if object is null // do stuff with object } … Read more
Unit Testing without Assertions
It’s simply a very minimal test, and should be documented as such. It only verifies that it doesn’t explode when run. The worst part about tests like this is that they present a false sense of security. Your code coverage will go up, but it’s illusory. Very bad odor.