Only / Exclude Paths in Middleware (#245)

Add only / exclude paths in Middlewares

spec/handler_spec.cr

@@ -1,12 +1,52 @@
 require "./spec_helper"
 
-class CustomTestHandler < HTTP::Handler
+class CustomTestHandler < Kemal::Handler
   def call(env)
     env.response << "Kemal"
     call_next env
   end
 end
 
+class OnlyHandler < Kemal::Handler
+  only ["/only"]
+
+  def call(env)
+    return call_next(env) unless only_match?(env)
+    env.response.print "Only"
+    call_next env
+  end
+end
+
+class ExcludeHandler < Kemal::Handler
+  exclude ["/exclude"]
+
+  def call(env)
+    return call_next(env) if exclude_match?(env)
+    env.response.print "Exclude"
+    call_next env
+  end
+end
+
+class PostOnlyHandler < Kemal::Handler
+  only ["/only", "/route1", "/route2"], "POST"
+
+  def call(env)
+    return call_next(env) unless only_match?(env)
+    env.response.print "Only"
+    call_next env
+  end
+end
+
+class PostExcludeHandler < Kemal::Handler
+  exclude ["/exclude"], "POST"
+
+  def call(env)
+    return call_next(env) if exclude_match?(env)
+    env.response.print "Exclude"
+    call_next env
+  end
+end
+
 describe "Handler" do
   it "adds custom handler before before_*" do
     filter_middleware = Kemal::Middleware::Filter.new
@@ -27,4 +67,57 @@ describe "Handler" do
     client_response.status_code.should eq(200)
     client_response.body.should eq("Kemal is so Great")
   end
+
+  it "runs specified only_routes in middleware" do
+    get "/only" do |env|
+      "Get"
+    end
+    add_handler OnlyHandler.new
+    request = HTTP::Request.new("GET", "/only")
+    client_response = call_request_on_app(request)
+    client_response.body.should eq "OnlyGet"
+  end
+
+  it "doesn't run specified exclude_routes in middleware" do
+    get "/" do |env|
+      "Get"
+    end
+    get "/exclude" do
+      "Exclude"
+    end
+    add_handler ExcludeHandler.new
+    request = HTTP::Request.new("GET", "/")
+    client_response = call_request_on_app(request)
+    client_response.body.should eq "ExcludeGet"
+  end
+
+  it "runs specified only_routes with method in middleware" do
+    post "/only" do
+      "Post"
+    end
+    get "/only" do
+      "Get"
+    end
+    add_handler PostOnlyHandler.new
+    request = HTTP::Request.new("POST", "/only")
+    client_response = call_request_on_app(request)
+    client_response.body.should eq "OnlyPost"
+  end
+
+  it "doesn't run specified exclude_routes with method in middleware" do
+    post "/exclude" do
+      "Post"
+    end
+    post "/only" do
+      "Post"
+    end
+    add_handler PostOnlyHandler.new
+    request = HTTP::Request.new("POST", "/only")
+    client_response = call_request_on_app(request)
+    client_response.body.should eq "OnlyPost"
+    add_handler PostExcludeHandler.new
+    request = HTTP::Request.new("POST", "/only")
+    client_response = call_request_on_app(request)
+    client_response.body.should eq "OnlyExcludePost"
+  end
 end