From a8c0ec8c5dd1bc10ff048532bb555fb832de503e Mon Sep 17 00:00:00 2001
From: Wout Mertens <Wout.Mertens@gmail.com>
Date: Fri, 11 Oct 2024 15:08:07 +0200
Subject: [PATCH] wip

---
 .../qwik/src/core/tests/projection.spec.tsx   | 13 ++++----
 .../qwik/src/testing/vdom-diff.unit-util.ts   | 31 ++++++++++++++-----
 2 files changed, 30 insertions(+), 14 deletions(-)

diff --git a/packages/qwik/src/core/tests/projection.spec.tsx b/packages/qwik/src/core/tests/projection.spec.tsx
index 0e2eac742c6..445ee2b1b9f 100644
--- a/packages/qwik/src/core/tests/projection.spec.tsx
+++ b/packages/qwik/src/core/tests/projection.spec.tsx
@@ -24,7 +24,7 @@ import { HTML_NS, SVG_NS } from '../shared/utils/markers';
 import { cleanupAttrs } from 'packages/qwik/src/testing/element-fixture';
 import { DomFragment } from '../../testing/rendering.unit-util';
 
-const DEBUG = false;
+const DEBUG = !false;
 
 /**
  * Below are helper components that are constant. They have to be in the top level scope so that the
@@ -43,6 +43,8 @@ describe.each([
   { render: ssrRenderToDom }, //
   { render: domRender }, //
 ])('$render.name: projection', ({ render }) => {
+  const isSsr = render === ssrRenderToDom;
+
   it('should render basic projection', async () => {
     const Child = component$(() => {
       return (
@@ -72,7 +74,7 @@ describe.each([
       render
     );
   });
-  it('should render unused projection into template', async () => {
+  it.only('should render unused projection into template', async () => {
     const Child = component$(() => {
       return <span>no-projection</span>;
     });
@@ -87,12 +89,9 @@ describe.each([
         </DomFragment>
       </DomFragment>
     );
-    if (render === ssrRenderToDom) {
+    if (isSsr) {
       expect(vnode_getNextSibling(vNode!)).toMatchVDOM(
-        <q:template style="display:none">
-          <DomFragment>parent-content</DomFragment>
-          <DomFragment>render-content</DomFragment>
-        </q:template>
+        <q:template style="display:none">parent-contentrender-content</q:template>
       );
     }
   });
diff --git a/packages/qwik/src/testing/vdom-diff.unit-util.ts b/packages/qwik/src/testing/vdom-diff.unit-util.ts
index 13044c3282b..c71f27e8211 100644
--- a/packages/qwik/src/testing/vdom-diff.unit-util.ts
+++ b/packages/qwik/src/testing/vdom-diff.unit-util.ts
@@ -85,6 +85,7 @@ function diffJsxVNode(
     if (expectedChildren.length === 1) {
       return diffJsxVNode(received, expectedChildren[0], path, isSsr);
     } else {
+      // We're skipping non-serialized vnodes, so they should have only one child
       console.error('Expected fragment to have only one child', received, expected);
     }
   }
@@ -153,13 +154,29 @@ function diffJsxVNode(
         diffs.push(...diffJsxVNode(receivedChild, expectedChild, path, isSsr));
       }
     } else {
-      diffs.push(
-        `${path.join(' > ')} expecting ${expectedChildren.length} children but was ${
-          receivedChildren.length
-        }`
-      );
-      diffs.push('EXPECTED', jsxToHTML(expected, '  '));
-      diffs.push('RECEIVED:', vnodeToHTML(received, '  '));
+      // special case: adjacent text nodes that are merged during SSR
+      if (isSsr && receivedChildren.length === 1 && vnode_isTextVNode(received)) {
+        // If the expected children are text nodes, we can compare them directly
+        const expectedText = expectedChildren
+          .map((child) =>
+            typeof child === 'string' ? child : typeof child === 'object' ? child.children : ''
+          )
+          .join('');
+        const receivedText = vnode_getText(received as _TextVNode);
+        if (expectedText !== receivedText) {
+          diffs.push(path.join(' > '));
+          diffs.push('EXPECTED', JSON.stringify(expectedText));
+          diffs.push('RECEIVED:', JSON.stringify(receivedText));
+        }
+      } else {
+        diffs.push(
+          `${path.join(' > ')} expecting ${expectedChildren.length} children but was ${
+            receivedChildren.length
+          }`
+        );
+        diffs.push('EXPECTED', jsxToHTML(expected, '  '));
+        diffs.push('RECEIVED:', vnodeToHTML(received, '  '));
+      }
     }
     path.pop();
   }