1 files changed, 53 insertions, 0 deletions
diff --git a/activerecord/test/active_record/test_case.rb b/activerecord/test/active_record/test_case.rb
new file mode 100644
index 0000000000..5398a14fc6
--- /dev/null
+++ b/activerecord/test/active_record/test_case.rb
@@ -0,0 +1,53 @@
+module ActiveRecord
+  # = Active Record Test Case
+  #
+  # Defines some test assertions to test against SQL queries.
+  class TestCase < ActiveSupport::TestCase #:nodoc:
+    setup :cleanup_identity_map
+
+    def setup
+      cleanup_identity_map
+    end
+
+    def cleanup_identity_map
+      ActiveRecord::IdentityMap.clear
+    end
+
+    def assert_date_from_db(expected, actual, message = nil)
+      # SybaseAdapter doesn't have a separate column type just for dates,
+      # so the time is in the string and incorrectly formatted
+      if current_adapter?(:SybaseAdapter)
+        assert_equal expected.to_s, actual.to_date.to_s, message
+      else
+        assert_equal expected.to_s, actual.to_s, message
+      end
+    end
+
+    def assert_sql(*patterns_to_match)
+      ActiveRecord::SQLCounter.log = []
+      yield
+      ActiveRecord::SQLCounter.log
+    ensure
+      failed_patterns = []
+      patterns_to_match.each do |pattern|
+        failed_patterns << pattern unless ActiveRecord::SQLCounter.log.any?{ |sql| pattern === sql }
+      end
+      assert failed_patterns.empty?, "Query pattern(s) #{failed_patterns.map{ |p| p.inspect }.join(', ')} not found.#{ActiveRecord::SQLCounter.log.size == 0 ? '' : "\nQueries:\n#{ActiveRecord::SQLCounter.log.join("\n")}"}"
+    end
+
+    def assert_queries(num = 1)
+      ActiveRecord::SQLCounter.log = []
+      yield
+    ensure
+      assert_equal num, ActiveRecord::SQLCounter.log.size, "#{ActiveRecord::SQLCounter.log.size} instead of #{num} queries were executed.#{ActiveRecord::SQLCounter.log.size == 0 ? '' : "\nQueries:\n#{ActiveRecord::SQLCounter.log.join("\n")}"}"
+    end
+
+    def assert_no_queries(&block)
+      prev_ignored_sql = ActiveRecord::SQLCounter.ignored_sql
+      ActiveRecord::SQLCounter.ignored_sql = []
+      assert_queries(0, &block)
+    ensure
+      ActiveRecord::SQLCounter.ignored_sql = prev_ignored_sql
+    end
+  end
+end