'getSemanticHTML' method should return the correct code block markup when the root container is hidden (T1042310) (#32)

Author: DokaRus

formats/code.js

@@ -15,7 +15,7 @@ class CodeBlockContainer extends Container {
 
   code(index, length) {
     const text = this.children
-      .map(child => (child.length() <= 1 ? '' : child.domNode.innerText))
+      .map(child => (child.length() <= 1 ? '' : child.domNode.textContent))
       .join('\n')
       .slice(index, index + length);
     return escapeText(text);

test/unit/core/quill.js

@@ -856,5 +856,25 @@ describe('Quill', function() {
 
       expect(instance.getSemanticHTML()).toEqual(expected);
     });
+
+    it('should correctly convert hidden code blocks', function() {
+      const instance = this.initialize(
+        Quill,
+        `<p>123</p>
+        <pre>ab</pre>
+        <p>45</p>`,
+        this.container,
+        {
+          modules: {
+            table: true,
+          },
+        },
+      );
+      const expected = '<p>123</p><pre>\nab\n</pre><p>45</p>';
+      this.container.style.visibility = 'hidden';
+
+      expect(instance.getSemanticHTML()).toEqual(expected);
+      this.container.style.visibility = '';
+    });
   });
 });