added compression plugin and tests (for now, failing)

lib/httpx/plugins/compression.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module HTTPX
+  module Plugins
+    module Compression
+    end
+    register_plugin :compression, Compression
+  end
+end

test/http1_test.rb

@@ -12,7 +12,9 @@ class HTTP1Test < HTTPTest
   include Headers 
   include ResponseBody 
   include IO 
-  
+
+  include Plugins::Compression
+
   private
 
   def origin

test/http2_test.rb

@@ -11,6 +11,8 @@ class HTTP2Test < HTTPTest
   include ResponseBody 
   include IO 
   
+  include Plugins::Compression
+
   private
 
   def origin

test/support/requests/plugins/compression.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module Requests
+  module Plugins
+    module Compression 
+      def test_plugin_compression_gzip
+        client = HTTPX.plugin(:compression)
+        uri = build_uri("/gzip")
+        response = client.get(uri)
+        verify_status(response.status, 200)
+        verify_body_length(response)
+        body = json_body(response)
+        assert body["gzipped"], "response should be gzipped"
+      end
+
+      def test_plugin_compression_deflate
+        client = HTTPX.plugin(:compression)
+        uri = build_uri("/deflate")
+        response = client.get(uri)
+        verify_status(response.status, 200)
+        verify_body_length(response)
+        assert body["deflated"], "response should be gzipped"
+      end
+
+      def test_plugin_compression_custom
+
+      end
+
+    end
+  end
+end