Verify that the value is not in the container.
UnitTestException on failure
5.shouldNotBeIn([4: "foo"]); struct AA { int onlyKey; bool opBinaryRight(string op)(in int key) const { return key == onlyKey; } } 5.shouldNotBeIn(AA(4)); assertFail(5.shouldNotBeIn(AA(5)));
See Implementation
Verify that the value is not in the container.