Fixed the test edit page

src/models/test.rb

@@ -7,4 +7,8 @@ class Test < Sequel::Model
   many_to_one :hardware
   many_to_many :benchmarks
 
+  def has_benchmark(benchmark_id)
+    return benchmarks_dataset.where(Sequel[:benchmarks][:id] => benchmark_id).any?
+  end
+
 end

src/routes/test.rb

@@ -65,9 +65,25 @@ class GameData < Sinatra::Base
 
     tst.update(
       name: params[:test_name],
-      type: params[:test_type]
+      hardware_id: params[:test_hardware],
+      description: params[:test_description]
     )
 
+    # create an array of the selected benchmarks
+    selected_benchmarks = Array(params[:test_benchmarks])
+    # remove benchmarks no longer associated with the test
+    tst.benchmarks.each do |b|
+      if not selected_benchmarks.include?(b)
+        tst.remove_benchmark(b)
+      end
+    end
+    # associate the benchmarks to the test
+    selected_benchmarks.each do |b|
+      if not tst.has_benchmark(b)
+        tst.add_benchmark(b)
+      end
+    end
+
     redirect "/test/#{tst.id}"
   end