1 files changed, 56 insertions, 0 deletions
diff --git a/spec/support/model.rb b/spec/support/model.rb
new file mode 100644
index 0000000000..bd4376efcb
--- /dev/null
+++ b/spec/support/model.rb
@@ -0,0 +1,56 @@
+module Arel
+  module Testing
+    class Engine
+      attr_reader :rows
+
+      def initialize
+        @rows = []
+      end
+
+      def supports(operation)
+        false
+      end
+
+      def read(relation)
+        @rows.dup.map { |r| Row.new(relation, r) }
+      end
+
+      def create(insert)
+        @rows << insert.record.tuple
+        insert
+      end
+    end
+  end
+
+  class Model < Relation
+    attr_reader :engine, :attributes
+
+    def self.build
+      relation = new
+      yield relation
+      relation
+    end
+
+    def initialize
+      @attributes = []
+    end
+
+    def engine(engine = nil)
+      @engine = engine if engine
+      @engine
+    end
+
+    def attribute(name, type)
+      @attributes << type.new(self, name)
+    end
+
+    def format(attribute, value)
+      value
+    end
+
+    def insert(row)
+      insert = super Arel::Row.new(self, row)
+      insert.record
+    end
+  end
+end
+\ No newline at end of file