add test for hydration of nested element with if-block element sibling

test/hydration/samples/element-nested-sibling/_after.html

@@ -0,0 +1,4 @@
+<p>
+	<span>1</span>
+	<code>2</code>
+</p>

test/hydration/samples/element-nested-sibling/_before.html

@@ -0,0 +1,4 @@
+<p>
+	<span>1</span>
+	<code>2</code>
+</p>

test/hydration/samples/element-nested-sibling/_config.js

@@ -0,0 +1,19 @@
+export default {
+	snapshot(target) {
+		const p = target.querySelector('p');
+
+		return {
+			p,
+			span: p.querySelector('span'),
+			code: p.querySelector('code')
+		};
+	},
+
+	test(assert, target, snapshot) {
+		const p = target.querySelector('p');
+
+		assert.equal(p, snapshot.p);
+		assert.equal(p.querySelector('span'), snapshot.span);
+		assert.equal(p.querySelector('code'), snapshot.code);
+	}
+};

test/hydration/samples/element-nested-sibling/main.svelte

@@ -0,0 +1,6 @@
+<p>
+    <span>1</span>
+    {#if true}
+        <code>2</code>
+    {/if}
+</p>

test/hydration/samples/expression-sibling/_config.js

@@ -1,19 +1,19 @@
 export default {
 	snapshot(target) {
-		const p = target.querySelector("p");
+		const p = target.querySelector('p');
 
 		return {
 			p,
 			text: p.childNodes[0],
-			span: p.querySelector("span"),
+			span: p.querySelector('span')
 		};
 	},
 
 	test(assert, target, snapshot) {
-		const p = target.querySelector("p");
+		const p = target.querySelector('p');
 
 		assert.equal(p, snapshot.p);
 		assert.equal(p.childNodes[0], snapshot.text);
-		assert.equal(p.querySelector("span"), snapshot.span);
-	},
+		assert.equal(p.querySelector('span'), snapshot.span);
+	}
 };