Merge pull request #373 from phoet/patch-1

some remarks on testing in the readme

README.md

@@ -686,6 +686,34 @@ for the current user, the advantage of this approach is that, by setting
 `serialization_scope` to `nil`, the `index` action no longer will need to make
 that query, only the `show` action will.
 
+## Testing
+
+In order to test a Serializer, you can just call `.new` on it, passing the object to serialize:
+
+### MiniTest
+
+```ruby
+class TestPostSerializer < Minitest::Test
+  def setup
+    @serializer = PostSerializer.new Post.new(id: 123, title: 'some title', body: 'some text')
+  end
+
+  def test_special_json_for_api
+    assert_equal '{"post":{"id":123,"title":"some title","body":"some text"}}', @serializer.to_json
+  end
+```
+
+### RSpec
+
+```ruby
+describe PostSerializer do
+  it "creates special JSON for the API" do
+    serializer = PostSerializer.new Post.new(id: 123, title: 'some title', body: 'some text')
+    expect(serializer.to_json).to eql('{"post":{"id":123,"title":"some title","body":"some text"}}')
+  end
+end
+```
+
 ## Caching
 
 NOTE: This functionality was removed from AMS and it's in the TODO list.