118 lines
3.5 KiB
Ruby
118 lines
3.5 KiB
Ruby
require 'abstract_unit'
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class MiddlewareStackTest < ActiveSupport::TestCase
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class FooMiddleware; end
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class BarMiddleware; end
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class BazMiddleware; end
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class BlockMiddleware
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attr_reader :block
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def initialize(&block)
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@block = block
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end
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end
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def setup
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@stack = ActionDispatch::MiddlewareStack.new
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@stack.use FooMiddleware
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@stack.use BarMiddleware
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end
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test "use should push middleware as class onto the stack" do
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assert_difference "@stack.size" do
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@stack.use BazMiddleware
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end
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assert_equal BazMiddleware, @stack.last.klass
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end
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test "use should push middleware as a string onto the stack" do
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assert_difference "@stack.size" do
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@stack.use "MiddlewareStackTest::BazMiddleware"
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end
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assert_equal BazMiddleware, @stack.last.klass
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end
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test "use should push middleware as a symbol onto the stack" do
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assert_difference "@stack.size" do
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@stack.use :"MiddlewareStackTest::BazMiddleware"
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end
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assert_equal BazMiddleware, @stack.last.klass
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end
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test "use should push middleware class with arguments onto the stack" do
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assert_difference "@stack.size" do
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@stack.use BazMiddleware, true, :foo => "bar"
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end
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assert_equal BazMiddleware, @stack.last.klass
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assert_equal([true, {:foo => "bar"}], @stack.last.args)
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end
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test "use should push middleware class with block arguments onto the stack" do
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proc = Proc.new {}
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assert_difference "@stack.size" do
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@stack.use(BlockMiddleware, &proc)
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end
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assert_equal BlockMiddleware, @stack.last.klass
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assert_equal proc, @stack.last.block
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end
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test "insert inserts middleware at the integer index" do
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@stack.insert(1, BazMiddleware)
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assert_equal BazMiddleware, @stack[1].klass
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end
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test "insert_after inserts middleware after the integer index" do
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@stack.insert_after(1, BazMiddleware)
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assert_equal BazMiddleware, @stack[2].klass
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end
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test "insert_before inserts middleware before another middleware class" do
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@stack.insert_before(BarMiddleware, BazMiddleware)
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assert_equal BazMiddleware, @stack[1].klass
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end
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test "insert_after inserts middleware after another middleware class" do
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@stack.insert_after(BarMiddleware, BazMiddleware)
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assert_equal BazMiddleware, @stack[2].klass
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end
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test "swaps one middleware out for another" do
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assert_equal FooMiddleware, @stack[0].klass
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@stack.swap(FooMiddleware, BazMiddleware)
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assert_equal BazMiddleware, @stack[0].klass
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end
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test "swaps one middleware out for same middleware class" do
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assert_equal FooMiddleware, @stack[0].klass
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@stack.swap(FooMiddleware, FooMiddleware, Proc.new { |env| [500, {}, ['error!']] })
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assert_equal FooMiddleware, @stack[0].klass
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end
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test "unshift adds a new middleware at the beginning of the stack" do
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@stack.unshift :"MiddlewareStackTest::BazMiddleware"
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assert_equal BazMiddleware, @stack.first.klass
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end
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test "raise an error on invalid index" do
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assert_raise RuntimeError do
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@stack.insert("HiyaMiddleware", BazMiddleware)
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end
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assert_raise RuntimeError do
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@stack.insert_after("HiyaMiddleware", BazMiddleware)
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end
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end
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test "lazy evaluates middleware class" do
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assert_difference "@stack.size" do
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@stack.use "MiddlewareStackTest::BazMiddleware"
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end
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assert_equal BazMiddleware, @stack.last.klass
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end
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test "lazy compares so unloaded constants are not loaded" do
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@stack.use "UnknownMiddleware"
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@stack.use :"MiddlewareStackTest::BazMiddleware"
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assert @stack.include?("::MiddlewareStackTest::BazMiddleware")
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end
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end
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