43 lines
1003 B
Ruby
43 lines
1003 B
Ruby
require 'cases/helper'
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require 'models/traffic_light'
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class StateMachineTest < ActiveRecord::TestCase
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def setup
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@light = TrafficLight.create!
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end
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test "states initial state" do
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assert @light.off?
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assert_equal :off, @light.current_state
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end
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test "transition to a valid state" do
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@light.reset
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assert @light.red?
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assert_equal :red, @light.current_state
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@light.green_on
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assert @light.green?
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assert_equal :green, @light.current_state
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end
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test "transition does not persist state" do
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@light.reset
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assert_equal :red, @light.current_state
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@light.reload
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assert_equal "off", @light.state
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end
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test "transition does persists state" do
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@light.reset!
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assert_equal :red, @light.current_state
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@light.reload
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assert_equal "red", @light.state
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end
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test "transition to an invalid state" do
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assert_raise(ActiveModel::StateMachine::InvalidTransition) { @light.yellow_on }
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assert_equal :off, @light.current_state
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end
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end
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