require "./spec_helper" describe DB::Database do it "allows connection initialization" do cnn_setup = 0 DB.open "dummy://localhost:1027?initial_pool_size=2&max_pool_size=4&max_idle_pool_size=1" do |db| cnn_setup.should eq(0) db.setup_connection do |cnn| cnn_setup += 1 end cnn_setup.should eq(2) db.using_connection do cnn_setup.should eq(2) db.using_connection do cnn_setup.should eq(2) db.using_connection do cnn_setup.should eq(3) db.using_connection do cnn_setup.should eq(4) end # the pool didn't shrink no new initialization should be done next db.using_connection do cnn_setup.should eq(4) end end # the pool shrink 1. max_idle_pool_size=1 # after the previous end there where 2. db.using_connection do cnn_setup.should eq(4) # so now there will be a new connection created db.using_connection do cnn_setup.should eq(5) end end end end end end it "should allow creation of more statements than pool connections" do DB.open "dummy://localhost:1027?initial_pool_size=1&max_pool_size=2" do |db| db.build("query1").should be_a(DB::PoolPreparedStatement) db.build("query2").should be_a(DB::PoolPreparedStatement) db.build("query3").should be_a(DB::PoolPreparedStatement) end end it "should return same statement in pool per query" do with_dummy do |db| stmt = db.build("query1") db.build("query2").should_not eq(stmt) db.build("query1").should eq(stmt) end end it "should close pool statements when closing db" do stmt = uninitialized DB::PoolStatement with_dummy do |db| stmt = db.build("query1") end stmt.closed?.should be_true end it "should not reconnect if connection is lost and retry_attempts=0" do DummyDriver::DummyConnection.clear_connections DB.open "dummy://localhost:1027?initial_pool_size=1&max_pool_size=1&retry_attempts=0" do |db| db.exec("stmt1") DummyDriver::DummyConnection.connections.size.should eq(1) DummyDriver::DummyConnection.connections.first.disconnect! expect_raises DB::PoolRetryAttemptsExceeded do db.exec("stmt1") end DummyDriver::DummyConnection.connections.size.should eq(1) end end it "should reconnect if connection is lost and executing same statement" do DummyDriver::DummyConnection.clear_connections DB.open "dummy://localhost:1027?initial_pool_size=1&max_pool_size=1&retry_attempts=1" do |db| db.exec("stmt1") DummyDriver::DummyConnection.connections.size.should eq(1) DummyDriver::DummyConnection.connections.first.disconnect! db.exec("stmt1") DummyDriver::DummyConnection.connections.size.should eq(2) end end it "should allow new connections if pool can increased and retry is not allowed" do DummyDriver::DummyConnection.clear_connections DB.open "dummy://localhost:1027?initial_pool_size=1&max_pool_size=2&retry_attempts=0" do |db| db.query("stmt1") DummyDriver::DummyConnection.connections.size.should eq(1) db.query("stmt1") DummyDriver::DummyConnection.connections.size.should eq(2) end end it "should not return connection to pool if checkout explicitly" do DummyDriver::DummyConnection.clear_connections DB.open "dummy://localhost:1027?initial_pool_size=1&max_pool_size=1&retry_attempts=0" do |db| the_cnn = uninitialized DB::Connection db.using_connection do |cnn| the_cnn = cnn db.pool.is_available?(cnn).should be_false 3.times do cnn.exec("stmt1") db.pool.is_available?(cnn).should be_false end end db.pool.is_available?(the_cnn).should be_true end end it "should checkout different connections until they are released" do DummyDriver::DummyConnection.clear_connections DB.open "dummy://localhost:1027?initial_pool_size=1&max_pool_size=2&retry_attempts=0" do |db| the_first_cnn = uninitialized DB::Connection the_second_cnn = uninitialized DB::Connection the_first_cnn = db.checkout the_second_cnn = db.checkout the_second_cnn.should_not eq(the_first_cnn) db.pool.is_available?(the_first_cnn).should be_false db.pool.is_available?(the_second_cnn).should be_false the_first_cnn.release db.pool.is_available?(the_first_cnn).should be_true db.pool.is_available?(the_second_cnn).should be_false db.checkout.should eq(the_first_cnn) the_first_cnn.release the_second_cnn.release end end it "should not return explicit checked out connections to the pool after query" do DummyDriver::DummyConnection.clear_connections DB.open "dummy://localhost:1027?initial_pool_size=1&max_pool_size=2&retry_attempts=0" do |db| cnn = db.checkout cnn.query_all("1", as: String) db.pool.is_available?(cnn).should be_false cnn.release db.pool.is_available?(cnn).should be_true end end it "should return connection to the pool if prepared statement is unable to be built" do connection = uninitialized DB::Connection with_dummy "dummy://localhost:1027?initial_pool_size=1" do |db| connection = DummyDriver::DummyConnection.connections.first expect_raises DB::Error do db.prepared.exec("syntax error") end db.pool.is_available?(connection).should be_true end end it "should return connection to the pool if unprepared statement is unable to be built" do connection = uninitialized DB::Connection with_dummy "dummy://localhost:1027?initial_pool_size=1" do |db| connection = DummyDriver::DummyConnection.connections.first expect_raises DB::Error do db.unprepared.exec("syntax error") end db.pool.is_available?(connection).should be_true end end describe "prepared_statements connection option" do it "defaults to true" do with_dummy "dummy://localhost:1027" do |db| db.prepared_statements?.should be_true end end it "can be set to false" do with_dummy "dummy://localhost:1027?prepared_statements=false" do |db| db.prepared_statements?.should be_false end end it "is copied to connections (false)" do with_dummy "dummy://localhost:1027?prepared_statements=false&initial_pool_size=1" do |db| connection = DummyDriver::DummyConnection.connections.first connection.prepared_statements?.should be_false end end it "is copied to connections (true)" do with_dummy "dummy://localhost:1027?prepared_statements=true&initial_pool_size=1" do |db| connection = DummyDriver::DummyConnection.connections.first connection.prepared_statements?.should be_true end end it "should build prepared statements if true" do with_dummy "dummy://localhost:1027?prepared_statements=true" do |db| db.build("the query").should be_a(DB::PoolPreparedStatement) end end it "should build unprepared statements if false" do with_dummy "dummy://localhost:1027?prepared_statements=false" do |db| db.build("the query").should be_a(DB::PoolUnpreparedStatement) end end it "should be overrided by dsl" do with_dummy "dummy://localhost:1027?prepared_statements=true" do |db| stmt = db.unprepared.query("the query").statement.as(DummyDriver::DummyStatement) stmt.prepared?.should be_false end with_dummy "dummy://localhost:1027?prepared_statements=false" do |db| stmt = db.prepared.query("the query").statement.as(DummyDriver::DummyStatement) stmt.prepared?.should be_true end end end describe "unprepared statements in pool" do it "creating statements should not create new connections" do with_dummy "dummy://localhost:1027?initial_pool_size=1" do |db| stmt1 = db.unprepared.build("query1") stmt2 = db.unprepared.build("query2") DummyDriver::DummyConnection.connections.size.should eq(1) end end it "simultaneous statements should go to different connections" do with_dummy "dummy://localhost:1027?initial_pool_size=1" do |db| rs1 = db.unprepared.query("query1") rs2 = db.unprepared.query("query2") rs1.statement.connection.should_not eq(rs2.statement.connection) DummyDriver::DummyConnection.connections.size.should eq(2) end end it "sequential statements should go to different connections" do with_dummy "dummy://localhost:1027?initial_pool_size=1" do |db| rs1 = db.unprepared.query("query1") rs1.close rs2 = db.unprepared.query("query2") rs2.close rs1.statement.connection.should eq(rs2.statement.connection) DummyDriver::DummyConnection.connections.size.should eq(1) end end end end