Make default content-type text/html

spec/context_spec.cr

@@ -1,6 +1,17 @@
 require "./spec_helper"
 
 describe "Context" do
+  it "sets content type" do
+    kemal = Kemal::Handler.new
+    kemal.add_route "GET", "/" do |env|
+      "Hello"
+    end
+    request = HTTP::Request.new("GET", "/")
+    io_with_context = create_request_and_return_io(kemal, request)
+    client_response = HTTP::Client::Response.from_io(io_with_context, decompress: false)
+    client_response.headers["Content-Type"].should eq("text/html")
+  end
+
   it "sets content type" do
     kemal = Kemal::Handler.new
     kemal.add_route "GET", "/" do |env|

src/kemal/handler.cr

@@ -12,6 +12,7 @@ class Kemal::Handler < HTTP::Handler
   end
 
   def call(context)
+    context.response.content_type = "text/html"
     response = process_request(context)
     response || call_next(context)
   end
@@ -31,6 +32,7 @@ class Kemal::Handler < HTTP::Handler
       route = lookup.payload as Route
       if route.match?(context.request)
         begin
+          context.response.content_type = "text/html"
           body = route.handler.call(context).to_s
           context.response.print body
           return context

src/kemal/view.cr

@@ -18,7 +18,8 @@ def render_403(context)
       </html>
   HTML
   context.response.status_code = 403
-  context.response.puts template
+  context.response.print template
+  context
 end
 
 # Template for 404 Not Found
@@ -40,7 +41,8 @@ def render_404(context)
       </html>
   HTML
   context.response.status_code = 404
-  context.response.puts template
+  context.response.print template
+  context
 end
 
 # Template for 500 Internal Server Error
@@ -62,5 +64,6 @@ def render_500(context, ex)
       </html>
   HTML
   context.response.status_code = 500
-  context.response.puts template
+  context.response.print template
+  context
 end