diff --git a/packages/svelte/tests/runtime-runes/samples/async-overlapping-svelte-set/_config.js b/packages/svelte/tests/runtime-runes/samples/async-overlapping-svelte-set/_config.js
index c7e549c429..e28ba86489 100644
--- a/packages/svelte/tests/runtime-runes/samples/async-overlapping-svelte-set/_config.js
+++ b/packages/svelte/tests/runtime-runes/samples/async-overlapping-svelte-set/_config.js
@@ -1,9 +1,145 @@
+import { tick } from 'svelte';
 import { test } from '../../test';
 
 export default test({
 	async test({ assert, target }) {
+		await tick();
+
 		const [add, shift, pop] = target.querySelectorAll('button');
 
-		// TODO
+		add.click();
+		await tick();
+		add.click();
+		await tick();
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<button>add</button>
+				<button>shift</button>
+				<button>pop</button>
+				<p>pending=2 values.size=1 values=[1]</p>
+				<hr>
+				<p>1: true</p>
+				<p>2: false</p>
+				<p>3: false</p>
+				<p>4: false</p>
+				<p>5: false</p>
+				<hr>
+				<p>1</p>
+			`
+		);
+
+		shift.click();
+		await tick();
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<button>add</button>
+				<button>shift</button>
+				<button>pop</button>
+				<p>pending=1 values.size=2 values=[1,2]</p>
+				<hr>
+				<p>1: true</p>
+				<p>2: true</p>
+				<p>3: false</p>
+				<p>4: false</p>
+				<p>5: false</p>
+				<hr>
+				<p>1</p>
+				<p>2</p>
+			`
+		);
+
+		shift.click();
+		await tick();
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<button>add</button>
+				<button>shift</button>
+				<button>pop</button>
+				<p>pending=0 values.size=3 values=[1,2,3]</p>
+				<hr>
+				<p>1: true</p>
+				<p>2: true</p>
+				<p>3: true</p>
+				<p>4: false</p>
+				<p>5: false</p>
+				<hr>
+				<p>1</p>
+				<p>2</p>
+				<p>3</p>
+			`
+		);
+
+		add.click();
+		await tick();
+		add.click();
+		await tick();
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<button>add</button>
+				<button>shift</button>
+				<button>pop</button>
+				<p>pending=2 values.size=3 values=[1,2,3]</p>
+				<hr>
+				<p>1: true</p>
+				<p>2: true</p>
+				<p>3: true</p>
+				<p>4: false</p>
+				<p>5: false</p>
+				<hr>
+				<p>1</p>
+				<p>2</p>
+				<p>3</p>
+			`
+		);
+
+		pop.click();
+		await tick();
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<button>add</button>
+				<button>shift</button>
+				<button>pop</button>
+				<p>pending=1 values.size=3 values=[1,2,3]</p>
+				<hr>
+				<p>1: true</p>
+				<p>2: true</p>
+				<p>3: true</p>
+				<p>4: false</p>
+				<p>5: false</p>
+				<hr>
+				<p>1</p>
+				<p>2</p>
+				<p>3</p>
+			`
+		);
+
+		pop.click();
+		await tick();
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<button>add</button>
+				<button>shift</button>
+				<button>pop</button>
+				<p>pending=0 values.size=5 values=[1,2,3,4,5]</p>
+				<hr>
+				<p>1: true</p>
+				<p>2: true</p>
+				<p>3: true</p>
+				<p>4: true</p>
+				<p>5: true</p>
+				<hr>
+				<p>1</p>
+				<p>2</p>
+				<p>3</p>
+				<p>4</p>
+				<p>5</p>
+			`
+		);
 	}
 });
diff --git a/packages/svelte/tests/runtime-runes/samples/async-overlapping-svelte-set/main.svelte b/packages/svelte/tests/runtime-runes/samples/async-overlapping-svelte-set/main.svelte
index 56eac65192..5995a44990 100644
--- a/packages/svelte/tests/runtime-runes/samples/async-overlapping-svelte-set/main.svelte
+++ b/packages/svelte/tests/runtime-runes/samples/async-overlapping-svelte-set/main.svelte
@@ -24,7 +24,7 @@
 
 <p>
 	pending={$effect.pending()}
-	values.length={values.size}
+	values.size={values.size}
 	values=[{Array.from(values)}]
 </p>