Add test coverage to module setup extensions

activesupport/test/core_ext/module/setup_test.rb

@@ -0,0 +1,74 @@
+require 'abstract_unit'
+require 'active_support/core/time'
+require 'active_support/core_ext/module/setup'
+
+class SetupTest < Test::Unit::TestCase
+  module Baz
+    module ClassMethods
+      def baz
+        "baz"
+      end
+
+      def setup=(value)
+        @@setup = value
+      end
+
+      def setup
+        @@setup
+      end
+    end
+
+    setup do
+      self.setup = true
+    end
+
+    def baz
+      "baz"
+    end
+  end
+
+  module Bar
+    depends_on Baz
+
+    def bar
+      "bar"
+    end
+
+    def baz
+      "bar+" + super
+    end
+  end
+
+  def setup
+    @klass = Class.new
+  end
+
+  def test_module_is_included_normally
+    @klass.use(Baz)
+    assert_equal "baz", @klass.new.baz
+    assert_equal SetupTest::Baz, @klass.included_modules[0]
+
+    @klass.use(Baz)
+    assert_equal "baz", @klass.new.baz
+    assert_equal SetupTest::Baz, @klass.included_modules[0]
+  end
+
+  def test_class_methods_are_extended
+    @klass.use(Baz)
+    assert_equal "baz", @klass.baz
+    assert_equal SetupTest::Baz::ClassMethods, (class << @klass; self.included_modules; end)[0]
+  end
+
+  def test_setup_block_is_ran
+    @klass.use(Baz)
+    assert_equal true, @klass.setup
+  end
+
+  def test_modules_dependencies_are_met
+    @klass.use(Bar)
+    assert_equal "bar", @klass.new.bar
+    assert_equal "bar+baz", @klass.new.baz
+    assert_equal "baz", @klass.baz
+    assert_equal [SetupTest::Bar, SetupTest::Baz], @klass.included_modules[0..1]
+  end
+end