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