Missing test

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7674 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/test/json_serialization_test.rb

+require 'abstract_unit'
+require 'fixtures/contact'
+require 'fixtures/post'
+require 'fixtures/author'
+require 'fixtures/tagging'
+require 'fixtures/tag'
+require 'fixtures/comment'
+
+class JsonSerializationTest < Test::Unit::TestCase
+  def setup
+    # Quote all keys (so that we can test against strictly valid JSON).
+    ActiveSupport::JSON.unquote_hash_key_identifiers = false
+
+    @contact = Contact.new(
+      :name        => 'Konata Izumi',
+      :age         => 16,
+      :avatar      => 'binarydata',
+      :created_at  => Time.utc(2006, 8, 1),
+      :awesome     => true,
+      :preferences => { :shows => 'anime' }
+    )
+  end
+
+  def test_should_encode_all_encodable_attributes
+    json = @contact.to_json
+
+    assert_match %r{"name": "Konata Izumi"}, json
+    assert_match %r{"age": 16}, json
+    assert_match %r{"created_at": #{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))}}, json
+    assert_match %r{"awesome": true}, json
+    assert_match %r{"preferences": \{"shows": "anime"\}}, json
+  end
+
+  def test_should_allow_attribute_filtering_with_only
+    json = @contact.to_json(:only => [:name, :age])
+
+    assert_match %r{"name": "Konata Izumi"}, json
+    assert_match %r{"age": 16}, json
+    assert_no_match %r{"awesome": true}, json
+    assert_no_match %r{"created_at": #{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))}}, json
+    assert_no_match %r{"preferences": \{"shows": "anime"\}}, json
+  end
+
+  def test_should_allow_attribute_filtering_with_except
+    json = @contact.to_json(:except => [:name, :age])
+
+    assert_no_match %r{"name": "Konata Izumi"}, json
+    assert_no_match %r{"age": 16}, json
+    assert_match %r{"awesome": true}, json
+    assert_match %r{"created_at": #{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))}}, json
+    assert_match %r{"preferences": \{"shows": "anime"\}}, json
+  end
+
+  def test_methods_are_called_on_object
+    # Define methods on fixture.
+    def @contact.label; "Has cheezburger"; end
+    def @contact.favorite_quote; "Constraints are liberating"; end
+
+    # Single method.
+    assert_match %r{"label": "Has cheezburger"}, @contact.to_json(:only => :name, :methods => :label)
+
+    # Both methods.
+    methods_json = @contact.to_json(:only => :name, :methods => [:label, :favorite_quote])
+    assert_match %r{"label": "Has cheezburger"}, methods_json
+    assert_match %r{"favorite_quote": "Constraints are liberating"}, methods_json
+  end
+end
+
+class DatabaseConnectedJsonEncodingTest < Test::Unit::TestCase
+  fixtures :authors, :posts, :comments, :tags, :taggings
+
+  def setup
+    ActiveSupport::JSON.unquote_hash_key_identifiers = false
+
+    @david = authors(:david)
+  end
+
+  def test_includes_uses_association_name
+    json = @david.to_json(:include => :posts)
+    
+    assert_match %r{"posts": \[}, json
+
+    assert_match %r{"id": 1}, json
+    assert_match %r{"name": "David"}, json
+
+    assert_match %r{"author_id": 1}, json
+    assert_match %r{"title": "Welcome to the weblog"}, json
+    assert_match %r{"body": "Such a lovely day"}, json
+
+    assert_match %r{"title": "So I was thinking"}, json
+    assert_match %r{"body": "Like I hopefully always am"}, json
+  end
+
+  def test_includes_uses_association_name_and_applies_attribute_filters
+    json = @david.to_json(:include => { :posts => { :only => :title } })
+
+    assert_match %r{"name": "David"}, json
+    assert_match %r{"posts": \[}, json
+
+    assert_match %r{"title": "Welcome to the weblog"}, json
+    assert_no_match %r{"body": "Such a lovely day"}, json
+
+    assert_match %r{"title": "So I was thinking"}, json
+    assert_no_match %r{"body": "Like I hopefully always am"}, json
+  end
+
+  def test_includes_fetches_second_level_associations
+    json = @david.to_json(:include => { :posts => { :include => { :comments => { :only => :body } } } })
+
+    assert_match %r{"name": "David"}, json
+    assert_match %r{"posts": \[}, json
+
+    assert_match %r{"comments": \[}, json
+    assert_match %r{\{"body": "Thank you again for the welcome"\}}, json
+    assert_match %r{\{"body": "Don't think too hard"\}}, json
+    assert_no_match %r{"post_id": }, json
+  end
+
+  def test_includes_fetches_nth_level_associations
+    json = @david.to_json(
+      :include => {
+        :posts => {
+          :include => {
+            :taggings => {
+              :include => {
+                :tag => { :only => :name }
+              }
+            }
+          }
+        }
+    })
+
+    assert_match %r{"name": "David"}, json
+    assert_match %r{"posts": \[}, json
+
+    assert_match %r{"taggings": \[}, json
+    assert_match %r{"tag": \{"name": "General"\}}, json
+  end
+
+  def test_should_not_call_methods_on_associations_that_dont_respond
+    def @david.favorite_quote; "Constraints are liberating"; end
+    json = @david.to_json(:include => :posts, :methods => :favorite_quote)
+
+    assert !@david.posts.first.respond_to?(:favorite_quote)
+    assert_match %r{"favorite_quote": "Constraints are liberating"}, json
+    assert_equal %r{"favorite_quote": }.match(json).size, 1
+  end
+end
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