diff options
Diffstat (limited to 'activerecord/test/cases/adapters/postgresql/connection_test.rb')
| -rw-r--r-- | activerecord/test/cases/adapters/postgresql/connection_test.rb | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/activerecord/test/cases/adapters/postgresql/connection_test.rb b/activerecord/test/cases/adapters/postgresql/connection_test.rb new file mode 100644 index 0000000000..d26cda46fa --- /dev/null +++ b/activerecord/test/cases/adapters/postgresql/connection_test.rb @@ -0,0 +1,205 @@ +require "cases/helper" +require 'support/connection_helper' + +module ActiveRecord + class PostgresqlConnectionTest < ActiveRecord::TestCase + include ConnectionHelper + + class NonExistentTable < ActiveRecord::Base + end + + def setup + super + @subscriber = SQLSubscriber.new + @subscription = ActiveSupport::Notifications.subscribe('sql.active_record', @subscriber) + @connection = ActiveRecord::Base.connection + end + + def teardown + ActiveSupport::Notifications.unsubscribe(@subscription) + super + end + + def test_encoding + assert_not_nil @connection.encoding + end + + def test_collation + assert_not_nil @connection.collation + end + + def test_ctype + assert_not_nil @connection.ctype + end + + def test_default_client_min_messages + assert_equal "warning", @connection.client_min_messages + end + + # Ensure, we can set connection params using the example of Generic + # Query Optimizer (geqo). It is 'on' per default. + def test_connection_options + params = ActiveRecord::Base.connection_config.dup + params[:options] = "-c geqo=off" + NonExistentTable.establish_connection(params) + + # Verify the connection param has been applied. + expect = NonExistentTable.connection.query('show geqo').first.first + assert_equal 'off', expect + end + + def test_reset + @connection.query('ROLLBACK') + @connection.query('SET geqo TO off') + + # Verify the setting has been applied. + expect = @connection.query('show geqo').first.first + assert_equal 'off', expect + + @connection.reset! + + # Verify the setting has been cleared. + expect = @connection.query('show geqo').first.first + assert_equal 'on', expect + end + + def test_reset_with_transaction + @connection.query('ROLLBACK') + @connection.query('SET geqo TO off') + + # Verify the setting has been applied. + expect = @connection.query('show geqo').first.first + assert_equal 'off', expect + + @connection.query('BEGIN') + @connection.reset! + + # Verify the setting has been cleared. + expect = @connection.query('show geqo').first.first + assert_equal 'on', expect + end + + def test_tables_logs_name + @connection.tables('hello') + assert_equal 'SCHEMA', @subscriber.logged[0][1] + end + + def test_indexes_logs_name + @connection.indexes('items', 'hello') + assert_equal 'SCHEMA', @subscriber.logged[0][1] + end + + def test_table_exists_logs_name + @connection.table_exists?('items') + assert_equal 'SCHEMA', @subscriber.logged[0][1] + end + + def test_table_alias_length_logs_name + @connection.instance_variable_set("@table_alias_length", nil) + @connection.table_alias_length + assert_equal 'SCHEMA', @subscriber.logged[0][1] + end + + def test_current_database_logs_name + @connection.current_database + assert_equal 'SCHEMA', @subscriber.logged[0][1] + end + + def test_encoding_logs_name + @connection.encoding + assert_equal 'SCHEMA', @subscriber.logged[0][1] + end + + def test_schema_names_logs_name + @connection.schema_names + assert_equal 'SCHEMA', @subscriber.logged[0][1] + end + + def test_statement_key_is_logged + bindval = 1 + @connection.exec_query('SELECT $1::integer', 'SQL', [[nil, bindval]]) + name = @subscriber.payloads.last[:statement_name] + assert name + res = @connection.exec_query("EXPLAIN (FORMAT JSON) EXECUTE #{name}(#{bindval})") + plan = res.column_types['QUERY PLAN'].type_cast_from_database res.rows.first.first + assert_operator plan.length, :>, 0 + end + + # Must have PostgreSQL >= 9.2, or with_manual_interventions set to + # true for this test to run. + # + # When prompted, restart the PostgreSQL server with the + # "-m fast" option or kill the individual connection assuming + # you know the incantation to do that. + # To restart PostgreSQL 9.1 on OS X, installed via MacPorts, ... + # sudo su postgres -c "pg_ctl restart -D /opt/local/var/db/postgresql91/defaultdb/ -m fast" + def test_reconnection_after_actual_disconnection_with_verify + original_connection_pid = @connection.query('select pg_backend_pid()') + + # Sanity check. + assert @connection.active? + + if @connection.send(:postgresql_version) >= 90200 + secondary_connection = ActiveRecord::Base.connection_pool.checkout + secondary_connection.query("select pg_terminate_backend(#{original_connection_pid.first.first})") + ActiveRecord::Base.connection_pool.checkin(secondary_connection) + elsif ARTest.config['with_manual_interventions'] + puts 'Kill the connection now (e.g. by restarting the PostgreSQL ' + + 'server with the "-m fast" option) and then press enter.' + $stdin.gets + else + # We're not capable of terminating the backend ourselves, and + # we're not allowed to seek assistance; bail out without + # actually testing anything. + return + end + + @connection.verify! + + assert @connection.active? + + # If we get no exception here, then either we re-connected successfully, or + # we never actually got disconnected. + new_connection_pid = @connection.query('select pg_backend_pid()') + + assert_not_equal original_connection_pid, new_connection_pid, + "umm -- looks like you didn't break the connection, because we're still " + + "successfully querying with the same connection pid." + + # Repair all fixture connections so other tests won't break. + @fixture_connections.each do |c| + c.verify! + end + end + + def test_set_session_variable_true + run_without_connection do |orig_connection| + ActiveRecord::Base.establish_connection(orig_connection.deep_merge({:variables => {:debug_print_plan => true}})) + set_true = ActiveRecord::Base.connection.exec_query "SHOW DEBUG_PRINT_PLAN" + assert_equal set_true.rows, [["on"]] + end + end + + def test_set_session_variable_false + run_without_connection do |orig_connection| + ActiveRecord::Base.establish_connection(orig_connection.deep_merge({:variables => {:debug_print_plan => false}})) + set_false = ActiveRecord::Base.connection.exec_query "SHOW DEBUG_PRINT_PLAN" + assert_equal set_false.rows, [["off"]] + end + end + + def test_set_session_variable_nil + run_without_connection do |orig_connection| + # This should be a no-op that does not raise an error + ActiveRecord::Base.establish_connection(orig_connection.deep_merge({:variables => {:debug_print_plan => nil}})) + end + end + + def test_set_session_variable_default + run_without_connection do |orig_connection| + # This should execute a query that does not raise an error + ActiveRecord::Base.establish_connection(orig_connection.deep_merge({:variables => {:debug_print_plan => :default}})) + end + end + end +end |