add module class method to RubyFoo

monkstone · monkstone · commit 294a3e4bbe67 · 2016-03-07T18:49:19.000Z
diff --git a/extensions/basic/jruby-ext/src/main/java/com/purbon/RubyFoo.java b/extensions/basic/jruby-ext/src/main/java/com/purbon/RubyFoo.java
@@ -32,6 +32,27 @@ public static IRubyObject buildString(ThreadContext context, IRubyObject recv) {
         Ruby runtime = context.getRuntime();
         return runtime.newString("This is a new String");
     }
+    
+    /**
+     * This is a kind of pointless module class method, but is simple to understand. 
+     * meta = true is waht makes this module class method
+     * The equivalent in ruby: 
+     * module Foo 
+     *   def self.bself_string
+     *     return 'This is String is from Foo.self' 
+     *   end
+     * end
+     *
+     * @param context ThreadContext
+     * @param recv the receiver
+     * @return A RubyString.
+     */
+    
+    @JRubyMethod(name = "self_string", module = true, meta = true)
+    public static IRubyObject buildSelfString(ThreadContext context, IRubyObject recv) {
+        Ruby runtime = context.getRuntime();
+        return runtime.newString("This is String is from Foo.self");
+    }
 
 
     /**
diff --git a/extensions/basic/test/foo_test.rb b/extensions/basic/test/foo_test.rb
@@ -22,6 +22,11 @@ def test_build_string
     assert_equal foo.build_string, 'This is a new String', 'build_string failed'
   end
   
+  def test_self_string
+    assert_equal Foo.self_string, 'This is String is from Foo.self', 'Failed module class method'
+    refute_respond_to foo, :self_string, 'Failed to refute instance method'
+  end
+  
   def test_alias
     assert_equal foo.build_string, foo.new_string, 'alias failed'
   end
