Class: Sus::Have::Value

Inherits:
Object
  • Object
show all
Defined in:
lib/sus/have.rb

Overview

Represents a predicate that checks if a collection has a value matching a predicate.

Instance Method Summary collapse

Constructor Details

#initialize(predicate) ⇒ Value

Initialize a new Value predicate.



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# File 'lib/sus/have.rb', line 78

def initialize(predicate)
	@predicate = predicate
end

Instance Method Details

#call(assertions, subject) ⇒ Object

Evaluate this predicate against a subject.



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# File 'lib/sus/have.rb', line 91

def call(assertions, subject)
	index = 0
	
	subject.each do |value|
		# Capture the label (index and value) as a buffer of formatting
		# instructions, so the value is truncated/styled consistently:
		label = Output::Buffered.new
		label.write("[#{index}] = ")
		label.variable(value)
		
		assertions.nested(label, distinct: true) do |assertions|
			@predicate&.call(assertions, value)
		end
		
		index += 1
	end
end

#print(output) ⇒ Object

Print a representation of this predicate.



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# File 'lib/sus/have.rb', line 84

def print(output)
	output.write("value ", @predicate, :reset)
end