require File.dirname(__FILE__) + "/../spec_helper"

java_import "java_integration.fixtures.SingleMethodInterface"
java_import "java_integration.fixtures.UsesSingleMethodInterface"
java_import "java_integration.fixtures.DescendantOfSingleMethodInterface"
java_import "java_integration.fixtures.UsesDescendantOfSingleMethodInterface"
java_import "java_integration.fixtures.BeanLikeInterface"
java_import "java_integration.fixtures.BeanLikeInterfaceHandler"
java_import "java_integration.fixtures.ConstantHoldingInterface"
java_import "java_integration.fixtures.CoerceToInterface"
java_import "java_integration.fixtures.ReturnsInterface"
java_import "java_integration.fixtures.ReturnsInterfaceConsumer"
java_import "java_integration.fixtures.AnotherRunnable"
java_import "java_integration.fixtures.BooleanReturningInterface"
java_import "java_integration.fixtures.BooleanReturningInterfaceConsumer"
java_import "java.lang.Runnable"

describe "Single-method Java interfaces implemented in Ruby" do
  before :all do
    @value_holder1 = Class.new do
      include SingleMethodInterface
      def initialize(val)
        @value = val
      end
      def callIt
        @value
      end
    end

    @value_holder2 = Class.new do
      include SingleMethodInterface
      def initialize(val)
        @value = val
      end
      def call_it
        @value
      end
    end
  end

  it "should be kind_of? the interface" do
    @value_holder1.new(1).should be_kind_of(SingleMethodInterface)
    SingleMethodInterface.should === @value_holder1.new(1)
  end

  it "should be implemented with 'include InterfaceClass'" do
    UsesSingleMethodInterface.callIt(@value_holder1.new(1)).should == 1
    UsesSingleMethodInterface.callIt(@value_holder2.new(1)).should == 1
  end

  it "should be cast-able to the interface on the Java side" do
    UsesSingleMethodInterface.castAndCallIt(@value_holder1.new(2)).should == 2
    UsesSingleMethodInterface.castAndCallIt(@value_holder2.new(2)).should == 2
  end

  it "should allow implementation using the underscored version" do
    UsesSingleMethodInterface.callIt(@value_holder2.new(3)).should == 3
  end

  it "should allow reopening implementations" do
    @value_holder3 = Class.new do
      include SingleMethodInterface
      def initialize(val)
        @value = val
      end
      def callIt
        @value
      end
    end
    obj = @value_holder3.new(4);
    UsesSingleMethodInterface.callIt(obj).should == 4
    @value_holder3.class_eval do
      def callIt
        @value + @value
      end
    end
    UsesSingleMethodInterface.callIt(obj).should == 8

    @value_holder3 = Class.new do
      include SingleMethodInterface
      def initialize(val)
        @value = val
      end
      def call_it
        @value
      end
    end
    obj = @value_holder3.new(4);
    UsesSingleMethodInterface.callIt(obj).should == 4
    @value_holder3.class_eval do
      def call_it
        @value + @value
      end
    end
    UsesSingleMethodInterface.callIt(obj).should == 8
  end

  it "should use Object#equals if there is no Ruby equals defined" do
    c = Class.new
    c.send :include, java.util.Map
    arr = java.util.ArrayList.new
    v = c.new
    arr.add(v)
    arr.contains(v).should be_true
  end

  it "should use Object#hashCode if there is no Ruby hashCode defined" do
    c = Class.new
    c.send :include, java.util.Map
    UsesSingleMethodInterface.hashCode(c.new)
  end

  it "should use Object#toString if there is no Ruby toString defined" do
    c = Class.new
    c.send :include, java.util.Map
    UsesSingleMethodInterface.toString(c.new)
  end

  it "should allow including the same interface twice" do
    c = Class.new do
      include SingleMethodInterface
      include SingleMethodInterface

      def initialize(val)
        @value = val
      end
      def callIt
        @value
      end
    end
    UsesSingleMethodInterface.callIt(c.new(1)).should == 1
  end
end

describe "Single-method Java interfaces" do
  it "can be coerced from a block passed to a constructor" do
    UsesSingleMethodInterface.new { 1 }.result.should == 1
    UsesSingleMethodInterface.new(nil) { 1 }.result.should == 1
    UsesSingleMethodInterface.new(nil, nil) { 1 }.result.should == 1
    UsesSingleMethodInterface.new(nil, nil, nil) { 1 }.result.should == 1
    # 3 normal args is our cutoff for specific-arity optz, so test four
    UsesSingleMethodInterface.new(nil, nil, nil, nil) { 1 }.result.should == 1
  end

  it "can be coerced from a block passed to a static method" do
    UsesSingleMethodInterface.callIt { 1 }.should == 1
    UsesSingleMethodInterface.callIt(nil) { 1 }.should == 1
    UsesSingleMethodInterface.callIt(nil, nil) { 1 }.should == 1
    UsesSingleMethodInterface.callIt(nil, nil, nil) { 1 }.should == 1
    # 3 normal args is our cutoff for specific-arity optz, so test four
    UsesSingleMethodInterface.callIt(nil, nil, nil, nil) { 1 }.should == 1
  end

  it "can be coerced from a block passed to a instance method" do
    UsesSingleMethodInterface.new.callIt2 do 1 end.should == 1
    UsesSingleMethodInterface.new.callIt2(nil) do 1 end.should == 1
    UsesSingleMethodInterface.new.callIt2(nil, nil) do 1 end.should == 1
    UsesSingleMethodInterface.new.callIt2(nil, nil, nil) do 1 end.should == 1
    # 3 normal args is our cutoff for specific-arity optz, so test four
    UsesSingleMethodInterface.new.callIt2(nil, nil, nil, nil) do 1 end.should == 1
  end

  it "should be implementable with .impl" do
    impl = SingleMethodInterface.impl {|name| name}
    impl.should be_kind_of(SingleMethodInterface)
    SingleMethodInterface.should === impl

    UsesSingleMethodInterface.callIt(impl).should == :callIt
  end

  it "should allow assignable equivalents to be passed to a method" do
    impl = DescendantOfSingleMethodInterface.impl {|name| name}
    impl.should be_kind_of(SingleMethodInterface)
    DescendantOfSingleMethodInterface.should === impl
    UsesSingleMethodInterface.callIt(impl).should == :callIt
    UsesSingleMethodInterface.new.callIt2(impl).should == :callIt
  end

  it "should maintain Ruby object equality when passed through Java and back" do
    result = SingleMethodInterface.impl {|name| name}
    callable = mock "callable"
    callable.should_receive(:call).and_return result
    UsesSingleMethodInterface.new.callIt3(callable).should == result
  end

  it "coerces to that interface after duck-typed implementation has happened" do
    callable = mock "SingleMethodInterfaceImpl"
    callable.should_receive(:callIt).and_return :callIt
    UsesSingleMethodInterface.callIt(callable).should == :callIt

    # receives Object, but should return the coerced impl
    cls = UsesSingleMethodInterface.getClass(callable)

    # pull out interfaces from the resulting class
    interfaces = []
    while cls
      interfaces.concat(cls.interfaces)
      cls = cls.superclass
    end
    
    interfaces.should include(SingleMethodInterface.java_class)
  end
end

describe "A bean-like Java interface" do
  it "allows implementation with attr* methods" do
    myimpl1 = Class.new do
      include BeanLikeInterface
      attr_accessor :value, :my_value, :foo, :my_foo
    end
    myimpl2 = Class.new do
      include BeanLikeInterface
      attr_accessor :value, :myValue, :foo, :myFoo
    end
    [myimpl1, myimpl2].each do |impl|
      bli = impl.new
      blih = BeanLikeInterfaceHandler.new(bli)
      lambda do
        blih.setValue(1)
        blih.setMyValue(2)
        blih.setFoo(true)
        blih.setMyFoo(true)
        blih.getValue().should == 1
        blih.getMyValue().should == 2
        blih.isFoo().should == true
        blih.isMyFoo().should == true
      end.should_not raise_error
    end
  end

  it "allows implementing boolean methods with ? names" do
    # Java name before Ruby name (un-beaned)
    myimpl1 = Class.new do
      include BeanLikeInterface
      def isMyFoo; true; end
      def is_my_foo; false; end
    end
    BeanLikeInterfaceHandler.new(myimpl1.new).isMyFoo().should == true
    # Ruby name before beaned Java name
    myimpl2 = Class.new do
      include BeanLikeInterface
      def is_my_foo; true; end
      def myFoo; false; end
    end
    BeanLikeInterfaceHandler.new(myimpl2.new).isMyFoo().should == true
    # Beaned Java name before beaned Ruby name
    myimpl3 = Class.new do
      include BeanLikeInterface
      def myFoo; true; end
      def my_foo; false; end
    end
    BeanLikeInterfaceHandler.new(myimpl3.new).isMyFoo().should == true
    # Beaned Ruby name before q-marked beaned Java name
    myimpl4 = Class.new do
      include BeanLikeInterface
      def my_foo; true; end
      def myFoo?; false; end
    end
    BeanLikeInterfaceHandler.new(myimpl4.new).isMyFoo().should == true
    # Q-marked beaned Java name before Q-marked beaned Ruby name
    myimpl5 = Class.new do
      include BeanLikeInterface
      def myFoo?; true; end
      def my_foo?; false; end
    end
    BeanLikeInterfaceHandler.new(myimpl5.new).isMyFoo().should == true
    # Confirm q-marked beaned Ruby name works
    myimpl6 = Class.new do
      include BeanLikeInterface
      def my_foo?; true; end
    end
    BeanLikeInterfaceHandler.new(myimpl6.new).isMyFoo().should == true

    # Java name before Ruby name
    myimpl1 = Class.new do
      include BeanLikeInterface
      def supahFriendly; true; end
      def supah_friendly; false; end
    end
    BeanLikeInterfaceHandler.new(myimpl1.new).supahFriendly().should == true
    # Ruby name before q-marked Java name
    myimpl2 = Class.new do
      include BeanLikeInterface
      def supah_friendly; true; end
      def supahFriendly?; false; end
    end
    BeanLikeInterfaceHandler.new(myimpl2.new).supahFriendly().should == true
    # Q-marked Java name before Q-marked Ruby name
    myimpl3 = Class.new do
      include BeanLikeInterface
      def supahFriendly?; true; end
      def supah_friendly?; false; end
    end
    BeanLikeInterfaceHandler.new(myimpl3.new).supahFriendly().should == true
    # confirm Q-marked Ruby name works
    myimpl4 = Class.new do
      include BeanLikeInterface
      def supah_friendly?; true; end
    end
    BeanLikeInterfaceHandler.new(myimpl4.new).supahFriendly().should == true
  end

  it "searches for implementation names in a predictable order" do
    myimpl1 = Class.new do
      include BeanLikeInterface
      def foo?
        true
      end
      def my_foo?
        true
      end
      def friendly?
        true
      end
      def supah_friendly?
        true
      end
    end
    myimpl2 = Class.new do
      include BeanLikeInterface
      def foo?
        true
      end
      def myFoo?
        true
      end
      def friendly?
        true
      end
      def supahFriendly?
        true
      end
    end
    [myimpl1, myimpl2].each do |impl|
      bli = impl.new
      blih = BeanLikeInterfaceHandler.new(bli)
      lambda do
        blih.isFoo().should == true
        blih.isMyFoo().should == true
        blih.friendly().should == true
        blih.supahFriendly().should == true
      end.should_not raise_error
    end
  end

  it "does not honor beanified implementations of methods that don't match javabean spec" do
    myimpl1 = Class.new do
      include BeanLikeInterface
      def something_foo(x)
        x
      end
      def something_foo=(x,y)
        y
      end
    end
    myimpl2 = Class.new do
      include BeanLikeInterface
      def somethingFoo(x)
        x
      end
      def somethingFoo=(x,y)
        y
      end
    end
    [myimpl1, myimpl2].each do |impl|
      bli = impl.new
      blih = BeanLikeInterfaceHandler.new(bli)
      lambda { blih.getSomethingFoo(1) }.should raise_error(NameError)
      lambda { blih.setSomethingFoo(1,2) }.should raise_error(NameError)
    end
  end
end

describe "A Ruby class including a descendant interface" do
  it "implements all methods from that interface and parents" do
    impl = Class.new do
      include DescendantOfSingleMethodInterface

      def callIt; "foo"; end
      def callThat; "bar"; end
    end

    dosmi = impl.new

    UsesSingleMethodInterface.callIt(dosmi).should == "foo"
    UsesDescendantOfSingleMethodInterface.callThat(dosmi).should == "bar"
  end

  it "inherits implementation of super-interface methods from superclass" do
    super_impl = Class.new do
      include SingleMethodInterface

      def callIt; "foo"; end
    end

    impl = Class.new(super_impl) do
      include DescendantOfSingleMethodInterface
      def callThat; "bar"; end
    end

    dosmi = impl.new

    UsesSingleMethodInterface.callIt(dosmi).should == "foo"
    UsesDescendantOfSingleMethodInterface.callThat(dosmi).should == "bar"
  end
end

describe "Single object implementing methods of interface" do
  before(:each) do
    @impl = Class.new do
      include SingleMethodInterface
    end
  end

  it "should not be possible to call methods on instances of class from Java" do
    proc do
      SingleMethodInterface::Caller.call(@impl.new)
    end.should raise_error(NoMethodError)
  end

  it "should be possible to call methods on specific object that implements a method" do
    obj = @impl.new
    def obj.callIt
      "foo"
    end
    SingleMethodInterface::Caller.call(obj).should == "foo"
  end
end

describe "Calling include to include a Java interface into a Ruby class" do
  it "should implement all interfaces specified into it" do
    m = Module.new do
      include SingleMethodInterface
      include BeanLikeInterface
    end

    c = Class.new do
      include m
      def call_it; "bar"; end
      def value; 1; end
    end

    obj = c.new
    blih = BeanLikeInterfaceHandler.new(obj)

    SingleMethodInterface::Caller.call(obj).should == "bar"
    blih.value.should == 1
  end

  it "should incorporate constants from the interface into the class's metaclass" do
    c = Class.new do
      include ConstantHoldingInterface
    end

    c::MY_INT.should == 1
    c::MY_STRING.should == "foo"
  end
end

describe "A ruby module used as a carrier for Java interfaces" do
  it "allows multiple interfaces" do
    m = Module.new do
      include SingleMethodInterface
      include BeanLikeInterface

      def self.java_interfaces; @java_interface_mods; end
    end
    m.java_interfaces.should include(SingleMethodInterface)
    m.java_interfaces.should include(BeanLikeInterface)
  end

  it "calls append_features on each interface" do
    my_smi = SingleMethodInterface.dup
    my_bli = BeanLikeInterface.dup
    [my_smi, my_bli].each do |my|
      class << my
        alias :old_af :append_features
        def append_features(cls)
          if @append_features_called
            @append_features_called += 1
          else
            @append_features_called = 1
          end
          old_af(cls)
        end
        def called; @append_features_called; end
      end
    end

    m = Module.new do
      include my_smi
      include my_bli
    end

    my_smi.called.should == 1
    my_bli.called.should == 1

    c = Class.new do
      include m
    end

    my_smi.called.should == 2
    my_bli.called.should == 2
  end

  it "causes an including class to implement all interfaces" do
    m = Module.new do
      include SingleMethodInterface
      include BeanLikeInterface
    end

    c = Class.new do
      include m
      def call_it; "bar"; end
      def value; 1; end
    end

    obj = c.new
    blih = BeanLikeInterfaceHandler.new(obj)

    SingleMethodInterface::Caller.call(obj).should == "bar"
    blih.value.should == 1
  end
end

describe "Coercion of normal ruby objects" do
  it "should allow an object passed to a java method to be coerced to the interface" do
    ri = mock "returns interface"
    consumer = ReturnsInterfaceConsumer.new
    consumer.set_returns_interface ri
    ri.should be_kind_of(ReturnsInterface)
  end


  it "should return the original ruby object when returned back to Ruby" do
    obj = mock "ruby object"
    cti = CoerceToInterface.new
    result = cti.returnArgumentBackToRuby(JRuby.runtime, obj)
    obj.should be_kind_of(Java::JavaLang::Runnable)
    result.should == obj
    obj.should == result
  end

  it "should return the original ruby object when converted back to Ruby" do
    obj = mock "ruby object"
    cti = CoerceToInterface.new
    result = cti.coerceArgumentBackToRuby(JRuby.runtime, obj)
    obj.should be_kind_of(Java::JavaLang::Runnable)
    result.should == obj
  end

  it "should pass the original ruby object when converted back to Ruby and used as an argument to another Ruby object" do
    obj = mock "ruby object"
    callable = mock "callable"
    callable.should_receive(:call).with(obj)
    cti = CoerceToInterface.new
    cti.passArgumentToInvokableRubyObject(callable, obj)
    obj.should be_kind_of(Java::JavaLang::Runnable)
  end

  it "should allow an object passed to a java constructor to be coerced to the interface" do
    ri = mock "returns interface"
    ReturnsInterfaceConsumer.new(ri)
    ri.should be_kind_of(ReturnsInterface)
  end

  it "should allow an object to be coerced as a return type of a java method" do
    ri = mock "returns interface"
    value = mock "return value runnable"
    ri.stub!(:getRunnable).and_return value

    consumer = ReturnsInterfaceConsumer.new(ri)
    runnable = consumer.getRunnable
    runnable.should == value
    value.should be_kind_of(Java::JavaLang::Runnable)
  end
end

describe "A child extending a Ruby class that includes Java interfaces" do
  it "should implement all those interfaces" do
    sup = Class.new { include BeanLikeInterface }
    child = Class.new(sup) { def value; 1; end }

    obj = child.new
    blih = BeanLikeInterfaceHandler.new(obj)

    blih.value.should == 1
  end
end

describe "Calling methods through interface on Ruby objects with methods defined on singleton class" do
  before(:each) do
    @klass = Class.new do
      include SingleMethodInterface
    end

    @obj1 = @klass.new
    @obj2 = @klass.new
  end

  it "should handle one object using instance_eval" do
    @obj1.instance_eval("def callIt; return :ok; end;")

    UsesSingleMethodInterface.callIt(@obj1).should == :ok
  end

  it "should handle one object extending module" do
    @module = Module.new { def callIt; return :ok; end; }
    @obj1.extend(@module)

    UsesSingleMethodInterface.callIt(@obj1).should == :ok
  end

  it "should handle two object with combo of instance_eval and module extension" do
    @obj1.instance_eval("def callIt; return :one; end;")
    @module = Module.new { def callIt; return :two; end; }
    @obj2.extend(@module)

    UsesSingleMethodInterface.callIt(@obj1).should == :one
    UsesSingleMethodInterface.callIt(@obj2).should == :two
  end

  it "should handle two object with combo of instance_eval and module extension in opposite order" do
    @obj1.instance_eval("def callIt; return :one; end;")
    @module = Module.new { def callIt; return :two; end; }
    @obj2.extend(@module)

    UsesSingleMethodInterface.callIt(@obj2).should == :two
    UsesSingleMethodInterface.callIt(@obj1).should == :one
  end
end

# JRUBY-2999
describe "A Ruby class implementing Java interfaces with overlapping methods" do
  it "should implement without error" do
    cls = Class.new do
      include AnotherRunnable
      include Runnable
      attr_accessor :foo
      def run
        @foo = 'success'
      end
    end

    obj = nil
    lambda {obj = cls.new}.should_not raise_error
  end
end

# JRUBY-3166
describe "A Ruby class implementing a Java interface with method returning Boolean" do
  it "should correctly box returned value" do
    cls = Class.new do
      include BooleanReturningInterface
      def bar
        true
      end
    end

    obj = cls.new
    BooleanReturningInterfaceConsumer.new.consume(obj).should be_true
  end
end

describe "A Ruby class implementing an interface" do
  describe "that extends a Ruby class implementing an interface" do
    it "can initialize successfully" do
      c1 = Class.new do
        include java.lang.Runnable
      end
      lambda {c1.new}.should_not raise_error
      c2 = Class.new(c1) do
        include java.io.Serializable
      end
      lambda {c2.new}.should_not raise_error
    end
  end
end
