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Contents
# frozen_string_literal: true
module Matchers
module Type
def have_nullable(attribute, valid_value, invalid_value, default_value)
HaveNullableMatcher.new(attribute, valid_value, invalid_value, default_value)
end
class HaveNullableMatcher
def initialize(attribute, valid_value, invalid_value, default_value)
@attribute = attribute
@valid_value = valid_value
@invalid_value = invalid_value
@default_value = default_value
@failure_description = ''
end
def matches?(klass)
@klass = klass
accepts_nil? && accepts_valid_value? && defaults_invalid_value?
end
def description
"have nullable attribute #{@attribute.inspect}"
end
def failure_message
"Expected class to have nullable attribute #{@attribute.inspect}" << @failure_description
end
private
def accepts_nil?
@klass.new(@attribute => nil)
end
def accepts_valid_value?
model = @klass.new(@attribute => @valid_value)
model.send(@attribute) == @valid_value
end
def defaults_invalid_value?
model = @klass.new(@attribute => @invalid_value)
value = model.send(@attribute)
return true if value == @default_value
@failure_description << " (Expected #{@invalid_value.inspect} to default to "\
"#{@default_value.inspect}), but got #{value.inspect}"
false
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems