diff --git a/test/compiler/set-in-observe/_config.js b/test/compiler/set-in-observe/_config.js
new file mode 100644
index 0000000000..81c02623cd
--- /dev/null
+++ b/test/compiler/set-in-observe/_config.js
@@ -0,0 +1,14 @@
+export default {
+	html: `
+		<p>1</p>
+		<p>2</p>
+	`,
+
+	test ( assert, component, target ) {
+		component.set({ foo: 2 });
+		assert.htmlEqual( target.innerHTML, `
+			<p>2</p>
+			<p>4</p>
+		` );
+	}
+};
diff --git a/test/compiler/set-in-observe/main.html b/test/compiler/set-in-observe/main.html
new file mode 100644
index 0000000000..813954511c
--- /dev/null
+++ b/test/compiler/set-in-observe/main.html
@@ -0,0 +1,16 @@
+<p>{{foo}}</p>
+<p>{{bar}}</p>
+
+<script>
+	export default {
+		data: () => ({
+			foo: 1
+		}),
+
+		onrender () {
+			this.observe( 'foo', foo => {
+				this.set({ bar: foo * 2 });
+			});
+		}
+	};
+</script>
diff --git a/test/compiler/set-in-onrender/_config.js b/test/compiler/set-in-onrender/_config.js
new file mode 100644
index 0000000000..1eb52e9522
--- /dev/null
+++ b/test/compiler/set-in-onrender/_config.js
@@ -0,0 +1,3 @@
+export default {
+	html: '<p>2</p>'
+};
diff --git a/test/compiler/set-in-onrender/main.html b/test/compiler/set-in-onrender/main.html
new file mode 100644
index 0000000000..63b72a1383
--- /dev/null
+++ b/test/compiler/set-in-onrender/main.html
@@ -0,0 +1,13 @@
+<p>{{foo}}</p>
+
+<script>
+	export default {
+		data: () => ({
+			foo: 1
+		}),
+
+		onrender () {
+			this.set({ foo: 2 });
+		}
+	};
+</script>