Add ability to create handle scopes

ext/v8/init.cc

@@ -10,9 +10,9 @@ extern "C" {
   void Init_init() {
     V8::Init();
     Isolate::Init();
+    Handles::Init();
     // v8::Locker lock();
     // GC::Init();
-    // Handles::Init();
     // Accessor::Init();
     // Context::Init();
     // Invocation::Init();

spec/c/handles_spec.rb

@@ -0,0 +1,22 @@
+require 'v8/init'
+
+describe 'handles' do
+  describe '#HandleScope' do
+    let(:isolate) { V8::C::Isolate.New }
+
+    it 'can allocate handle scopes' do
+      V8::C::HandleScope(isolate) do
+      end
+    end
+
+    it 'isn\'t the end of the world if a ruby exception is raised inside a HandleScope' do
+      begin
+        V8::C::HandleScope(isolate) do
+          raise 'boom!'
+        end
+      rescue StandardError => e
+        expect(e.message).to eq 'boom!'
+      end
+    end
+  end
+end

spec/c/isolate_spec.rb

@@ -1,7 +1,7 @@
 require 'v8/init'
 
 describe V8::C::Isolate do
-  it "can create a new isolate" do
+  it 'can create a new isolate' do
     expect(V8::C::Isolate.New).to be
   end
 end

spec/c/v8_spec.rb

@@ -0,0 +1,7 @@
+require 'v8/init'
+
+describe V8::C::V8 do
+  it 'can say its version' do
+    expect(V8::C::V8.GetVersion).to be_a String
+  end
+end