--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.ruby.test/src/com/oracle/truffle/ruby/test/language/ClassTests.java	Mon Jan 06 17:12:09 2014 +0000
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
+ * code is released under a tri EPL/GPL/LGPL license. You can use it,
+ * redistribute it and/or modify it under the terms of the:
+ *
+ * Eclipse Public License version 1.0
+ * GNU General Public License version 2
+ * GNU Lesser General Public License version 2.1
+ */
+package com.oracle.truffle.ruby.test.language;
+
+import org.junit.*;
+
+import com.oracle.truffle.ruby.test.*;
+
+/**
+ * Test {@code class} expressions.
+ */
+public class ClassTests extends RubyTests {
+
+    @Test
+    public void testDefine() {
+        assertPrints("Foo\n", "class Foo; end; puts Foo");
+    }
+
+    @Test
+    public void testMethods() {
+        assertPrints("14\n", "class Foo; def test; return 14; end; end; foo=Foo.new; puts foo.test");
+        assertPrints("14\n", "class Foo; def test(x); return x; end; end; foo=Foo.new; puts foo.test(14)");
+    }
+
+    @Test
+    public void testDefineHasScope() {
+        assertPrints("14\n", "x=14; class Foo; x=0; end; puts x");
+        assertPrints("14\n", "class Foo; x=14; puts x; end");
+    }
+
+    @Test
+    public void testInitialise() {
+        assertPrints("14\n", "class Foo; def initialize; puts 14; end; end; Foo.new");
+        assertPrints("14\n", "class Foo; def initialize(x); puts x; end; end; Foo.new 14");
+        assertPrints("14\n", "class Foo; def initialize(x); puts x; end; end; Foo.new(14)");
+    }
+
+    @Test
+    public void testInstanceVariables() {
+        assertPrints("14\n", "class Foo; def a; @x=14; end; def b; @x; end; end; foo=Foo.new; foo.a; puts foo.b");
+    }
+
+    @Test
+    public void testMissingVariables() {
+        assertPrints("NilClass\n", "class Foo; def a; @x; end; end; foo=Foo.new; puts foo.a.class");
+    }
+
+    @Test
+    public void testClassConstants() {
+        assertPrints("14\n", "class Foo; X=14; def foo; puts X; end; end; foo=Foo.new; foo.foo");
+    }
+
+    @Test
+    public void testReopeningSingletonClass() {
+        assertPrints("1\n", "foo = Object.new; class << foo; def bar; puts 1; end; end; foo.bar");
+    }
+
+    @Test
+    public void testInheritance() {
+        assertPrints("14\n", "class Foo; def foo; puts 14; end; end; class Bar < Foo; end; Bar.new.foo");
+    }
+
+    @Test
+    public void testSingletonInheritance() {
+        assertPrints("14\n", "class Foo; def self.foo; puts 14; end; end; class Bar < Foo; end; Bar.foo");
+    }
+
+    @Test
+    public void testNestedClass() {
+        assertPrints("14\n", "class Foo; class Bar; def bar; 14; end; end; def foo; Bar.new; end; end; puts Foo.new.foo.bar");
+    }
+
+}