fix invalid syntax and sqlite rake failing tests

activerecord/lib/active_record/tasks/sqlite_database_tasks.rb

@@ -25,7 +25,6 @@ def drop
 
         FileUtils.rm(file) if File.exist?(file)
       end
-
       alias :purge :drop
 
       private
@@ -37,4 +36,6 @@ def configuration
       def root
         @root
       end
-    end
+    end
+  end
+end

activerecord/test/cases/mysql_rake_test.rb

@@ -176,4 +176,4 @@ def test_recreates_database_with_the_given_options
       )
     end
   end
-end
+end

activerecord/test/cases/postgresql_rake_test.rb

@@ -132,4 +132,4 @@ def test_establishes_connection
       ActiveRecord::Tasks::DatabaseTasks.purge @configuration
     end
   end
-end
+end

activerecord/test/cases/sqlite_rake_test.rb

@@ -4,7 +4,7 @@
 module ActiveRecord
   class SqliteDBCreateTest < ActiveRecord::TestCase
     def setup
-      @database      = "db_create.sqlite3"
+      @database      = 'db_create.sqlite3'
       @connection    = stub :connection
       @configuration = {
         'adapter'  => 'sqlite3',
@@ -77,6 +77,7 @@ def test_creates_path_from_database
     end
 
     def test_removes_file_with_absolute_path
+      File.stubs(:exist?).returns(true)
       @path.stubs(:absolute?).returns(true)
 
       FileUtils.expects(:rm).with('/absolute/path')
@@ -94,11 +95,12 @@ def test_generates_absolute_path_with_given_root
     end
 
     def test_removes_file_with_relative_path
+      File.stubs(:exist?).returns(true)
       @path.stubs(:absolute?).returns(false)
 
       FileUtils.expects(:rm).with('/former/relative/path')
 
       ActiveRecord::Tasks::DatabaseTasks.drop @configuration, '/rails/root'
     end
   end
-end
+end