Do not fail homepage validation for 301 and 405.

lib/cocoapods/validator.rb

@@ -230,7 +230,20 @@ module Pod
       return unless homepage
 
       begin
+        resp = nil
+        loop do
           resp = ::REST.head(homepage)
+
+          if resp.status_code == 405
+            resp = ::REST.get(homepage)
+          end
+
+          if resp.status_code == 301
+            homepage = resp.headers['location'].first
+          else
+            break
+          end
+        end
       rescue
         warning "There was a problem validating the homepage."
         resp = nil

spec/unit/validator_spec.rb

@@ -108,6 +108,23 @@ module Pod
           @sut.validate
           @sut.results.map(&:to_s).first.should.match /There was a problem validating the homepage/
         end
+
+        it "does not fail if the homepage redirects" do
+          WebMock::API.stub_request(:head, /redirect/).to_return(
+            :status => 301, :headers => { 'Location' => 'http://banana-corp.local/found/' } )
+          WebMock::API.stub_request(:head, /found/).to_return( :status => 200 )
+          Specification.any_instance.stubs(:homepage).returns('http://banana-corp.local/redirect/')
+          @sut.validate
+          @sut.results.length.should.equal 0
+        end
+
+        it "does not fail if the homepage does not support HEAD" do
+          WebMock::API.stub_request(:head, /page/).to_return( :status => 405 )
+          WebMock::API.stub_request(:get, /page/).to_return( :status => 200 )
+          Specification.any_instance.stubs(:homepage).returns('http://banana-corp.local/page/')
+          @sut.validate
+          @sut.results.length.should.equal 0
+        end
       end
 
       it "respects the no clean option" do