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require 'abstract_unit'
class DispatcherTest < Test::Unit::TestCase
class Foo
cattr_accessor :a, :b
end
class DummyApp
def call(env)
[200, {}, 'response']
end
end
def setup
Foo.a, Foo.b = 0, 0
ActionDispatch::Callbacks.reset_callbacks(:prepare)
ActionDispatch::Callbacks.reset_callbacks(:call)
end
def test_prepare_callbacks_with_cache_classes
a = b = c = nil
ActionDispatch::Callbacks.to_prepare { |*args| a = b = c = 1 }
ActionDispatch::Callbacks.to_prepare { |*args| b = c = 2 }
ActionDispatch::Callbacks.to_prepare { |*args| c = 3 }
# Ensure to_prepare callbacks are not run when defined
assert_nil a || b || c
# Run callbacks
dispatch
assert_equal 1, a
assert_equal 2, b
assert_equal 3, c
# Make sure they are only run once
a = b = c = nil
dispatch
assert_nil a || b || c
end
def test_prepare_callbacks_without_cache_classes
a = b = c = nil
ActionDispatch::Callbacks.to_prepare { |*args| a = b = c = 1 }
ActionDispatch::Callbacks.to_prepare { |*args| b = c = 2 }
ActionDispatch::Callbacks.to_prepare { |*args| c = 3 }
# Ensure to_prepare callbacks are not run when defined
assert_nil a || b || c
# Run callbacks
dispatch(false)
assert_equal 1, a
assert_equal 2, b
assert_equal 3, c
# Make sure they are run again
a = b = c = nil
dispatch(false)
assert_equal 1, a
assert_equal 2, b
assert_equal 3, c
end
def test_to_prepare_with_identifier_replaces
ActionDispatch::Callbacks.to_prepare(:unique_id) { |*args| Foo.a, Foo.b = 1, 1 }
ActionDispatch::Callbacks.to_prepare(:unique_id) { |*args| Foo.a = 2 }
dispatch
assert_equal 2, Foo.a
assert_equal 0, Foo.b
end
def test_before_and_after_callbacks
ActionDispatch::Callbacks.before { |*args| Foo.a += 1; Foo.b += 1 }
ActionDispatch::Callbacks.after { |*args| Foo.a += 1; Foo.b += 1 }
dispatch
assert_equal 2, Foo.a
assert_equal 2, Foo.b
dispatch
assert_equal 4, Foo.a
assert_equal 4, Foo.b
end
private
def dispatch(cache_classes = true, &block)
@dispatcher ||= ActionDispatch::Callbacks.new(block || DummyApp.new, !cache_classes)
@dispatcher.call({'rack.input' => StringIO.new('')})
end
end
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