Merge pull request #6761 from freelancing-god/db-rake

Get logic out of db rake tasks, and into classes and objects

4 files changed, 715 insertions, 0 deletions

diff --git a/activerecord/test/cases/database_tasks_test.rb b/activerecord/test/cases/database_tasks_test.rb
new file mode 100644
index 0000000000..503e26f549
--- /dev/null
+++ b/activerecord/test/cases/database_tasks_test.rb
@@ -0,0 +1,297 @@
+require 'cases/helper'
+
+module ActiveRecord
+  class DatabaseTasksCreateTest < ActiveRecord::TestCase
+    def setup
+      @mysql_tasks, @postgresql_tasks, @sqlite_tasks = stub, stub, stub
+
+      ActiveRecord::Tasks::MySQLDatabaseTasks.stubs(:new).returns @mysql_tasks
+      ActiveRecord::Tasks::PostgreSQLDatabaseTasks.stubs(:new).
+        returns @postgresql_tasks
+      ActiveRecord::Tasks::SQLiteDatabaseTasks.stubs(:new).returns @sqlite_tasks
+    end
+
+    def test_mysql_create
+      @mysql_tasks.expects(:create)
+
+      ActiveRecord::Tasks::DatabaseTasks.create 'adapter' => 'mysql'
+    end
+
+    def test_mysql2_create
+      @mysql_tasks.expects(:create)
+
+      ActiveRecord::Tasks::DatabaseTasks.create 'adapter' => 'mysql2'
+    end
+
+    def test_postgresql_create
+      @postgresql_tasks.expects(:create)
+
+      ActiveRecord::Tasks::DatabaseTasks.create 'adapter' => 'postgresql'
+    end
+
+    def test_sqlite_create
+      @sqlite_tasks.expects(:create)
+
+      ActiveRecord::Tasks::DatabaseTasks.create 'adapter' => 'sqlite3'
+    end
+  end
+
+  class DatabaseTasksCreateAllTest < ActiveRecord::TestCase
+    def setup
+      @configurations = {'development' => {'database' => 'my-db'}}
+
+      ActiveRecord::Base.stubs(:configurations).returns(@configurations)
+    end
+
+    def test_ignores_configurations_without_databases
+      @configurations['development'].merge!('database' => nil)
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:create).never
+
+      ActiveRecord::Tasks::DatabaseTasks.create_all
+    end
+
+    def test_ignores_remote_databases
+      @configurations['development'].merge!('host' => 'my.server.tld')
+      $stderr.stubs(:puts).returns(nil)
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:create).never
+
+      ActiveRecord::Tasks::DatabaseTasks.create_all
+    end
+
+    def test_warning_for_remote_databases
+      @configurations['development'].merge!('host' => 'my.server.tld')
+
+      $stderr.expects(:puts).with('This task only modifies local databases. my-db is on a remote host.')
+
+      ActiveRecord::Tasks::DatabaseTasks.create_all
+    end
+
+    def test_creates_configurations_with_local_ip
+      @configurations['development'].merge!('host' => '127.0.0.1')
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:create)
+
+      ActiveRecord::Tasks::DatabaseTasks.create_all
+    end
+
+    def test_creates_configurations_with_local_host
+      @configurations['development'].merge!('host' => 'localhost')
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:create)
+
+      ActiveRecord::Tasks::DatabaseTasks.create_all
+    end
+
+    def test_creates_configurations_with_blank_hosts
+      @configurations['development'].merge!('host' => nil)
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:create)
+
+      ActiveRecord::Tasks::DatabaseTasks.create_all
+    end
+  end
+
+  class DatabaseTasksCreateCurrentTest < ActiveRecord::TestCase
+    def setup
+      @configurations = {
+        'development' => {'database' => 'dev-db'},
+        'test'        => {'database' => 'test-db'},
+        'production'  => {'database' => 'prod-db'}
+      }
+
+      ActiveRecord::Base.stubs(:configurations).returns(@configurations)
+      ActiveRecord::Base.stubs(:establish_connection).returns(true)
+    end
+
+    def test_creates_current_environment_database
+      ActiveRecord::Tasks::DatabaseTasks.expects(:create).
+        with('database' => 'prod-db')
+
+      ActiveRecord::Tasks::DatabaseTasks.create_current(
+        ActiveSupport::StringInquirer.new('production')
+      )
+    end
+
+    def test_creates_test_database_when_environment_is_database
+      ActiveRecord::Tasks::DatabaseTasks.expects(:create).
+        with('database' => 'dev-db')
+      ActiveRecord::Tasks::DatabaseTasks.expects(:create).
+        with('database' => 'test-db')
+
+      ActiveRecord::Tasks::DatabaseTasks.create_current(
+        ActiveSupport::StringInquirer.new('development')
+      )
+    end
+
+    def test_establishes_connection_for_the_given_environment
+      ActiveRecord::Tasks::DatabaseTasks.stubs(:create).returns true
+
+      ActiveRecord::Base.expects(:establish_connection).with('development')
+
+      ActiveRecord::Tasks::DatabaseTasks.create_current(
+        ActiveSupport::StringInquirer.new('development')
+      )
+    end
+  end
+
+  class DatabaseTasksDropTest < ActiveRecord::TestCase
+    def setup
+      @mysql_tasks, @postgresql_tasks, @sqlite_tasks = stub, stub, stub
+
+      ActiveRecord::Tasks::MySQLDatabaseTasks.stubs(:new).returns @mysql_tasks
+      ActiveRecord::Tasks::PostgreSQLDatabaseTasks.stubs(:new).
+        returns @postgresql_tasks
+      ActiveRecord::Tasks::SQLiteDatabaseTasks.stubs(:new).returns @sqlite_tasks
+    end
+
+    def test_mysql_create
+      @mysql_tasks.expects(:drop)
+
+      ActiveRecord::Tasks::DatabaseTasks.drop 'adapter' => 'mysql'
+    end
+
+    def test_mysql2_create
+      @mysql_tasks.expects(:drop)
+
+      ActiveRecord::Tasks::DatabaseTasks.drop 'adapter' => 'mysql2'
+    end
+
+    def test_postgresql_create
+      @postgresql_tasks.expects(:drop)
+
+      ActiveRecord::Tasks::DatabaseTasks.drop 'adapter' => 'postgresql'
+    end
+
+    def test_sqlite_create
+      @sqlite_tasks.expects(:drop)
+
+      ActiveRecord::Tasks::DatabaseTasks.drop 'adapter' => 'sqlite3'
+    end
+  end
+
+  class DatabaseTasksDropAllTest < ActiveRecord::TestCase
+    def setup
+      @configurations = {:development => {'database' => 'my-db'}}
+
+      ActiveRecord::Base.stubs(:configurations).returns(@configurations)
+    end
+
+    def test_ignores_configurations_without_databases
+      @configurations[:development].merge!('database' => nil)
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:drop).never
+
+      ActiveRecord::Tasks::DatabaseTasks.drop_all
+    end
+
+    def test_ignores_remote_databases
+      @configurations[:development].merge!('host' => 'my.server.tld')
+      $stderr.stubs(:puts).returns(nil)
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:drop).never
+
+      ActiveRecord::Tasks::DatabaseTasks.drop_all
+    end
+
+    def test_warning_for_remote_databases
+      @configurations[:development].merge!('host' => 'my.server.tld')
+
+      $stderr.expects(:puts).with('This task only modifies local databases. my-db is on a remote host.')
+
+      ActiveRecord::Tasks::DatabaseTasks.drop_all
+    end
+
+    def test_creates_configurations_with_local_ip
+      @configurations[:development].merge!('host' => '127.0.0.1')
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:drop)
+
+      ActiveRecord::Tasks::DatabaseTasks.drop_all
+    end
+
+    def test_creates_configurations_with_local_host
+      @configurations[:development].merge!('host' => 'localhost')
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:drop)
+
+      ActiveRecord::Tasks::DatabaseTasks.drop_all
+    end
+
+    def test_creates_configurations_with_blank_hosts
+      @configurations[:development].merge!('host' => nil)
+
+      ActiveRecord::Tasks::DatabaseTasks.expects(:drop)
+
+      ActiveRecord::Tasks::DatabaseTasks.drop_all
+    end
+  end
+
+  class DatabaseTasksDropCurrentTest < ActiveRecord::TestCase
+    def setup
+      @configurations = {
+        'development' => {'database' => 'dev-db'},
+        'test'        => {'database' => 'test-db'},
+        'production'  => {'database' => 'prod-db'}
+      }
+
+      ActiveRecord::Base.stubs(:configurations).returns(@configurations)
+    end
+
+    def test_creates_current_environment_database
+      ActiveRecord::Tasks::DatabaseTasks.expects(:drop).
+        with('database' => 'prod-db')
+
+      ActiveRecord::Tasks::DatabaseTasks.drop_current(
+        ActiveSupport::StringInquirer.new('production')
+      )
+    end
+
+    def test_creates_test_database_when_environment_is_database
+      ActiveRecord::Tasks::DatabaseTasks.expects(:drop).
+        with('database' => 'dev-db')
+      ActiveRecord::Tasks::DatabaseTasks.expects(:drop).
+        with('database' => 'test-db')
+
+      ActiveRecord::Tasks::DatabaseTasks.drop_current(
+        ActiveSupport::StringInquirer.new('development')
+      )
+    end
+  end
+
+  class DatabaseTasksPurgeTest < ActiveRecord::TestCase
+    def setup
+      @mysql_tasks, @postgresql_tasks, @sqlite_tasks = stub, stub, stub
+
+      ActiveRecord::Tasks::MySQLDatabaseTasks.stubs(:new).returns @mysql_tasks
+      ActiveRecord::Tasks::PostgreSQLDatabaseTasks.stubs(:new).
+        returns @postgresql_tasks
+      ActiveRecord::Tasks::SQLiteDatabaseTasks.stubs(:new).returns @sqlite_tasks
+    end
+
+    def test_mysql_create
+      @mysql_tasks.expects(:purge)
+
+      ActiveRecord::Tasks::DatabaseTasks.purge 'adapter' => 'mysql'
+    end
+
+    def test_mysql2_create
+      @mysql_tasks.expects(:purge)
+
+      ActiveRecord::Tasks::DatabaseTasks.purge 'adapter' => 'mysql2'
+    end
+
+    def test_postgresql_create
+      @postgresql_tasks.expects(:purge)
+
+      ActiveRecord::Tasks::DatabaseTasks.purge 'adapter' => 'postgresql'
+    end
+
+    def test_sqlite_create
+      @sqlite_tasks.expects(:purge)
+
+      ActiveRecord::Tasks::DatabaseTasks.purge 'adapter' => 'sqlite3'
+    end
+  end
+end
diff --git a/activerecord/test/cases/mysql_rake_test.rb b/activerecord/test/cases/mysql_rake_test.rb
new file mode 100644
index 0000000000..cdb0968bb6
--- /dev/null
+++ b/activerecord/test/cases/mysql_rake_test.rb
@@ -0,0 +1,179 @@
+require 'cases/helper'
+require 'mysql'
+
+module ActiveRecord
+  class MysqlDBCreateTest < ActiveRecord::TestCase
+    def setup
+      @connection    = stub(:create_database => true)
+      @configuration = {
+        'adapter'  => 'mysql',
+        'database' => 'my-app-db'
+      }
+
+      ActiveRecord::Base.stubs(:connection).returns(@connection)
+      ActiveRecord::Base.stubs(:establish_connection).returns(true)
+    end
+
+    def test_establishes_connection_without_database
+      ActiveRecord::Base.expects(:establish_connection).
+        with('adapter' => 'mysql', 'database' => nil)
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_creates_database_with_default_options
+      @connection.expects(:create_database).
+        with('my-app-db', {:charset => 'utf8', :collation => 'utf8_unicode_ci'})
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_creates_database_with_given_options
+      @connection.expects(:create_database).
+        with('my-app-db', {:charset => 'latin', :collation => 'latin_ci'})
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration.merge(
+        'charset' => 'latin', 'collation' => 'latin_ci'
+      )
+    end
+
+    def test_establishes_connection_to_database
+      ActiveRecord::Base.expects(:establish_connection).with(@configuration)
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+  end
+
+  class MysqlDBCreateAsRootTest < ActiveRecord::TestCase
+    def setup
+      @connection    = stub(:create_database => true, :execute => true)
+      @error         = Mysql::Error.new "Invalid permissions"
+      @configuration = {
+        'adapter'  => 'mysql',
+        'database' => 'my-app-db',
+        'username' => 'pat',
+        'password' => 'wossname'
+      }
+
+      $stdin.stubs(:gets).returns("secret\n")
+      $stdout.stubs(:print).returns(nil)
+      @error.stubs(:errno).returns(1045)
+      ActiveRecord::Base.stubs(:connection).returns(@connection)
+      ActiveRecord::Base.stubs(:establish_connection).raises(@error).then.
+        returns(true)
+    end
+
+    def test_root_password_is_requested
+      $stdin.expects(:gets).returns("secret\n")
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_connection_established_as_root
+      ActiveRecord::Base.expects(:establish_connection).with({
+        'adapter'  => 'mysql',
+        'database' => nil,
+        'username' => 'root',
+        'password' => 'secret'
+      })
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_database_created_by_root
+      @connection.expects(:create_database).
+        with('my-app-db', :charset => 'utf8', :collation => 'utf8_unicode_ci')
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_grant_privileges_for_normal_user
+      @connection.expects(:execute).with("GRANT ALL PRIVILEGES ON my-app-db.* TO 'pat'@'localhost' IDENTIFIED BY 'wossname' WITH GRANT OPTION;")
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_connection_established_as_normal_user
+      ActiveRecord::Base.expects(:establish_connection).returns do
+        ActiveRecord::Base.expects(:establish_connection).with({
+          'adapter'  => 'mysql',
+          'database' => 'my-app-db',
+          'username' => 'pat',
+          'password' => 'secret'
+        })
+
+        raise @error
+      end
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_sends_output_to_stderr_when_other_errors
+      @error.stubs(:errno).returns(42)
+
+      $stderr.expects(:puts).at_least_once.returns(nil)
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+  end
+
+  class MySQLDBDropTest < ActiveRecord::TestCase
+    def setup
+      @connection    = stub(:drop_database => true)
+      @configuration = {
+        'adapter'  => 'mysql',
+        'database' => 'my-app-db'
+      }
+
+      ActiveRecord::Base.stubs(:connection).returns(@connection)
+      ActiveRecord::Base.stubs(:establish_connection).returns(true)
+    end
+
+    def test_establishes_connection_to_postgresql_database
+      ActiveRecord::Base.expects(:establish_connection).with @configuration
+
+      ActiveRecord::Tasks::DatabaseTasks.drop @configuration
+    end
+
+    def test_drops_database
+      @connection.expects(:drop_database).with('my-app-db')
+
+      ActiveRecord::Tasks::DatabaseTasks.drop @configuration
+    end
+  end
+
+  class MySQLTestPurge < ActiveRecord::TestCase
+    def setup
+      @connection    = stub(:recreate_database => true)
+      @configuration = {
+        'adapter'  => 'mysql',
+        'database' => 'test-db'
+      }
+
+      ActiveRecord::Base.stubs(:connection).returns(@connection)
+      ActiveRecord::Base.stubs(:establish_connection).returns(true)
+    end
+
+    def test_establishes_connection_to_test_database
+      ActiveRecord::Base.expects(:establish_connection).with(:test)
+
+      ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+    end
+
+    def test_recreates_database_with_the_default_options
+      @connection.expects(:recreate_database).
+        with('test-db', {:charset => 'utf8', :collation => 'utf8_unicode_ci'})
+
+      ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+    end
+
+    def test_recreates_database_with_the_given_options
+      @connection.expects(:recreate_database).
+        with('test-db', {:charset => 'latin', :collation => 'latin_ci'})
+
+      ActiveRecord::Tasks::DatabaseTasks.purge @configuration.merge(
+        'charset' => 'latin', 'collation' => 'latin_ci'
+      )
+    end
+  end
+end
diff --git a/activerecord/test/cases/postgresql_rake_test.rb b/activerecord/test/cases/postgresql_rake_test.rb
new file mode 100644
index 0000000000..6d6ede354d
--- /dev/null
+++ b/activerecord/test/cases/postgresql_rake_test.rb
@@ -0,0 +1,135 @@
+require 'cases/helper'
+
+module ActiveRecord
+  class PostgreSQLDBCreateTest < ActiveRecord::TestCase
+    def setup
+      @connection    = stub(:create_database => true)
+      @configuration = {
+        'adapter'  => 'postgresql',
+        'database' => 'my-app-db'
+      }
+
+      ActiveRecord::Base.stubs(:connection).returns(@connection)
+      ActiveRecord::Base.stubs(:establish_connection).returns(true)
+    end
+
+    def test_establishes_connection_to_postgresql_database
+      ActiveRecord::Base.expects(:establish_connection).with(
+        'adapter'            => 'postgresql',
+        'database'           => 'postgres',
+        'schema_search_path' => 'public'
+      )
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_creates_database_with_default_encoding
+      @connection.expects(:create_database).
+        with('my-app-db', @configuration.merge('encoding' => 'utf8'))
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_creates_database_with_given_encoding
+      @connection.expects(:create_database).
+        with('my-app-db', @configuration.merge('encoding' => 'latin'))
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration.
+        merge('encoding' => 'latin')
+    end
+
+    def test_establishes_connection_to_new_database
+      ActiveRecord::Base.expects(:establish_connection).with(@configuration)
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+
+    def test_db_create_with_error_prints_message
+      ActiveRecord::Base.stubs(:establish_connection).raises(Exception)
+
+      $stderr.stubs(:puts).returns(true)
+      $stderr.expects(:puts).
+        with("Couldn't create database for #{@configuration.inspect}")
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration
+    end
+  end
+
+  class PostgreSQLDBDropTest < ActiveRecord::TestCase
+    def setup
+      @connection    = stub(:drop_database => true)
+      @configuration = {
+        'adapter'  => 'postgresql',
+        'database' => 'my-app-db'
+      }
+
+      ActiveRecord::Base.stubs(:connection).returns(@connection)
+      ActiveRecord::Base.stubs(:establish_connection).returns(true)
+    end
+
+    def test_establishes_connection_to_postgresql_database
+      ActiveRecord::Base.expects(:establish_connection).with(
+        'adapter'            => 'postgresql',
+        'database'           => 'postgres',
+        'schema_search_path' => 'public'
+      )
+
+      ActiveRecord::Tasks::DatabaseTasks.drop @configuration
+    end
+
+    def test_drops_database
+      @connection.expects(:drop_database).with('my-app-db')
+
+      ActiveRecord::Tasks::DatabaseTasks.drop @configuration
+    end
+  end
+
+  class PostgreSQLPurgeTest < ActiveRecord::TestCase
+    def setup
+      @connection    = stub(:create_database => true, :drop_database => true)
+      @configuration = {
+        'adapter'  => 'postgresql',
+        'database' => 'my-app-db'
+      }
+
+      ActiveRecord::Base.stubs(:connection).returns(@connection)
+      ActiveRecord::Base.stubs(:clear_active_connections!).returns(true)
+      ActiveRecord::Base.stubs(:establish_connection).returns(true)
+    end
+
+    def test_clears_active_connections
+      ActiveRecord::Base.expects(:clear_active_connections!)
+
+      ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+    end
+
+    def test_establishes_connection_to_postgresql_database
+      ActiveRecord::Base.expects(:establish_connection).with(
+        'adapter'            => 'postgresql',
+        'database'           => 'postgres',
+        'schema_search_path' => 'public'
+      )
+
+      ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+    end
+
+    def test_drops_database
+      @connection.expects(:drop_database).with('my-app-db')
+
+      ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+    end
+
+    def test_creates_database
+      @connection.expects(:create_database).
+        with('my-app-db', @configuration.merge('encoding' => 'utf8'))
+
+      ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+    end
+
+    def test_establishes_connection
+      ActiveRecord::Base.expects(:establish_connection).with(@configuration)
+
+      ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+    end
+  end
+end
diff --git a/activerecord/test/cases/sqlite_rake_test.rb b/activerecord/test/cases/sqlite_rake_test.rb
new file mode 100644
index 0000000000..f96a161df1
--- /dev/null
+++ b/activerecord/test/cases/sqlite_rake_test.rb
@@ -0,0 +1,104 @@
+require 'cases/helper'
+require 'pathname'
+
+module ActiveRecord
+  class SqliteDBCreateTest < ActiveRecord::TestCase
+    def setup
+      @database      = "db_create.sqlite3"
+      @connection    = stub :connection
+      @configuration = {
+        'adapter'  => 'sqlite3',
+        'database' => @database
+      }
+
+      File.stubs(:exist?).returns(false)
+      ActiveRecord::Base.stubs(:connection).returns(@connection)
+      ActiveRecord::Base.stubs(:establish_connection).returns(true)
+    end
+
+    def test_db_checks_database_exists
+      File.expects(:exist?).with(@database).returns(false)
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
+    end
+
+    def test_db_create_when_file_exists
+      File.stubs(:exist?).returns(true)
+
+      $stderr.expects(:puts).with("#{@database} already exists")
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
+    end
+
+    def test_db_create_with_file_does_nothing
+      File.stubs(:exist?).returns(true)
+      $stderr.stubs(:puts).returns(nil)
+
+      ActiveRecord::Base.expects(:establish_connection).never
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
+    end
+
+    def test_db_create_establishes_a_connection
+      ActiveRecord::Base.expects(:establish_connection).with(@configuration)
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
+    end
+
+    def test_db_create_with_error_prints_message
+      ActiveRecord::Base.stubs(:establish_connection).raises(Exception)
+
+      $stderr.stubs(:puts).returns(true)
+      $stderr.expects(:puts).
+        with("Couldn't create database for #{@configuration.inspect}")
+
+      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
+    end
+  end
+
+  class SqliteDBDropTest < ActiveRecord::TestCase
+    def setup
+      @database      = "db_create.sqlite3"
+      @path          = stub(:to_s => '/absolute/path', :absolute? => true)
+      @configuration = {
+        'adapter'  => 'sqlite3',
+        'database' => @database
+      }
+
+      Pathname.stubs(:new).returns(@path)
+      File.stubs(:join).returns('/former/relative/path')
+      FileUtils.stubs(:rm).returns(true)
+    end
+
+    def test_creates_path_from_database
+      Pathname.expects(:new).with(@database).returns(@path)
+
+      ActiveRecord::Tasks::DatabaseTasks.drop @configuration, '/rails/root'
+    end
+
+    def test_removes_file_with_absolute_path
+      @path.stubs(:absolute?).returns(true)
+
+      FileUtils.expects(:rm).with('/absolute/path')
+
+      ActiveRecord::Tasks::DatabaseTasks.drop @configuration, '/rails/root'
+    end
+
+    def test_generates_absolute_path_with_given_root
+      @path.stubs(:absolute?).returns(false)
+
+      File.expects(:join).with('/rails/root', @path).
+        returns('/former/relative/path')
+
+      ActiveRecord::Tasks::DatabaseTasks.drop @configuration, '/rails/root'
+    end
+
+    def test_removes_file_with_relative_path
+      @path.stubs(:absolute?).returns(false)
+
+      FileUtils.expects(:rm).with('/former/relative/path')
+
+      ActiveRecord::Tasks::DatabaseTasks.drop @configuration, '/rails/root'
+    end
+  end
+end