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-rw-r--r--actionpack/test/dispatch/middleware_stack_test.rb90
1 files changed, 90 insertions, 0 deletions
diff --git a/actionpack/test/dispatch/middleware_stack_test.rb b/actionpack/test/dispatch/middleware_stack_test.rb
new file mode 100644
index 0000000000..f4e18308ae
--- /dev/null
+++ b/actionpack/test/dispatch/middleware_stack_test.rb
@@ -0,0 +1,90 @@
+require 'abstract_unit'
+
+class MiddlewareStackTest < ActiveSupport::TestCase
+ class FooMiddleware; end
+ class BarMiddleware; end
+ class BazMiddleware; end
+
+ def setup
+ @stack = ActionDispatch::MiddlewareStack.new
+ @stack.use FooMiddleware
+ @stack.use BarMiddleware
+ end
+
+ test "use should push middleware as class onto the stack" do
+ assert_difference "@stack.size" do
+ @stack.use BazMiddleware
+ end
+ assert_equal BazMiddleware, @stack.last.klass
+ end
+
+ test "use should push middleware as a string onto the stack" do
+ assert_difference "@stack.size" do
+ @stack.use "MiddlewareStackTest::BazMiddleware"
+ end
+ assert_equal BazMiddleware, @stack.last.klass
+ end
+
+ test "use should push middleware as a symbol onto the stack" do
+ assert_difference "@stack.size" do
+ @stack.use :"MiddlewareStackTest::BazMiddleware"
+ end
+ assert_equal BazMiddleware, @stack.last.klass
+ end
+
+ test "use should push middleware class with arguments onto the stack" do
+ assert_difference "@stack.size" do
+ @stack.use BazMiddleware, true, :foo => "bar"
+ end
+ assert_equal BazMiddleware, @stack.last.klass
+ assert_equal([true, {:foo => "bar"}], @stack.last.args)
+ end
+
+ test "insert inserts middleware at the integer index" do
+ @stack.insert(1, BazMiddleware)
+ assert_equal BazMiddleware, @stack[1].klass
+ end
+
+ test "insert_after inserts middleware after the integer index" do
+ @stack.insert_after(1, BazMiddleware)
+ assert_equal BazMiddleware, @stack[2].klass
+ end
+
+ test "insert_before inserts middleware before another middleware class" do
+ @stack.insert_before(BarMiddleware, BazMiddleware)
+ assert_equal BazMiddleware, @stack[1].klass
+ end
+
+ test "insert_after inserts middleware after another middleware class" do
+ @stack.insert_after(BarMiddleware, BazMiddleware)
+ assert_equal BazMiddleware, @stack[2].klass
+ end
+
+ test "swaps one middleware out for another" do
+ assert_equal FooMiddleware, @stack[0].klass
+ @stack.swap(FooMiddleware, BazMiddleware)
+ assert_equal BazMiddleware, @stack[0].klass
+ end
+
+ test "active returns all only enabled middleware" do
+ assert_no_difference "@stack.active.size" do
+ assert_difference "@stack.size" do
+ @stack.use BazMiddleware, :if => lambda { false }
+ end
+ end
+ end
+
+ test "lazy evaluates middleware class" do
+ assert_difference "@stack.size" do
+ @stack.use lambda { BazMiddleware }
+ end
+ assert_equal BazMiddleware, @stack.last.klass
+ end
+
+ test "lazy evaluates middleware arguments" do
+ assert_difference "@stack.size" do
+ @stack.use BazMiddleware, lambda { :foo }
+ end
+ assert_equal [:foo], @stack.last.send(:build_args)
+ end
+end