require File.expand_path('../../spec_helper', __FILE__)
require File.expand_path('../fixtures/super', __FILE__)
describe "The super keyword" do
it "calls the method on the calling class" do
Super::S1::A.new.foo([]).should == ["A#foo","A#bar"]
Super::S1::A.new.bar([]).should == ["A#bar"]
Super::S1::B.new.foo([]).should == ["B#foo","A#foo","B#bar","A#bar"]
Super::S1::B.new.bar([]).should == ["B#bar","A#bar"]
end
it "searches the full inheritence chain" do
Super::S2::B.new.foo([]).should == ["B#foo","A#baz"]
Super::S2::B.new.baz([]).should == ["A#baz"]
Super::S2::C.new.foo([]).should == ["B#foo","C#baz","A#baz"]
Super::S2::C.new.baz([]).should == ["C#baz","A#baz"]
end
it "searches class methods" do
Super::S3::A.new.foo([]).should == ["A#foo"]
Super::S3::A.foo([]).should == ["A.foo"]
Super::S3::A.bar([]).should == ["A.bar","A.foo"]
Super::S3::B.new.foo([]).should == ["A#foo"]
Super::S3::B.foo([]).should == ["B.foo","A.foo"]
Super::S3::B.bar([]).should == ["B.bar","A.bar","B.foo","A.foo"]
end
it "calls the method on the calling class including modules" do
Super::MS1::A.new.foo([]).should == ["ModA#foo","ModA#bar"]
Super::MS1::A.new.bar([]).should == ["ModA#bar"]
Super::MS1::B.new.foo([]).should == ["B#foo","ModA#foo","ModB#bar","ModA#bar"]
Super::MS1::B.new.bar([]).should == ["ModB#bar","ModA#bar"]
end
it "searches the full inheritence chain including modules" do
Super::MS2::B.new.foo([]).should == ["ModB#foo","A#baz"]
Super::MS2::B.new.baz([]).should == ["A#baz"]
Super::MS2::C.new.baz([]).should == ["C#baz","A#baz"]
Super::MS2::C.new.foo([]).should == ["ModB#foo","C#baz","A#baz"]
end
it "can resolve to different methods in an included module method" do
Super::MultiSuperTargets::A.new.foo.should == :BaseA
Super::MultiSuperTargets::B.new.foo.should == :BaseB
end
it "searches class methods including modules" do
Super::MS3::A.new.foo([]).should == ["A#foo"]
Super::MS3::A.foo([]).should == ["ModA#foo"]
Super::MS3::A.bar([]).should == ["ModA#bar","ModA#foo"]
Super::MS3::B.new.foo([]).should == ["A#foo"]
Super::MS3::B.foo([]).should == ["B.foo","ModA#foo"]
Super::MS3::B.bar([]).should == ["B.bar","ModA#bar","B.foo","ModA#foo"]
end
it "searches BasicObject from a module for methods defined there" do
Super::IncludesFromBasic.new.__send__(:foobar).should == 43
end
it "searches BasicObject through another module for methods defined there" do
Super::IncludesIntermediate.new.__send__(:foobar).should == 42
end
it "calls the correct method when the method visibility is modified" do
Super::MS4::A.new.example.should == 5
end
it "calls the correct method when the superclass argument list is different from the subclass" do
Super::S4::A.new.foo([]).should == ["A#foo"]
Super::S4::B.new.foo([],"test").should == ["B#foo(a,test)", "A#foo"]
end
it "raises an error error when super method does not exist" do
sup = Class.new
sub_normal = Class.new(sup) do
def foo
super()
end
end
sub_zsuper = Class.new(sup) do
def foo
super
end
end
lambda {sub_normal.new.foo}.should raise_error(NoMethodError, /super/)
lambda {sub_zsuper.new.foo}.should raise_error(NoMethodError, /super/)
end
it "uses given block even if arguments are passed explicitly" do
c1 = Class.new do
def m
yield
end
end
c2 = Class.new(c1) do
def m(v)
super()
end
end
c2.new.m(:dump) { :value }.should == :value
end
it "calls the superclass method when in a block" do
Super::S6.new.here.should == :good
end
it "calls the superclass method when initial method is defined_method'd" do
Super::S7.new.here.should == :good
end
it "can call through a define_method multiple times (caching check)" do
obj = Super::S7.new
2.times do
obj.here.should == :good
end
end
it "supers up appropriate name even if used for multiple method names" do
sup = Class.new do
def a; "a"; end
def b; "b"; end
end
sub = Class.new(sup) do
[:a, :b].each do |name|
define_method name do
super()
end
end
end
sub.new.a.should == "a"
sub.new.b.should == "b"
sub.new.a.should == "a"
end
it "raises a RuntimeError when called with implicit arguments from a method defined with define_method" do
super_class = Class.new do
def a(arg)
arg
end
end
klass = Class.new super_class do
define_method :a do |arg|
super
end
end
lambda { klass.new.a(:a_called) }.should raise_error(RuntimeError)
end
it "calls method_missing when a superclass method is not found" do
Super::MM_B.new.is_a?(Hash).should == false
end
it "respects the original module a method is aliased from" do
Super::Alias3.new.name3.should == [:alias2, :alias1]
end
it "sees the included version of a module a method is alias from" do
Super::AliasWithSuper::Trigger.foo.should == [:b, :a]
end
it "find super from a singleton class" do
obj = Super::SingletonCase::Foo.new
def obj.foobar(array)
array << :singleton
super
end
obj.foobar([]).should == [:singleton, :foo, :base]
end
it "finds super on other objects if a singleton class aliased the method" do
orig_obj = Super::SingletonAliasCase::Foo.new
orig_obj.alias_on_singleton
orig_obj.new_foobar([]).should == [:foo, :base]
Super::SingletonAliasCase::Foo.new.foobar([]).should == [:foo, :base]
end
it "passes along modified rest args when they weren't originally empty" do
Super::RestArgsWithSuper::B.new.a("bar").should == ["bar", "foo"]
end
it "passes along modified rest args when they were originally empty" do
Super::RestArgsWithSuper::B.new.a.should == ["foo"]
end
it "invokes methods from a chain of anonymous modules" do
Super::AnonymousModuleIncludedTwice.new.a([]).should == ["anon", "anon", "non-anon"]
end
it "without explicit arguments can accept a block but still pass the original arguments" do
Super::ZSuperWithBlock::B.new.a.should == 14
end
it "passes along block via reference to method expecting a reference" do
Super::ZSuperWithBlock::B.new.b.should == [14, 15]
end
it "passes along a block via reference to a method that yields" do
Super::ZSuperWithBlock::B.new.c.should == 16
end
it "without explicit arguments passes optional arguments that have a default value" do
Super::ZSuperWithOptional::B.new.m(1, 2).should == 14
end
it "without explicit arguments passes optional arguments that have a non-default value" do
Super::ZSuperWithOptional::B.new.m(1, 2, 3).should == 3
end
it "without explicit arguments passes optional arguments that have a default value but were modified" do
Super::ZSuperWithOptional::C.new.m(1, 2).should == 100
end
it "without explicit arguments passes optional arguments that have a non-default value but were modified" do
Super::ZSuperWithOptional::C.new.m(1, 2, 3).should == 100
end
it "without explicit arguments passes rest arguments" do
Super::ZSuperWithRest::B.new.m(1, 2, 3).should == [1, 2, 3]
end
it "without explicit arguments passes rest arguments including any modifications" do
Super::ZSuperWithRest::B.new.m_modified(1, 2, 3).should == [1, 14, 3]
end
it "without explicit arguments passes arguments and rest arguments" do
Super::ZSuperWithRestAndOthers::B.new.m(1, 2, 3, 4, 5).should == [3, 4, 5]
end
it "without explicit arguments passes arguments and rest arguments including any modifications" do
Super::ZSuperWithRestAndOthers::B.new.m_modified(1, 2, 3, 4, 5).should == [3, 14, 5]
end
describe 'when using keyword arguments' do
it 'passes any given keyword arguments to the parent' do
b = Super::KeywordArguments::B.new
b.foo(:number => 10).should == {:number => 10}
end
it "passes any given keyword arguments including optional and required ones to the parent" do
class Super::KeywordArguments::C
eval <<-RUBY
def foo(a:, b: 'b', **)
super
end
RUBY
end
c = Super::KeywordArguments::C.new
c.foo(a: 'a', c: 'c').should == {a: 'a', b: 'b', c: 'c'}
end
it 'does not pass any keyword arguments to the parent when none are given' do
b = Super::KeywordArguments::B.new
b.foo.should == {}
end
describe 'when using splat arguments' do
it 'passes splat arguments and keyword arguments to the parent' do
b = Super::SplatAndKeyword::B.new
b.foo('bar', baz: true).should == [['bar'], {baz: true}]
end
end
end
end