added spec to check for core extention method

aliases

spec/core_ext_spec.rb

@@ -0,0 +1,19 @@
+require File.expand_path(File.dirname(__FILE__) + '/spec_helper')
+
+describe "Core Extensions" do
+  
+  it "should alias Numeric class methods" do
+    number = 1
+    number.sec.should == number.second
+    number.min.should == number.minute
+  end
+  
+  it "should alias Time instance methods" do
+    time = Time.now
+    time.secs_ago(10).should == time.ago(10)
+    time.seconds_ago(10).should == time.ago(10)
+    time.secs_since(10).should == time.since(10)
+    time.seconds_since(10).should == time.since(10)
+  end
+
+end