Fixed a lot of linter warnings

src/models/benchmark.rb

@@ -1,3 +1,6 @@
+# frozen_string_literal: true
+
+# Benchmark - database model for PC benchmarks
 class Benchmark < Sequel::Model
 
   one_to_many :tests

src/models/hardware.rb

@@ -1,3 +1,6 @@
+# frozen_string_literal: true
+
+# Hardware - database model for PC hardware
 class Hardware < Sequel::Model(:hardware)
 
   one_to_many :tests

src/models/init.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'hardware'
 require_relative 'benchmark'
 require_relative 'result'

src/models/result.rb

@@ -1,9 +1,12 @@
+# frozen_string_literal: true
+
+# Result - database model for benchmark results
 class Result < Sequel::Model
 
   many_to_one :test
 
-  def formatted_score()
-    return self.score
+  def formatted_score
+    return @score
   end
 
 end

src/models/test.rb

@@ -1,27 +1,30 @@
+# frozen_string_literal: true
+
+# Test - database model for PC hardware tests
 class Test < Sequel::Model
 
-  one_to_many :results     # link Test model to its related results
-  many_to_one :benchmark  # link Test model back to its benchmark
-  many_to_one :hardware    # link Test model back to hardware used in test
+  one_to_many :results # link Test model to its related results
+  many_to_one :benchmark # link Test model back to its benchmark
+  many_to_one :hardware # link Test model back to hardware used in test
 
   # formats the name of the test for display in the web UI
-  def formatted_name()
-    return "#{self.date_tag} - #{self.hardware.name} / #{self.benchmark.name}"
+  def formatted_name
+    return "#{@date_tag} - #{@hardware.name} / #{@benchmark.name}"
   end
 
   # formats the name of the test for use in a graph
-  def graph_name()
-    return "#{self.hardware.name} (#{self.date_tag})"
+  def graph_name
+    return "#{@hardware.name} (#{@date_tag})"
   end
 
   # determines whether the test has enough results to fulfill the requirement
-  def valid?()
-    return (self.results.length >= $conf.get('testing.minimum_results_required'))
+  def valid?
+    return (@results.length >= $conf.get('testing.minimum_results_required'))
   end
 
   # determines how many results are still missing for a test
-  def missing_results()
-    return ($conf.get('testing.minimum_results_required') - self.results.length)
+  def missing_results
+    return ($conf.get('testing.minimum_results_required') - @results.length)
   end
 
 end