improve tests

packages/svelte/tests/runtime-runes/samples/event-handler-object-invalid/_config.js

@@ -14,17 +14,20 @@ export default test({
 
 		window.addEventListener('error', handler, true);
 
-		const [b1, b2] = target.querySelectorAll('button');
+		const [b1, b2, b3] = target.querySelectorAll('button');
 
 		b1.click();
 		b2.click();
+		b3.click();
 		assert.deepEqual(logs, []);
 		assert.deepEqual(warnings, [
-			'`click` handler at main.svelte:6:17 should be a function. Did you mean to add a leading `() =>`?',
-			'`click` handler at main.svelte:7:17 should be a function. Did you mean to add a leading `() =>`?'
+			'`click` handler at main.svelte:7:17 should be a function. Did you mean to add a leading `() =>`?',
+			'`click` handler at main.svelte:8:17 should be a function. Did you mean to add a leading `() =>`?',
+			'`click` handler at main.svelte:9:17 should be a function. Did you mean to add a leading `() =>`?'
 		]);
 		assert.include(errors[0], 'is not a function');
 		assert.include(errors[2], 'is not a function');
+		assert.include(errors[4], 'is not a function');
 
 		window.removeEventListener('error', handler, true);
 	}

packages/svelte/tests/runtime-runes/samples/event-handler-object-invalid/main.svelte

@@ -1,7 +1,9 @@
 <script>
 	let empty = {};
+	let nully = { handleEvent: null };
 	let wrong = { handleEvent: "bad" };
 </script>
 
 <button onclick={empty}>click</button>
+<button onclick={nully}>click</button>
 <button onclick={wrong}>click</button>

packages/svelte/tests/runtime-runes/samples/event-handler-object/_config.js

@@ -13,10 +13,10 @@ export default test({
 		flushSync();
 		buttons.forEach((b) => b.click());
 		flushSync();
-		assert.deepEqual(logs, [2, 5, 6, 7, 9, 11]);
+		assert.deepEqual(logs, [true, true, "mutated", "mutated", "assigned", "assigned"]);
 		assert.htmlEqual(
 			target.innerHTML,
-			'<button data-step="2">clicks: 11</button><button data-step="3">inc</button><button>next</button>'
+			'<button>a</button><button>b</button><button>next</button>'
 		);
 	}
 });

packages/svelte/tests/runtime-runes/samples/event-handler-object/main.svelte

@@ -1,39 +1,38 @@
 <script>
 	import { on } from 'svelte/events';
 
-	let count = $state(0);
-
 	let onclick = $state.raw({
-		handleEvent() {
-			count += +this.dataset.step;
-			console.log(count);
+		handleEvent(ev) {
+			console.log(this === ev.currentTarget);
 		}
 	});
 
 	function click2() {
-		count++;
-		console.log(count);
+		console.log("mutated");
 	}
 
 	function click3() {
-		count += 2;
-		console.log(count);
+		console.log("assigned");
 	}
 
 	let btn;
+	let step = 1;
 	$effect(() => {
 		return on(btn, 'click', () => {
-			if (onclick.handleEvent !== click2) {
-				onclick.handleEvent = click2;
-			} else {
-				onclick = { handleEvent: click3 };
+			switch (step) {
+				case 1: {
+					onclick.handleEvent = click2;
+					step = 2;
+					break;
+				}
+				case 2: {
+					onclick = { handleEvent: click3 };
+				}
 			}
 		});
 	});
 </script>
 
-<button data-step="2" {onclick}>
-	clicks: {count}
-</button>
-<button data-step="3" {...{onclick}}>inc</button>
+<button {onclick}>a</button>
+<button {...{onclick}}>b</button>
 <button bind:this={btn}>next</button>