diff --git a/tests/animation.cpp b/tests/animation.cpp
index cd191c3..f6ba528 100644
--- a/tests/animation.cpp
+++ b/tests/animation.cpp
@@ -52,6 +52,7 @@ struct Transform {
 
 /* Gets the number of times it looped, and returns if it should stop. */
 using OnLoopHandler = std::function<bool(Sequence& seq, Transform& tr)>;
+using OnFrameHandler = std::function<void()>;
 
 bool DefaultOnLoop(Sequence& seq, Transform& tr) {
   seq.current = 0;
@@ -63,6 +64,8 @@ class Animate2 {
     Sheet $sheet;
     Sequence $sequence;
     Transform $transform;
+    OnFrameHandler onFrame = nullptr;
+
     std::vector<sf::IntRect> $frame_rects{calc_frames()};
     OnLoopHandler onLoop = DefaultOnLoop;
     bool playing = false;
@@ -109,10 +112,12 @@ class Animate2 {
       dbc::check($sequence.frame_count == $sequence.frames.size(), "frame_count doesn't match frame.size()");
 
       auto duration = $sequence.durations.at($sequence.current);
+      bool frame_change = false;
 
       if($sequence.timer.getElapsedTime() >= duration) {
         $sequence.timer.restart();
         $sequence.current++;
+        frame_change = true;
       }
 
       if($sequence.current >= $sequence.frame_count) {
@@ -120,7 +125,9 @@ class Animate2 {
         playing = onLoop($sequence, $transform);
       }
 
-      dbc::check($sequence.current < $sequence.frame_count, "current frame out of frames.size()");
+      if(frame_change && onFrame != nullptr) onFrame();
+
+      dbc::check($sequence.current < $sequence.frame_count, "onLoop fail: current frame out of frames.size()");
     }
 
     void update() {
@@ -240,21 +247,22 @@ TEST_CASE("confirm frame sequencing works", "[animation-new]") {
   anim.onLoop = [&](auto& seq, auto& tr) -> bool {
     seq.current = 0;
     loop_ran = true;
+
     REQUIRE(blanket.sprite->getTextureRect() != init_rect);
     return false;
   };
 
+  anim.onFrame = [&](){
+    anim.apply(*blanket.sprite, {});
+  };
+
   sf::Vector2f pos{0,0};
 
   while(anim.playing) {
     anim.update();
     // NOTE: possibly find a way to only run apply on frame change?
-    anim.apply(*blanket.sprite, pos);
   }
 
-  // NOTE: might need one final apply call to go to frame 0?
-  anim.apply(*blanket.sprite, pos);
-
   REQUIRE(loop_ran == true);
   REQUIRE(anim.playing == false);