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rails--rails/activerecord/test/cases/state_machine_test.rb

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1,003 B
Ruby

require 'cases/helper'
require 'models/traffic_light'
class StateMachineTest < ActiveRecord::TestCase
def setup
@light = TrafficLight.create!
end
test "states initial state" do
assert @light.off?
assert_equal :off, @light.current_state
end
test "transition to a valid state" do
@light.reset
assert @light.red?
assert_equal :red, @light.current_state
@light.green_on
assert @light.green?
assert_equal :green, @light.current_state
end
test "transition does not persist state" do
@light.reset
assert_equal :red, @light.current_state
@light.reload
assert_equal "off", @light.state
end
test "transition does persists state" do
@light.reset!
assert_equal :red, @light.current_state
@light.reload
assert_equal "red", @light.state
end
test "transition to an invalid state" do
assert_raise(ActiveModel::StateMachine::InvalidTransition) { @light.yellow_on }
assert_equal :off, @light.current_state
end
end