add core/fixnum/plus spec

test/test-android/app/core/fixnum/plus_spec.rb

@@ -0,0 +1,27 @@
+class Core_Fixnum_Plus_Mock1 < Java::Lang::Object
+  def to_int
+    10
+  end
+end
+
+describe "Fixnum#+" do
+  it "returns self plus the given Integer" do
+    (491 + 2).should == 493
+    (90210 + 10).should == 90220
+
+p 9, bignum_value, 9 + bignum_value
+p 1001 + 5.219
+
+    (9 + bignum_value).should == 9223372036854775817
+    (1001 + 5.219).should == 1006.219
+  end
+
+  it "raises a TypeError when given a non-Integer" do
+    lambda {
+      obj = Core_Fixnum_Plus_Mock1.new
+      13 + obj
+    }.should raise_error(TypeError)
+    lambda { 13 + "10"    }.should raise_error(TypeError)
+    lambda { 13 + :symbol }.should raise_error(TypeError)
+  end
+end

test/test-android/app/main.rb

@@ -185,6 +185,18 @@ class Object
     # XXX we probably should be smarter here.
     obj
   end
+
+  def nan_value
+    0/0.0
+  end
+
+  def infinity_value
+    1/0.0
+  end
+
+  def bignum_value(plus=0)
+    0x8000_0000_0000_0000 + plus
+  end
 end
 
 class MainActivity < Android::App::Activity