1 files changed, 45 insertions, 0 deletions
diff --git a/activerecord/test/cases/arel/helper.rb b/activerecord/test/cases/arel/helper.rb
new file mode 100644
index 0000000000..f8ce658440
--- /dev/null
+++ b/activerecord/test/cases/arel/helper.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require "active_support"
+require "minitest/autorun"
+require "arel"
+
+require_relative "support/fake_record"
+
+class Object
+  def must_be_like(other)
+    gsub(/\s+/, " ").strip.must_equal other.gsub(/\s+/, " ").strip
+  end
+end
+
+module Arel
+  class Test < ActiveSupport::TestCase
+    def setup
+      super
+      @arel_engine = Arel::Table.engine
+      Arel::Table.engine = FakeRecord::Base.new
+    end
+
+    def teardown
+      Arel::Table.engine = @arel_engine if defined? @arel_engine
+      super
+    end
+  end
+
+  class Spec < Minitest::Spec
+    before do
+      @arel_engine = Arel::Table.engine
+      Arel::Table.engine = FakeRecord::Base.new
+    end
+
+    after do
+      Arel::Table.engine = @arel_engine if defined? @arel_engine
+    end
+    include ActiveSupport::Testing::Assertions
+
+    # test/unit backwards compatibility methods
+    alias :assert_no_match :refute_match
+    alias :assert_not_equal :refute_equal
+    alias :assert_not_same :refute_same
+  end
+end