diff --git a/test/js/samples/do-use-dataset/expected-bundle.js b/test/js/samples/do-use-dataset/expected-bundle.js
index efd52585f3..42de89fd93 100644
--- a/test/js/samples/do-use-dataset/expected-bundle.js
+++ b/test/js/samples/do-use-dataset/expected-bundle.js
@@ -149,9 +149,12 @@ function _set(newState) {
 	this._state = assign({}, oldState, newState);
 	this._recompute(changed, this._state);
 	if (this._bind) this._bind(changed, this._state);
-	dispatchObservers(this, this._observers.pre, changed, this._state, oldState);
-	this._fragment.p(changed, this._state);
-	dispatchObservers(this, this._observers.post, changed, this._state, oldState);
+
+	if (this._fragment) {
+		dispatchObservers(this, this._observers.pre, changed, this._state, oldState);
+		this._fragment.p(changed, this._state);
+		dispatchObservers(this, this._observers.post, changed, this._state, oldState);
+	}
 }
 
 function callAll(fns) {
diff --git a/test/js/samples/do-use-dataset/expected.js b/test/js/samples/do-use-dataset/expected.js
index 7e67abbfa0..1ae7417469 100644
--- a/test/js/samples/do-use-dataset/expected.js
+++ b/test/js/samples/do-use-dataset/expected.js
@@ -52,4 +52,4 @@ function SvelteComponent(options) {
 }
 
 assign(SvelteComponent.prototype, proto);
-export default SvelteComponent;
+export default SvelteComponent;
\ No newline at end of file
diff --git a/test/js/samples/dont-use-dataset-in-legacy/expected-bundle.js b/test/js/samples/dont-use-dataset-in-legacy/expected-bundle.js
index 4eaea5ee0a..2d25e23a10 100644
--- a/test/js/samples/dont-use-dataset-in-legacy/expected-bundle.js
+++ b/test/js/samples/dont-use-dataset-in-legacy/expected-bundle.js
@@ -153,9 +153,12 @@ function _set(newState) {
 	this._state = assign({}, oldState, newState);
 	this._recompute(changed, this._state);
 	if (this._bind) this._bind(changed, this._state);
-	dispatchObservers(this, this._observers.pre, changed, this._state, oldState);
-	this._fragment.p(changed, this._state);
-	dispatchObservers(this, this._observers.post, changed, this._state, oldState);
+
+	if (this._fragment) {
+		dispatchObservers(this, this._observers.pre, changed, this._state, oldState);
+		this._fragment.p(changed, this._state);
+		dispatchObservers(this, this._observers.post, changed, this._state, oldState);
+	}
 }
 
 function callAll(fns) {
diff --git a/test/js/samples/dont-use-dataset-in-legacy/expected.js b/test/js/samples/dont-use-dataset-in-legacy/expected.js
index a10c40c13d..03eef26ced 100644
--- a/test/js/samples/dont-use-dataset-in-legacy/expected.js
+++ b/test/js/samples/dont-use-dataset-in-legacy/expected.js
@@ -52,4 +52,4 @@ function SvelteComponent(options) {
 }
 
 assign(SvelteComponent.prototype, proto);
-export default SvelteComponent;
+export default SvelteComponent;
\ No newline at end of file