diff --git a/README.md b/README.md
index 8d4dc27..ade6613 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@
 - **Easing Functions**: Provides a set of easing functions for different types of easings.
 - **Custom Update Frequency**: Option to define update frequency for the tween.
 - **Callbacks**: Callbacks for each tween update.
+- **Custom Easings**: Support for custom easing functions.
 
 ## Setup
 
diff --git a/test/test_tweener.lua b/test/test_tweener.lua
index 828bcb2..34749b3 100644
--- a/test/test_tweener.lua
+++ b/test/test_tweener.lua
@@ -32,5 +32,51 @@ return function()
 			assert(tweener.ease(easing, 0, 100, 1, 0) == 0)
 			assert(tweener.ease(easing, 0, 100, 1, 2) == 0)
 		end)
+
+		it("Tweener should support each Defold tweening", function()
+			local epsilon = 0.0001
+			assert(tweener.ease(go.EASING_INBACK, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INBOUNCE, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INCIRC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INCUBIC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INELASTIC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INEXPO, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTBACK, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTBOUNCE, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTCIRC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTCUBIC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTELASTIC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTEXPO, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTQUAD, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTQUART, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTQUINT, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INOUTSINE, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INQUAD, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INQUART, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INQUINT, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_INSINE, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_LINEAR, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTBACK, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTBOUNCE, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTCIRC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTCUBIC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTELASTIC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTEXPO, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINBACK, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINBOUNCE, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINCIRC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINCUBIC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINELASTIC, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINEXPO, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINQUAD, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINQUART, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINQUINT, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTINSINE, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTQUAD, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTQUART, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTQUINT, 0, 1, 1, 0) < epsilon)
+			assert(tweener.ease(go.EASING_OUTSINE, 0, 1, 1, 0) < epsilon)
+
+		end)
 	end)
 end