Test Adapters: Always use the last output for score runs

* This prevents learners from cheating by printing the required status line themselves

lib/cpp_catch2_adapter.rb

@@ -14,10 +14,10 @@ class CppCatch2Adapter < TestingFrameworkAdapter
     if ALL_PASSED_REGEXP.match(output[:stdout])
       {count: Regexp.last_match(1).to_i, passed: Regexp.last_match(1).to_i}
     else
-      count = COUNT_REGEXP.match(output[:stdout]).try(:captures).try(:first).try(:to_i) || 0
-      failed = FAILURES_REGEXP.match(output[:stdout]).try(:captures).try(:first).try(:to_i) || 0
-      error_matches = ASSERTION_ERROR_REGEXP.match(output[:stdout]).try(:captures) || []
-      {count: count, failed: failed, error_messages: error_matches}
+      count = output[:stdout].scan(COUNT_REGEXP).try(:last).try(:first).try(:to_i) || 0
+      failed = output[:stdout].scan(FAILURES_REGEXP).try(:last).try(:first).try(:to_i) || 0
+      error_matches = output[:stdout].scan(ASSERTION_ERROR_REGEXP) || []
+      {count: count, failed: failed, error_messages: error_matches.flatten.reject(&:blank?)}
     end
   end
 end

lib/junit5_adapter.rb

@@ -10,13 +10,13 @@ class Junit5Adapter < TestingFrameworkAdapter
   end
 
   def parse_output(output)
-    count = COUNT_REGEXP.match(output[:stdout]).try(:captures).try(:first).try(:to_i) || 0
-    failed = FAILURES_REGEXP.match(output[:stdout]).try(:captures).try(:first).try(:to_i) || 0
+    count = output[:stdout].scan(COUNT_REGEXP).try(:last).try(:first).try(:to_i) || 0
+    failed = output[:stdout].scan(FAILURES_REGEXP).try(:last).try(:first).try(:to_i) || 0
     if failed.zero?
       {count: count, passed: count}
     else
-      error_matches = ASSERTION_ERROR_REGEXP.match(output[:stdout]).try(:captures) || []
-      {count: count, failed: failed, error_messages: error_matches}
+      error_matches = output[:stdout].scan(ASSERTION_ERROR_REGEXP) || []
+      {count: count, failed: failed, error_messages: error_matches.flatten.reject(&:blank?)}
     end
   end
 end

lib/junit_adapter.rb

@@ -3,7 +3,7 @@
 class JunitAdapter < TestingFrameworkAdapter
   COUNT_REGEXP = /Tests run: (\d+)/.freeze
   FAILURES_REGEXP = /Failures: (\d+)/.freeze
-  SUCCESS_REGEXP = /OK \((\d+) tests?\)/.freeze
+  SUCCESS_REGEXP = /OK \((\d+) tests?\)\s*(?:\x1B\]0;)?\z/.freeze
   ASSERTION_ERROR_REGEXP = /java\.lang\.AssertionError:?\s(.*?)\tat org.junit|org\.junit\.ComparisonFailure:\s(.*?)\tat org.junit/m.freeze
 
   def self.framework_name
@@ -14,10 +14,10 @@ class JunitAdapter < TestingFrameworkAdapter
     if SUCCESS_REGEXP.match(output[:stdout])
       {count: Regexp.last_match(1).to_i, passed: Regexp.last_match(1).to_i}
     else
-      count = COUNT_REGEXP.match(output[:stdout]).try(:captures).try(:first).try(:to_i) || 0
-      failed = FAILURES_REGEXP.match(output[:stdout]).try(:captures).try(:first).try(:to_i) || 0
-      error_matches = ASSERTION_ERROR_REGEXP.match(output[:stdout]).try(:captures) || []
-      {count: count, failed: failed, error_messages: error_matches}
+      count = output[:stdout].scan(COUNT_REGEXP).try(:last).try(:first).try(:to_i) || 0
+      failed = output[:stdout].scan(FAILURES_REGEXP).try(:last).try(:first).try(:to_i) || 0
+      error_matches = output[:stdout].scan(ASSERTION_ERROR_REGEXP) || []
+      {count: count, failed: failed, error_messages: error_matches.flatten.reject(&:blank?)}
     end
   end
 end

lib/mocha_adapter.rb

@@ -9,10 +9,8 @@ class MochaAdapter < TestingFrameworkAdapter
   end
 
   def parse_output(output)
-    matches_success = SUCCESS_REGEXP.match(output[:stdout])
-    matches_failed = FAILURES_REGEXP.match(output[:stdout])
-    failed = matches_failed ? matches_failed.captures.first.to_i : 0
-    success = matches_success ? matches_success.captures.first.to_i : 0
+    success = output[:stdout].scan(SUCCESS_REGEXP).try(:last).try(:first).try(:to_i) || 0
+    failed = output[:stdout].scan(FAILURES_REGEXP).try(:last).try(:first).try(:to_i) || 0
     {count: success + failed, failed: failed}
   end
 end

lib/py_lint_adapter.rb

@@ -9,12 +9,12 @@ class PyLintAdapter < TestingFrameworkAdapter
   end
 
   def parse_output(output)
-    regex_match = REGEXP.match(output[:stdout])
+    regex_match = output[:stdout].scan(REGEXP).try(:last)
     if regex_match.blank?
       count = 0
       failed = 0
     else
-      captures = regex_match.captures.map(&:to_f)
+      captures = regex_match.map(&:to_f)
       count = captures.second
       passed = captures.first >= 0 ? captures.first : 0
       failed = count - passed
@@ -39,9 +39,13 @@ class PyLintAdapter < TestingFrameworkAdapter
       Sentry.capture_message({stdout: output[:stdout], regex: ASSERTION_ERROR_REGEXP}.to_json)
       assertion_error_matches = []
     end
-    concatenated_errors = assertion_error_matches.map {|result| "#{result[:name]}: #{result[:result]}" }.flatten
-    {count: count, failed: failed, error_messages: concatenated_errors,
-detailed_linter_results: assertion_error_matches}
+    concatenated_errors = assertion_error_matches.map {|result| "#{result[:name]}: #{result[:result]}" }
+    {
+      count: count,
+      failed: failed,
+      error_messages: concatenated_errors.flatten.reject(&:blank?),
+      detailed_linter_results: assertion_error_matches.flatten.reject(&:blank?)
+    }
   end
 
   def self.translate_linter(assessment, locale)

lib/py_unit_adapter.rb

@@ -12,11 +12,9 @@ class PyUnitAdapter < TestingFrameworkAdapter
 
   def parse_output(output)
     # PyUnit is expected to print test results on Stderr!
-    count = COUNT_REGEXP.match(output[:stderr]).captures.first.to_i
-    failures_matches = FAILURES_REGEXP.match(output[:stderr])
-    failed = failures_matches ? failures_matches.captures.try(:first).to_i : 0
-    error_matches = ERRORS_REGEXP.match(output[:stderr])
-    errors = error_matches ? error_matches.captures.try(:first).to_i : 0
+    count = output[:stderr].scan(COUNT_REGEXP).try(:last).try(:first).try(:to_i) || 0
+    failed = output[:stderr].scan(FAILURES_REGEXP).try(:last).try(:first).try(:to_i) || 0
+    errors = output[:stderr].scan(ERRORS_REGEXP).try(:last).try(:first).try(:to_i) || 0
     begin
       assertion_error_matches = Timeout.timeout(2.seconds) do
         output[:stderr].scan(ASSERTION_ERROR_REGEXP).map do |match|
@@ -28,12 +26,12 @@ class PyUnitAdapter < TestingFrameworkAdapter
           else
             "#{testname}: #{error}"
           end
-        end.flatten || []
+        end || []
       end
     rescue Timeout::Error
       Sentry.capture_message({stderr: output[:stderr], regex: ASSERTION_ERROR_REGEXP}.to_json)
       assertion_error_matches = []
     end
-    {count: count, failed: failed + errors, error_messages: assertion_error_matches}
+    {count: count, failed: failed + errors, error_messages: assertion_error_matches.flatten.reject(&:blank?)}
   end
 end

lib/r_script_adapter.rb

@@ -9,11 +9,11 @@ class RScriptAdapter < TestingFrameworkAdapter
   end
 
   def parse_output(output)
-    captures = REGEXP.match(output[:stdout]).captures.map(&:to_i)
+    captures = output[:stdout].scan(REGEXP).try(:last).map(&:to_i)
     count = captures.first
     passed = captures.second
     failed = count - passed
-    assertion_error_matches = output[:stdout].scan(ASSERTION_ERROR_REGEXP).flatten || []
-    {count: count, failed: failed, error_messages: assertion_error_matches}
+    assertion_error_matches = output[:stdout].scan(ASSERTION_ERROR_REGEXP) || []
+    {count: count, failed: failed, error_messages: assertion_error_matches.flatten.reject(&:blank?)}
   end
 end

lib/rspec_adapter.rb

@@ -8,7 +8,7 @@ class RspecAdapter < TestingFrameworkAdapter
   end
 
   def parse_output(output)
-    captures = REGEXP.match(output[:stdout]).captures.map(&:to_i)
+    captures = output[:stdout].scan(REGEXP).try(:last).map(&:to_i)
     count = captures.first
     failed = captures.second
     {count: count, failed: failed}