test cases for bind parameter logging

activerecord/test/cases/bind_parameter_test.rb

+require 'cases/helper'
+require 'models/topic'
+
+module ActiveRecord
+  class BindParameterTest < ActiveRecord::TestCase
+    class LogListener
+      attr_accessor :calls
+
+      def initialize
+        @calls = []
+      end
+
+      def call(*args)
+        calls << args
+      end
+    end
+
+    fixtures :topics
+
+    def setup
+      super
+      @connection = ActiveRecord::Base.connection
+      @listener   = LogListener.new
+      @pk         = Topic.columns.find { |c| c.primary }
+      ActiveSupport::Notifications.subscribe('sql.active_record', @listener)
+    end
+
+    def teardown
+      ActiveSupport::Notifications.unsubscribe(@listener)
+    end
+
+    def test_binds_are_logged
+      # FIXME: use skip with minitest
+      return unless @connection.supports_statement_cache?
+
+      sub   = @connection.substitute_for(@pk, [])
+      binds = [[@pk, 1]]
+      sql   = "select * from topics where id = #{sub}"
+
+      @connection.exec_query(sql, 'SQL', binds)
+
+      message = @listener.calls.find { |args| args[4][:sql] == sql }
+      assert_equal binds, message[4][:binds]
+    end
+
+    def test_find_one_uses_binds
+      # FIXME: use skip with minitest
+      return unless @connection.supports_statement_cache?
+
+      Topic.find(1)
+      binds = [[@pk, 1]]
+      message = @listener.calls.find { |args| args[4][:binds] == binds }
+      assert message, 'expected a message with binds'
+    end
+  end
+end