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`class WithOptions`

Represents a constraint on method keyword options.

Definitions

`def initialize(options)`

Initialize a new WithOptions constraint.

Signature

parameter　options　Array(Symbol): The option names that should be present.

Implementation

def initialize(options)
	@options = options
end

`def print(output)`

Print a representation of this constraint.

Signature

parameter　output　Output: The output target.

Implementation

def print(output)
	output.write("with options ")
	output.variable(@options)
end

`def call(assertions, subject)`

Evaluate this constraint against method parameters.

Signature

parameter　assertions　Assertions: The assertions instance to use.
parameter　subject　Array: The method parameters to check.

Implementation

def call(assertions, subject)
	options = {}
	@options.each{|name| options[name] = nil}
	
	subject.each do |type, name|
		options[name] = type					
	end
	
	assertions.nested(self) do |assertions|
		options.each do |name, type|
			assertions.assert(type != nil, "option #{name}: is required")
		end
	end
end