Show executed queries when assert_sql assertion fails [#2573 state:resolved]

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

activerecord/lib/active_record/test_case.rb

@@ -20,7 +20,7 @@ def assert_sql(*patterns_to_match)
       patterns_to_match.each do |pattern|
         failed_patterns << pattern unless $queries_executed.any?{ |sql| pattern === sql }
       end
-      assert failed_patterns.empty?, "Query pattern(s) #{failed_patterns.map(&:inspect).join(', ')} not found."
+      assert failed_patterns.empty?, "Query pattern(s) #{failed_patterns.map(&:inspect).join(', ')} not found.#{$queries_executed.size == 0 ? '' : "\nQueries:\n#{$queries_executed.join("\n")}"}"
     end
 
     def assert_queries(num = 1)