test/test_double.rb in double-0.0.1 vs test/test_double.rb in double-0.1.0

@@ -1,6 +1,40 @@
-require 'helper'
+require 'test/unit'
 require 'double'
 
-describe Double do
-  it 'pends'
+module Foo
+  class << self
+    attr_accessor :double
+  end
+end
+
+class TestDouble < Test::Unit::TestCase
+  def test_lazy_evaluate
+    assert_raise NameError do
+      Foo.class_eval 'self.double = Bar'
+    end
+
+    Foo.extend Double
+    Foo.class_eval 'self.double = Bar'
+    assert_raise NameError do
+      Foo.double.baz
+    end
+
+    Kernel.const_set :Bar, Module.new
+    assert_raise NoMethodError do
+      Bar.baz
+    end
+    assert_raise NoMethodError do
+      Foo.double.baz
+    end
+
+    Bar.class_eval { def self.baz; 1; end }
+    assert_equal 1, Bar.baz
+    assert_equal 1, Foo.double.baz
+  end
+
+  def test_memoize
+    Double::Klass.class_eval { def method_missing(*args); 2; end }
+    assert_equal 1, Foo.double.baz
+    assert_equal 2, Foo.double.qux
+  end
 end