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663 lines (559 loc) · 23.9 KB
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require File.dirname(__FILE__) + "/../spec_helper"
require 'jruby/core_ext'
java_import 'java_integration.fixtures.Reflector'
describe "JRuby class reification" do
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!
interfaces = java_class.interfaces
expect( interfaces ).to include(java.lang.Runnable.java_class)
end
it "uses the nesting of the class for its package name" do
class ReifyInterfacesClass1
module Nested
class InnerClass
end
end
end
ReifyInterfacesClass1.become_java!
ReifyInterfacesClass1::Nested::InnerClass.become_java!
jclass = java.lang.Class
outer_java_class_name = ReifyInterfacesClass1.to_java(jclass).name
expect(outer_java_class_name).to eql('rubyobj.ReifyInterfacesClass1')
expect(ReifyInterfacesClass1::Nested::InnerClass.to_java(jclass).name).to eql('rubyobj.ReifyInterfacesClass1.Nested.InnerClass')
# checking that the packages are valid for Java's purposes
expect do
ReifyInterfacesClass1.new
ReifyInterfacesClass1::Nested::InnerClass.new
end.not_to raise_error
end
it "creates static methods for reified Ruby class methods" do
klass = Class.new do
class << self
def foo; 'FOO' end
end
def self.bar(arg = 'baz'); "BAR-#{arg.upcase rescue arg.inspect}" end
end
java_class = klass.become_java!
method = java_class.declared_methods.find { |m| m.name == 'foo' }
expect(method.return_type).to eql org.jruby.runtime.builtin.IRubyObject.java_class
expect(method.parameter_types.length).to eql 0 # foo()
expect( Reflector.invoke(nil, method) ).to eql 'FOO'
method = java_class.declared_methods.find { |m| m.name == 'bar' }
expect( method.return_type ).to eql org.jruby.runtime.builtin.IRubyObject.java_class
expect( method.parameter_types.length ).to eql 1 # bar(org.jruby.runtime.builtin.IRubyObject[])
expect( method.parameter_types[0] ).to eql org.jruby.runtime.builtin.IRubyObject[].java_class
expect( method.isVarArgs ).to be true
expect( Reflector.invoke(nil, method) ).to eql 'BAR-BAZ'
# This expectation is disabled because it causes an argument array to be passed with a single null element. This
# appears to work properly in the interpreter by replacing the null with nil, but after JIT optimizations have run
# the null propagates on its own eventually causing NPE. I am unsure if this case should ever have passed, since
# Ruby methods are not equipped to handle IRubyObject[] argument arrays with null elements.
#
# See jruby/jruby#7914 for more information.
# args = org.jruby.runtime.builtin.IRubyObject[1].new
# expect( Reflector.invoke(nil, method, args) ).to eql 'BAR-nil'
args = org.jruby.runtime.builtin.IRubyObject[1].new; args[0] = 'zZz'.to_java(org.jruby.runtime.builtin.IRubyObject)
expect( Reflector.invoke(nil, method, args) ).to eql 'BAR-ZZZ'
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!
expect(java_class).not_to be_nil
expect(java_class).to eq(TopLeftOfTheStack.java_class)
java_class = TopRightOfTheStack.become_java!
expect(java_class).not_to be_nil
java_class = TopRightOfTheStack.to_java.getReifiedRubyClass
expect(java_class).not_to be_nil
end
it "supports fully reifying a deep class hierarchy from java parents" do
class BottomOfTheJStack < java.util.ArrayList ; end
class MiddleOfTheJStack < BottomOfTheJStack ; end
class TopLeftOfTheJStack < MiddleOfTheJStack ; end
class TopRightOfTheJStack < MiddleOfTheJStack ;def size; super + 3; end ; end
java_class = TopLeftOfTheJStack.become_java!
expect(java_class).not_to be_nil
java_class = TopRightOfTheJStack.become_java!
expect(java_class).not_to be_nil
java_class = TopRightOfTheJStack.to_java.getReifiedJavaClass
expect(java_class).not_to be_nil
expect(TopRightOfTheJStack.new).not_to be_nil
expect(TopLeftOfTheJStack.new.size).to eq 0
expect(TopRightOfTheJStack.new([:a, :b]).size).to eq (2+3)
end
it "calls prepended and leaf initialize methods for Ruby classes rooted in a Java superclass" do
class PrependJavaBaseInitC < java.util.ArrayList
def initialize(trace)
trace << :c
super()
end
end
class PrependJavaBaseInitD < PrependJavaBaseInitC
def initialize(trace)
trace << :d
super
end
end
class PrependJavaBaseInitE < PrependJavaBaseInitD
def initialize(trace)
trace << :e
super
end
end
module PrependJavaBaseInitM
def initialize(trace)
trace << :m
super
end
end
PrependJavaBaseInitE.prepend(PrependJavaBaseInitM)
trace = []
PrependJavaBaseInitE.new(trace)
expect(trace).to eq([:m, :e, :d, :c])
end
it "supports auto reifying a class hierarchy when class gets redefined" do
class ASubList < java.util.ArrayList
attr_reader :args
def initialize(arg1, arg2)
@args = [arg1, arg2]
super(arg1 + arg2)
end
end
class ASubSubList < ASubList; end
expect( ASubSubList.new(1, 2).args ).to eql [1, 2]
Object.send(:remove_const, :ASubSubList)
class ASubSubList < ASubList; end
expect( ASubSubList.new(1, 2).args ).to eql [1, 2]
old_a_sub_list_reified_class = JRuby.reference(ASubList).reified_class
Object.send(:remove_const, :ASubSubList)
Object.send(:remove_const, :ASubList)
class ASubList < java.util.ArrayList
attr_reader :args
def initialize(arg1, arg2)
@args = [arg2, arg1]
super(arg1 + arg2)
end
end
class ASubSubList < ASubList; end
expect( ASubSubList.new(1, 2).args ).to eql [2, 1]
expect(JRuby.reference(ASubList).reified_class).to_not equal(old_a_sub_list_reified_class) # new Java class generated
Object.send(:remove_const, :ASubSubList)
Object.send(:remove_const, :ASubList)
end
it "constructs in the right order using the right methods" do
class BottomOfTheCJStack < java.util.ArrayList
def initialize(lst)
lst << :bottom_start
super()
lst << :bottom_end
end
end
class MiddleLofTheCJStack < BottomOfTheCJStack
def initialize(lst)
lst << :mid1_start
super
lst << :mid1_end
end
end
class MiddleMofTheCJStack < MiddleLofTheCJStack
def initialize(lst)
lst << :mid2_error
super
lst << :mid2_end_error
end
configure_java_class ctor_name: :reconfigured
def reconfigured(lst)
lst << :mid2_good_start
super
lst << :mid2_good_end
end
end
class MiddleUofTheCJStack < MiddleMofTheCJStack
#default init
end
class TopOfTheCJStack < MiddleUofTheCJStack
def initialize(lst)
lst << :top_start
super
lst << :top_end
end
end
trace = []
expect(TopOfTheCJStack.new(trace)).not_to be_nil
expect(trace).to eql([:top_start, :mid2_good_start, :mid1_start, :bottom_start, :bottom_end, :mid1_end, :mid2_good_end, :top_end])
end
it "supports reification of java classes with interfaces" do
clz = Class.new(java.lang.Exception) do
include java.util.Iterator
def initialize(array)
@array = array
super(array.inspect)
@at = 0
@loop = false
end
def hasNext
@at < @array.length
end
def next()
@array[@array.length - 1 - @at].tap{@at+=1}
end
def remove
raise java.lang.StackOverflowError.new if @loop
@loop = true
begin
@array<< :fail1
super
@array << :fail2
rescue java.lang.UnsupportedOperationException => uo
@array = [:success]
rescue java.lang.StackOverflowError => so
@array << :failSO
end
@loop = false
end
end
gotten = []
clz.new([:a, :b, :c]).forEachRemaining { |k| gotten << k }
expect(gotten).to eql([:c,:b, :a])
expect(clz.new([:a, :b, :c]).message).to eql("[:a, :b, :c]")
pending "GH#6479 + reification not yet hooked up"
obj = clz.new(["fail3"])
obj.remove
gotten = []
obj.forEachRemaining { |k| gotten << k }
expect(gotten).to eql([:success])
expect(gotten.length).to eql(2)
end
it "supports reification of ruby classes with interfaces" do
pending "GH#6479 + reification not yet hooked up"
clz = Class.new do
include java.util.Iterator
def initialize(array)
@array = array
@at = 0
@loop = false
end
def hasNext
@at < @array.length
end
def next()
@array[@array.length - 1 - @at].tap{@at+=1}
end
def remove
raise java.lang.StackOverflowError.new if @loop
@loop = true
begin
@array<< :fail1
super
@array << :fail2
rescue java.lang.UnsupportedOperationException => uo
@array = [:success]
rescue java.lang.StackOverflowError => so
@array << :failSO
end
@loop = false
end
end
obj = clz.new(["fail3"])
obj.remove
gotten = []
obj.forEachRemaining { |k| gotten << k }
expect(gotten).to eql([:success])
expect(gotten.length).to eql(2)
end
it "supports reification of concrete classes with non-standard construction" do
clz = Class.new(java.lang.Exception) do
def jinit(str, seq)
@seq = seq
super("foo: #{str}")
seq << :jinit
end
def initialize(str, foo)
@seq << :init
@seq << str
@seq << foo
end
def self.new(seq, str)
obj = allocate
seq << :new
obj.__jallocate!(str, seq)
seq << :ready
obj
end
configure_java_class ctor_name: :jinit
end
bclz = clz.become_java!
lst = []
obj = clz.new(lst, :bar)
expect(obj).not_to be_nil
expect(lst).to eq([:new, :jinit, :ready])
expect(obj.message).to eq("foo: bar")
obj.send :initialize, :x, "y"
expect(lst).to eq([:new, :jinit, :ready, :init, :x, "y"])
expect(bclz).to eq(clz.java_class)
expect(bclz).not_to eq(java.lang.Exception.java_class)
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]
expect(method).not_to be_nil
expect(method.return_type).to eq(java.lang.Integer.java_class)
anno = method.get_annotation( java.lang.Deprecated.java_class )
expect(anno).not_to be_nil
end
it "Errors on unimplemented methods in abstract/interfaces" do
expect { Class.new do; include java.util.Iterator; end.hasNext }.to raise_error(NoMethodError)
expect { Class.new(java.lang.Exception) do; include java.util.Iterator; end.hasNext }.to raise_error(NoMethodError)
expect { Class.new(java.util.AbstractList) do; end.get(0) }.to raise_error(NoMethodError)
end
it "Errors on invalid logic jumps" do
expect { Class.new(java.util.AbstractList) do; def initialize();while true; super([]); fail_by_not_existing; end; end; end.new }.to raise_error(RuntimeError)
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]
expect(method).not_to be_nil
expect(method.return_type).to eq(java.lang.Integer.java_class)
anno = method.get_annotation( java.lang.Deprecated.java_class )
expect(anno).not_to 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
klass = java.lang.Thread.current_thread.getContextClassLoader
expect(klass.load_class(a_class.get_name)).to eq(a_class)
end
it "supports reifying concrete classes extending classes from an unrelated class loader" do
isolated_class_path = File.expand_path('../../../../test/target/test-classes-isolated', __FILE__)
classloader = java.net.URLClassLoader.new([java.net.URL.new("file://#{isolated_class_path}/")].to_java(java.net.URL))
JRuby.runtime.instance_config.add_loader(classloader)
# we can reference it from JRuby, because it was added to the JRuby loader above
class GH7327 < Java::Java_integrationFixturesIsolatedClasses::GH7327Base; end
# it should have created a unique Java class
expect(GH7327.become_java!).not_to eq(Java::Java_integrationFixturesIsolatedClasses::GH7327Base.java_class)
ensure
JRuby.runtime.instance_config.extra_loaders.clear
end
it "supports reifying concrete classes extending classes and implementing interfaces from multiple unrelated class loaders" do
isolated_class_path = File.expand_path('../../../../test/target/test-classes-isolated', __FILE__)
classloader1 = java.net.URLClassLoader.new([java.net.URL.new("file://#{isolated_class_path}/")].to_java(java.net.URL))
JRuby.runtime.instance_config.add_loader(classloader1)
isolated_interface_path = File.expand_path('../../../../test/target/test-interfaces-isolated', __FILE__)
classloader2 = java.net.URLClassLoader.new([java.net.URL.new("file://#{isolated_interface_path}/")].to_java(java.net.URL))
JRuby.runtime.instance_config.add_loader(classloader2)
# we can reference them from JRuby, because they were added to the JRuby loader above
class GH7327WithInterface < Java::Java_integrationFixturesIsolatedClasses::GH7327Base
include Java::Java_integrationFixturesIsolatedInterfaces::GH7327Interface
end
# it should have created a unique Java class
expect(GH7327WithInterface.become_java!).not_to eq(Java::Java_integrationFixturesIsolatedClasses::GH7327Base.java_class)
ensure
JRuby.runtime.instance_config.extra_loaders.clear
end
class ReifiedSample
def hello; 'Sayonara from Ruby' end
java_signature "java.lang.String ahoy()"
def ahoy; 'Ahoy There!' end
def hoja(arg); 'Hoja ' + arg.to_s end
def szia(arg1, arg2, arg3); return "Szia #{arg1} #{arg2} #{arg3}" end
def greet(*args); "Greetings #{args.inspect}!" end
java_signature "java.lang.String ola(java.lang.String[] args)"
def ola(*args); "OLA #{args.join(' ')}" end
end
it "handles argument count for reified class methods" do
j_class = ReifiedSample.become_java!; sample = ReifiedSample.new
methods = Reflector.findMethods(sample, 'hello')
expect( methods.size ).to eql 1; method = methods[0]
expect( method.isVarArgs ).to be false
expect( Reflector.invoke(sample, 'hello') ).to eql 'Sayonara from Ruby'
expect( Reflector.invoke(sample, j_class, 'hello') ).to eql 'Sayonara from Ruby'
methods = Reflector.findMethods(sample, 'ahoy')
expect( methods.size ).to eql 1; method = methods[0]
expect( method.isVarArgs ).to be false
expect( j_class.newInstance.ahoy ).to eql 'Ahoy There!'
methods = Reflector.findMethods(sample, 'hoja')
expect( methods.size ).to eql 1; method = methods[0]
expect( method.isVarArgs ).to be false
expect( j_class.newInstance.hoja('Ferko') ).to eql 'Hoja Ferko'
expect { j_class.newInstance.szia('Ferko', 'Janko') }.to raise_error(ArgumentError)
methods = Reflector.findMethods(sample, 'szia')
expect( methods.size ).to eql 1; method = methods[0]
expect( method.isVarArgs ).to be false
expect( j_class.newInstance.szia('Jozko', 'Janko', 'Ferko') ).to eql 'Szia Jozko Janko Ferko'
expect { j_class.newInstance.szia('Jozko', 'Janko') }.to raise_error(ArgumentError)
method = Reflector.resolveMethod(sample, 'greet', org.jruby.runtime.builtin.IRubyObject[])
expect( method.isVarArgs ).to be true
expect( Reflector.invoke(sample, method) ).to eql 'Greetings []!'
expect( j_class.newInstance.greet ).to eql 'Greetings []!'
expect( j_class.newInstance.greet('Janko') ).to eql 'Greetings ["Janko"]!'
method = Reflector.resolveMethod(sample, 'ola', java.lang.String[])
expect( method.isVarArgs ).to be true
expect( j_class.newInstance.ola('Jozko') ).to eql 'OLA Jozko'
end
it 'has a similar Java class name' do
ReifiedSample.become_java!
klass = ReifiedSample.java_class
expect( klass.getName ).to eql('rubyobj.ReifiedSample')
klass = Class.new(ReifiedSample)
hexid = klass.inspect.match(/(0x[0-9a-f]+)/)[1]
klass = klass.become_java!
expect( klass.getName ).to match /^rubyobj\.Class\$#{hexid}/ # rubyobj.Class$0x599f1b7
end
it 'works when reflecting annotations' do
klass = Class.new(ReifiedSample)
klass.add_class_annotations(Java::java_integration.fixtures.ServiceAnnotation => {
'service' => Class.new(Java::java_integration.fixtures.Service).become_java!(false)
})
klass = klass.become_java!(false)
annotation = Reflector.getDeclaredAnnotation(klass, Java::java_integration.fixtures.ServiceAnnotation)
expect( annotation ).not_to be_nil
expect( annotation.service ).not_to be_nil
end
describe "java fields" do
let(:klass) { Class.new(&fields) }
let(:fields) { proc { java_field "java.lang.String foo" } }
subject { klass.become_java! }
it "adds specified fields to java_class" do
expect(subject.get_declared_fields.map { |f| f.get_name }).to eq(%w(ruby rubyClass foo))
end
it "lets you write to the fields" do
subject
expect(klass.new).to respond_to :foo
expect(klass.new).to respond_to :foo=
field = subject.get_declared_fields.to_a.detect { |f| f.get_name == "foo" }
instance = klass.new
instance.foo = "String Value"
expect(instance.foo).to eq("String Value")
expect(field.get(instance)).to eq("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.StringBuilder zot"
java_field "int intField"
java_field "byte[] byteField"
java_field "short shortField"
java_field "float floatField"
java_field "double doubleField"
}}
it "keeps the ordering as specified" do
fields = subject.get_declared_fields.map(&:name)
expect(fields).to eq(%w(ruby rubyClass foo bar baz zot intField byteField shortField floatField doubleField))
end
end
context "ivar using backing field" do
let(:fields) { proc {
java_field "java.lang.String stringField", instance_variable: true
java_field "java.lang.Thread.State enumField", instance_variable: true
java_field "java.util.Date dateField", instance_variable: true
java_field "java.lang.Object objField", instance_variable: true
java_field "int intField", instance_variable: true
java_field "boolean booleanField", instance_variable: true
java_field "double doubleField", instance_variable: true
}}
it "allows reads and writes to the java fields" do
subject
instance = klass.new
test_values = {
:@stringField=>[nil, "A String", "A different string"],
:@enumField=>[nil, Java::java.lang.Thread::State::TIMED_WAITING, Java::java.lang.Thread::State::TERMINATED],
:@dateField=>[nil, Java::java.util.Date.new(12345678),Java::java.util.Date.new(87654321)],
:@objField=>[nil, Java::java.util.Date.new(12345678),Java::java.util.Date.new(87654321)], #tests not unwrapping
:@intField=>[0, 122448,-98765],
:@booleanField=>[false, true, false],
:@doubleField=>[0.0,6.28,-2.71828]
}
test_values.each do |var_sym, value|
m_get = var_sym.to_s[1..-1].to_sym # strip "@"
m_set = :"#{m_get}="
# check the default jvm values
expect(instance.instance_variable_get(var_sym)).to eq(value.first)
expect(instance.instance_variable_get(var_sym)).to eq(instance.send(m_get))
expect(instance.class.java_class.get_field(m_get.to_s).get(instance)).to eq(value.first)
# now set via ivar, and check again
instance.instance_variable_set(var_sym, value[1])
expect(instance.instance_variable_get(var_sym)).to eq(value[1])
expect(instance.send(m_get)).to eq(value[1])
expect(instance.class.java_class.get_field(m_get.to_s).get(instance)).to eq(value[1])
# now set via field, and check again
instance.send(m_set, value[2])
expect(instance.instance_variable_get(var_sym)).to eq(value[2])
expect(instance.send(m_get)).to eq(value[2])
expect(instance.class.java_class.get_field(m_get.to_s).get(instance)).to eq(value[2])
end
end
end
context "ivar using backing field (concrete java extension)" do
let(:klass) { Class.new(java.lang.Object, &fields) }
let(:fields) { proc {
java_field "java.lang.String stringField", instance_variable: true
java_field "java.lang.Thread.State enumField", instance_variable: true
java_field "java.util.Date dateField", instance_variable: true
java_field "java.lang.Object objField", instance_variable: true
java_field "int intField", instance_variable: true
java_field "boolean booleanField", instance_variable: true
java_field "double doubleField", instance_variable: true
}}
it "allows reads and writes to the java fields" do
subject
instance = klass.new
test_values = {
:@stringField=>[nil, "A String", "A different string"],
:@enumField=>[nil, Java::java.lang.Thread::State::TIMED_WAITING, Java::java.lang.Thread::State::TERMINATED],
:@dateField=>[nil, Java::java.util.Date.new(12345678),Java::java.util.Date.new(87654321)],
:@objField=>[nil, Java::java.util.Date.new(12345678),Java::java.util.Date.new(87654321)], #tests not unwrapping
:@intField=>[0, 122448,-98765],
:@booleanField=>[false, true, false],
:@doubleField=>[0.0,6.28,-2.71828]
}
test_values.each do |var_sym, value|
m_get = var_sym.to_s[1..-1].to_sym # strip "@"
m_set = :"#{m_get}="
# check the default jvm values
expect(instance.instance_variable_get(var_sym)).to eq(value.first)
expect(instance.instance_variable_get(var_sym)).to eq(instance.send(m_get))
expect(instance.class.java_class.get_field(m_get.to_s).get(instance)).to eq(value.first)
# now set via ivar, and check again
instance.instance_variable_set(var_sym, value[1])
expect(instance.instance_variable_get(var_sym)).to eq(value[1])
expect(instance.send(m_get)).to eq(value[1])
expect(instance.class.java_class.get_field(m_get.to_s).get(instance)).to eq(value[1])
# now set via field, and check again
instance.send(m_set, value[2])
expect(instance.instance_variable_get(var_sym)).to eq(value[2])
expect(instance.send(m_get)).to eq(value[2])
expect(instance.class.java_class.get_field(m_get.to_s).get(instance)).to eq(value[2])
end
end
end
end
end