Fake database implementation. MySQL not required to run the tests

2 files changed, 50 insertions, 6 deletions

diff --git a/spec/fakes/database.rb b/spec/fakes/database.rb
new file mode 100644
index 0000000000..1b73986e0b
--- /dev/null
+++ b/spec/fakes/database.rb
@@ -0,0 +1,48 @@
+class FakeDatabase
+  def self.connection
+    @@conn ||= FakeConnection.new
+  end
+end
+
+class FakeConnection
+  include ActiveRecord::ConnectionAdapters::Quoting
+  
+  def columns(table_name, comment)
+    case table_name
+    when "users"
+      [
+        FakeColumn.new("id", :integer),
+        FakeColumn.new("name", :string)
+      ]
+    when "photos"
+      [
+        FakeColumn.new("id", :integer),
+        FakeColumn.new("user_id", :integer),
+        FakeColumn.new("camera_id", :integer)
+      ]
+    else
+      raise "unknown table: #{table_name}"
+    end
+  end
+
+  def select_all(*args)
+    []
+  end
+  
+  def quote_column_name(column_name)
+    "`#{column_name}`"
+  end
+
+  def quote_table_name(table_name)
+    "`#{table_name}`"
+  end
+end
+
+class FakeColumn
+  attr_reader :name, :type
+  
+  def initialize(name, type)
+    @name = name
+    @type = type
+  end
+end
\ No newline at end of file
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 0d1613e223..af4e71d2d3 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -6,11 +6,7 @@ dir = File.dirname(__FILE__)
 $LOAD_PATH.unshift "#{dir}/../lib"
 Dir["#{dir}/matchers/*"].each { |m| require "#{dir}/matchers/#{File.basename(m)}" }
 require 'active_relation'
-
-FileUtils.cp("#{dir}/../config/database.yml.example", "#{dir}/../config/database.yml") unless File.exist?("#{dir}/../config/database.yml")
-
-ActiveRecord::Base.configurations = YAML::load(IO.read("#{dir}/../config/database.yml"))
-ActiveRecord::Base.establish_connection 'test'
+require "#{dir}/fakes/database"
 
 class Hash
   def shift
@@ -24,6 +20,6 @@ Spec::Runner.configure do |config|
   config.include(BeLikeMatcher, HashTheSameAsMatcher)
   config.mock_with :rr
   config.before do
-    ActiveRelation::Table.engine = ActiveRelation::Engine.new(ActiveRecord::Base)
+    ActiveRelation::Table.engine = ActiveRelation::Engine.new(FakeDatabase)
   end
 end
\ No newline at end of file