Improve PyLint RegEx to match single lines

* Also return more detailed results for further analysis

lib/py_lint_adapter.rb

@@ -1,6 +1,6 @@
 class PyLintAdapter < TestingFrameworkAdapter
   REGEXP = /Your code has been rated at (-?\d+\.?\d*)\/(\d+\.?\d*)/
-  ASSERTION_ERROR_REGEXP = /^.*?\(.*?,\ (.*?),.*?\)\ (.*?)$/m
+  ASSERTION_ERROR_REGEXP = /^.*?\([^,]*?,\ ([^,]*?),[^,]*?\)\ (.*?)$/
 
   def self.framework_name
     'PyLint'
@@ -14,21 +14,22 @@ class PyLintAdapter < TestingFrameworkAdapter
     else
       captures = regex_match.captures.map(&:to_f)
       count = captures.second
-      passed = captures.first
+      passed = captures.first >= 0 ? captures.first : 0
       failed = count - passed
     end
 
     begin
       assertion_error_matches = Timeout.timeout(2.seconds) do
-        output[:stdout].scan(ASSERTION_ERROR_REGEXP).map { |match|
+        output[:stdout].scan(ASSERTION_ERROR_REGEXP).map do |match|
           test = match.first.strip
           description = match.second.strip
-          "#{test}: #{description}"
-        }.flatten || []
+          {test: test, description: description}
+        end || []
       end
     rescue Timeout::Error
       assertion_error_matches = []
     end
-    {count: count, failed: failed, error_messages: assertion_error_matches}
+    concatenated_errors = assertion_error_matches.map { |result| "#{result[:test]}: #{result[:description]}" }.flatten
+    {count: count, failed: failed, error_messages: concatenated_errors, detailed_linter_results: assertion_error_matches}
   end
 end