feat: Initial clean release of CHM

packages/editor/ProseMirror/utils/preprocessEditorInput.test.ts

@@ -0,0 +1,39 @@
+import preprocessEditorInput from './preprocessEditorInput';
+
+describe('preprocessEditorInput', () => {
+	test.each([
+		{
+			label: 'Should add the correct original markup for a multi-line paragraph',
+			originalHtml: `<p
+					class="maps-to-line"
+					source-line="0"
+					source-line-end="2"
+				>Test<br>Testing...</p>`,
+			source: 'Test<br>Testing...\n\nTest!',
+			expected: (dom: Document) => {
+				expect(
+					dom.querySelector('p').getAttribute('data-original-markup'),
+				).toBe('Test<br>Testing...\n');
+			},
+		},
+		{
+			label: 'Should add the correct original markup for a list',
+			// Joplin lists don't have toplevel source-line and source-line-end attributes.
+			// As such, preprocessEditorInput should fetch this information from the list items.
+			originalHtml: `<ul>
+				<li class="maps-to-line" source-line="0" source-line-end="1">Testing...</li>
+				<li class="maps-to-line" source-line="1" source-line-end="2">Test.</li>
+			</ul>`,
+			source: '- Testing...\n- Test',
+			expected: (dom: Document) => {
+				expect(
+					dom.querySelector('ul').getAttribute('data-original-markup'),
+				).toBe('- Testing...\n- Test');
+			},
+		},
+	])('should add a "data-original-markup" attribute to toplevel nodes: $label', ({ originalHtml, source, expected }) => {
+		const dom = new DOMParser().parseFromString(originalHtml, 'text/html');
+		preprocessEditorInput(dom, source);
+		expected(dom);
+	});
+});