1 files changed, 78 insertions, 0 deletions
diff --git a/activesupport/test/class_cache_test.rb b/activesupport/test/class_cache_test.rb
new file mode 100644
index 0000000000..b96f476ce6
--- /dev/null
+++ b/activesupport/test/class_cache_test.rb
@@ -0,0 +1,78 @@
+require 'abstract_unit'
+require 'active_support/dependencies'
+
+module ActiveSupport
+  module Dependencies
+    class ClassCacheTest < ActiveSupport::TestCase
+      def setup
+        @cache = ClassCache.new
+      end
+
+      def test_empty?
+        assert @cache.empty?
+        @cache.store(ClassCacheTest)
+        assert !@cache.empty?
+      end
+
+      def test_clear!
+        assert @cache.empty?
+        @cache.store(ClassCacheTest)
+        assert !@cache.empty?
+        @cache.clear!
+        assert @cache.empty?
+      end
+
+      def test_set_key
+        @cache.store(ClassCacheTest)
+        assert @cache.key?(ClassCacheTest.name)
+      end
+
+      def test_get_with_class
+        @cache.store(ClassCacheTest)
+        assert_equal ClassCacheTest, @cache.get(ClassCacheTest)
+      end
+
+      def test_get_with_name
+        @cache.store(ClassCacheTest)
+        assert_equal ClassCacheTest, @cache.get(ClassCacheTest.name)
+      end
+
+      def test_get_constantizes
+        assert @cache.empty?
+        assert_equal ClassCacheTest, @cache.get(ClassCacheTest.name)
+      end
+
+      def test_get_constantizes_fails_on_invalid_names
+        assert @cache.empty?
+        assert_raise NameError do
+          @cache.get("OmgTotallyInvalidConstantName")
+        end
+      end
+
+      def test_get_alias
+        assert @cache.empty?
+        assert_equal @cache[ClassCacheTest.name], @cache.get(ClassCacheTest.name)
+      end
+
+      def test_safe_get_constantizes
+        assert @cache.empty?
+        assert_equal ClassCacheTest, @cache.safe_get(ClassCacheTest.name)
+      end
+
+      def test_safe_get_constantizes_doesnt_fail_on_invalid_names
+        assert @cache.empty?
+        assert_equal nil, @cache.safe_get("OmgTotallyInvalidConstantName")
+      end
+
+      def test_new_rejects_strings
+        @cache.store ClassCacheTest.name
+        assert !@cache.key?(ClassCacheTest.name)
+      end
+
+      def test_store_returns_self
+        x = @cache.store ClassCacheTest
+        assert_equal @cache, x
+      end
+    end
+  end
+end