last-modified, if-modified-since and if-unmodified-since are Dates. (#38)

Author: ioquatix

lib/protocol/http/headers.rb

@@ -241,8 +241,13 @@ def []= key, value
 				'set-cookie' => Header::SetCookie,
 				'cookie' => Header::Cookie,
 
+				# Date headers:
+				# These headers include a comma as part of the formatting so they can't be concatenated.
 				'date' => Header::Date,
 				'expires' => Header::Date,
+				'last-modified' => Header::Date,
+				'if-modified-since' => Header::Date,
+				'if-unmodified-since' => Header::Date,
 			}.tap{|hash| hash.default = Split}
 
 			# Delete all headers with the given key, and return the merged value.

test/protocol/http/header/date.rb

@@ -43,4 +43,23 @@
 			)
 		end
 	end
+	
+	describe Protocol::HTTP::Headers do
+		let(:headers) {
+			subject[[
+				['Date', 'Wed, 21 Oct 2015 07:28:00 GMT'],
+				['Expires', 'Wed, 21 Oct 2015 07:28:00 GMT'],
+				['Last-Modified', 'Wed, 21 Oct 2015 07:28:00 GMT'],
+				['If-Modified-Since', 'Wed, 21 Oct 2015 07:28:00 GMT'],
+				['If-Unmodified-Since', 'Wed, 21 Oct 2015 07:28:00 GMT']
+			]]
+		}
+		
+		it "should parse date headers" do
+			# When you convert headers into a hash, the policy is applied (i.e. conversion to Date instances):
+			headers.to_h.each do |key, value|
+				expect(value).to be_a(Protocol::HTTP::Header::Date)
+			end
+		end
+	end
 end