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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Struct#initialize" do
it "is private" do
StructClasses::Car.should have_private_instance_method(:initialize)
end
it 'allows valid Ruby method names for members' do
valid_method_names = [
:method1,
:method_1,
:method_1?,
:method_1!,
:a_method
]
valid_method_names.each do |method_name|
klass = Struct.new(method_name)
instance = klass.new(:value)
instance.send(method_name).should == :value
writer_method = "#{method_name}=".to_sym
result = instance.send(writer_method, :new_value)
result.should == :new_value
instance.send(method_name).should == :new_value
end
end
it "does nothing when passed a set of fields equal to self" do
car = same_car = StructClasses::Car.new("Honda", "Accord", "1998")
car.instance_eval { initialize("Honda", "Accord", "1998") }
car.should == same_car
end
it "explicitly sets instance variables to nil when args not provided to initialize" do
car = StructClasses::Honda.new
car.make.should == nil # still nil despite override in Honda#initialize b/c of super order
end
it "can be overridden" do
StructClasses::SubclassX.new(:y).new.key.should == :value
end
ruby_version_is "3.1"..."3.2" do
it "warns about passing only keyword arguments" do
-> {
StructClasses::Ruby.new(version: "3.1", platform: "OS")
}.should complain(/warning: Passing only keyword arguments/)
end
end
ruby_version_is "3.2" do
it "can be initialized with keyword arguments" do
positional_args = StructClasses::Ruby.new("3.2", "OS")
keyword_args = StructClasses::Ruby.new(version: "3.2", platform: "OS")
positional_args.version.should == keyword_args.version
positional_args.platform.should == keyword_args.platform
end
end
end
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