Validates an expectation and fails the example if it does not match.

This overload returns a value whose type is restricted to the expected type. For example:

x = 1 || 'a'
typeof(x) # => Int32 | Char
x = x.should be_a(Int32)
typeof(x) # => Int32

See Spec::Expecations for available expectations.

Validates an expectation and fails the example if it does not match.

See Spec::Expecations for available expectations.

Validates an expectation and fails the example if it matches.

This overload returns a value whose type is restricted to exclude the given type in should_not be_a. For example:

x = 1 || 'a'
typeof(x) # => Int32 | Char
x = x.should_not be_a(Char)
typeof(x) # => Int32

See Spec::Expecations for available expectations.

Validates an expectation and fails the example if it matches.

This overload returns a value whose type is restricted to be not Nil. For example:

x = 1 || nil
typeof(x) # => Int32 | Nil
x = x.should_not be_nil
typeof(x) # => Int32

See Spec::Expecations for available expectations.

Validates an expectation and fails the example if it matches.

See Spec::Expecations for available expectations.