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require File.expand_path('../../test_helper', __FILE__)
require 'mocha/state_machine'
class StateMachineTest < Test::Unit::TestCase
include Mocha
def test_should_initially_be_in_no_state
state_machine = StateMachine.new('name')
any_state.each do |state|
assert !state_machine.is(state).active?
assert state_machine.is_not(state).active?
end
end
def test_should_be_able_to_enter_a_state
state_machine = StateMachine.new('name')
state = 'A'
other_states = any_state.reject { |s| s == state }
state_machine.is(state).activate
assert state_machine.is(state).active?
assert !state_machine.is_not(state).active?
other_states.each do |s|
assert !state_machine.is(s).active?
assert state_machine.is_not(s).active?
end
end
def test_should_be_able_to_change_state
state_machine = StateMachine.new('name')
state = 'B'
other_states = any_state.reject { |s| s == state }
state_machine.is('A').activate
state_machine.is(state).activate
assert state_machine.is(state).active?
assert !state_machine.is_not(state).active?
other_states.each do |s|
assert !state_machine.is(s).active?
assert state_machine.is_not(s).active?
end
end
def test_should_be_put_into_an_initial_state
state_machine = StateMachine.new('name')
initial_state = 'A'
other_states = any_state.reject { |s| s == initial_state }
state_machine.starts_as(initial_state)
assert state_machine.is(initial_state).active?
assert !state_machine.is_not(initial_state).active?
other_states.each do |state|
assert !state_machine.is(state).active?
assert state_machine.is_not(state).active?
end
end
def test_should_be_put_into_a_new_state
next_state = 'B'
other_states = any_state.reject { |s| s == next_state }
state_machine = StateMachine.new('name').starts_as('A')
state_machine.become(next_state)
assert state_machine.is(next_state).active?
assert !state_machine.is_not(next_state).active?
other_states.each do |state|
assert !state_machine.is(state).active?
assert state_machine.is_not(state).active?
end
end
def test_should_describe_itself_as_name_and_current_state
state_machine = StateMachine.new('state_machine_name')
assert_equal 'state_machine_name has no current state', state_machine.mocha_inspect
inspectable_state = Class.new { define_method(:mocha_inspect) { "'inspectable_state'" } }.new
state_machine.is(inspectable_state).activate
assert_equal "state_machine_name is 'inspectable_state'", state_machine.mocha_inspect
end
def test_should_have_self_describing_states
state_machine = StateMachine.new('state_machine_name')
inspectable_state = Class.new { define_method(:mocha_inspect) { "'inspectable_state'" } }.new
assert_equal "state_machine_name is 'inspectable_state'", state_machine.is(inspectable_state).mocha_inspect
assert_equal "state_machine_name is not 'inspectable_state'", state_machine.is_not(inspectable_state).mocha_inspect
end
def any_state
%w(A B C D)
end
end
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