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require File.dirname(__FILE__) + "/../spec_helper"
require 'jruby/core_ext'
describe "JRuby class reification" do
jclass = java.lang.Class
class RubyRunnable
include java.lang.Runnable
def run
end
end
it "should add the included Java interfaces to the reified class" do
RubyRunnable.module_eval do
add_method_signature("run", [java.lang.Void::TYPE])
end
java_class = RubyRunnable.become_java!
java_class.interfaces.should include(java.lang.Runnable.java_class)
end
it "uses the nesting of the class for its package name" do
class ReifyInterfacesClass1
class ReifyInterfacesClass2
end
end
ReifyInterfacesClass1.become_java!
ReifyInterfacesClass1::ReifyInterfacesClass2.become_java!
ReifyInterfacesClass1.to_java(jclass).name.should == "rubyobj.ReifyInterfacesClass1"
ReifyInterfacesClass1::ReifyInterfacesClass2.to_java(jclass).name.should == "rubyobj.ReifyInterfacesClass1.ReifyInterfacesClass2"
# checking that the packages are valid for Java's purposes
lambda do
ReifyInterfacesClass1.new
ReifyInterfacesClass1::ReifyInterfacesClass2.new
end.should_not raise_error
end
it "creates static methods for Ruby class methods" do
cls = Class.new do
class << self
def blah
end
end
end
java_class = cls.become_java!
method = java_class.declared_methods.select {|m| m.name == "blah"}[0]
method.name.should == "blah"
method.return_type.should == org.jruby.runtime.builtin.IRubyObject.java_class
method.parameter_types.length.should == 0
end
it "supports fully reifying a deep class hierarchy" do
class BottomOfTheStack ; end
class MiddleOfTheStack < BottomOfTheStack ; end
class TopLeftOfTheStack < MiddleOfTheStack ; end
class TopRightOfTheStack < MiddleOfTheStack ; end
java_class = TopLeftOfTheStack.become_java!
java_class.should_not be_nil
java_class = TopRightOfTheStack.become_java!
java_class.should_not be_nil
end
it "supports reification of annotations and signatures on static methods without parameters" do
cls = Class.new do
class << self
def blah_no_args()
end
add_method_signature( "blah_no_args", [java.lang.Integer] )
add_method_annotation( "blah_no_args", java.lang.Deprecated => {} )
end
end
java_class = cls.become_java!()
method = java_class.declared_methods.select {|m| m.name == "blah_no_args"}[0]
method.should_not be_nil
method.return_type.should == java.lang.Integer.java_class
anno = method.get_annotation( java.lang.Deprecated.java_class )
anno.should_not be_nil
end
it "supports reification of annotations and signatures on static methods with parameters" do
cls = Class.new do
class << self
def blah_with_args(arg_one,arg_two)
end
add_method_signature( "blah_with_args", [java.lang.Integer, java.lang.String, java.lang.Float] )
add_method_annotation( "blah_with_args", java.lang.Deprecated => {} )
end
end
java_class = cls.become_java!()
method = java_class.declared_methods.select {|m| m.name == "blah_with_args"}[0]
method.should_not be_nil
method.return_type.should == java.lang.Integer.java_class
anno = method.get_annotation( java.lang.Deprecated.java_class )
anno.should_not be_nil
end
it "allows loading reified classes into the main JRubyClassLoader" do
class JRUBY5564; end
a_class = JRUBY5564.become_java!(false)
# load the java class from the classloader
cl = java.lang.Thread.current_thread.getContextClassLoader
cl.load_class(a_class.get_name).should == a_class
end
describe "java fields" do
let(:cls) {
Class.new(&fields)
}
let(:fields) { proc {
java_field "java.lang.String foo"
} }
subject { cls.become_java! }
it "adds specified fields to java_class" do
subject.get_declared_fields.map { |f| f.get_name }.should == %w(ruby rubyClass foo)
end
it "lets you write to the fields" do
subject
cls.new.should respond_to :foo
cls.new.should respond_to :foo=
field = subject.get_declared_fields.to_a.detect { |f| f.get_name == "foo" }
instance = cls.new
instance.foo = "String Value"
instance.foo.should == "String Value"
field.get(instance).should == "String Value"
end
context "many fields" do
let(:fields) { proc {
java_field "java.lang.String foo"
java_field "java.lang.String bar"
java_field "java.lang.String baz"
java_field "java.lang.String zot"
java_field "java.lang.String allegro"
}}
it "keeps the ordering as specified" do
subject.get_declared_fields.map { |f| f.get_name }.should == %w(ruby rubyClass foo bar baz zot allegro)
end
end
end
end
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