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require 'test_helper'
class BindingTest < Minitest::Spec
Binding = Representable::Binding
let(:render_nil_definition) { Representable::Definition.new(:song, :render_nil => true) }
describe "#skipable_empty_value?" do
let(:binding) { Binding.new(render_nil_definition) }
# don't skip when present.
it { _(binding.skipable_empty_value?("Disconnect, Disconnect")).must_equal false }
# don't skip when it's nil and render_nil: true
it { _(binding.skipable_empty_value?(nil)).must_equal false }
# skip when nil and :render_nil undefined.
it { _(Binding.new(Representable::Definition.new(:song)).skipable_empty_value?(nil)).must_equal true }
# don't skip when nil and :render_nil undefined.
it { _(Binding.new(Representable::Definition.new(:song)).skipable_empty_value?("Fatal Flu")).must_equal false }
end
describe "#default_for" do
let(:definition) { Representable::Definition.new(:song, :default => "Insider") }
let(:binding) { Binding.new(definition) }
# return value when value present.
it { _(binding.default_for("Black And Blue")).must_equal "Black And Blue" }
# return false when value false.
it { _(binding.default_for(false)).must_equal false }
# return default when value nil.
it { _(binding.default_for(nil)).must_equal "Insider" }
# return nil when value nil and render_nil: true.
it { _(Binding.new(render_nil_definition).default_for(nil)).must_be_nil }
# return nil when value nil and render_nil: true, even when :default is set" do
it { _(Binding.new(Representable::Definition.new(:song, :render_nil => true, :default => "The Quest")).default_for(nil)).must_be_nil }
# return nil if no :default
it { _(Binding.new(Representable::Definition.new(:song)).default_for(nil)).must_be_nil }
end
end
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