Added test for rendering of hard breaks within the editor

No additional new line should be added after hard line breaks,
this is tested by a new tiptap test.
Modified CommonMark rendering test to allow hard breaks without
newline.

Signed-off-by: Ferdinand Thiessen <rpm@fthiessen.de>

src/tests/markdown.spec.js

@@ -34,6 +34,7 @@ describe('Commonmark', () => {
 		// https://github.com/markdown-it/markdown-it/blob/df4607f1d4d4be7fdc32e71c04109aea8cc373fa/test/commonmark.js#L10
 		return str.replace(/<blockquote><\/blockquote>/g, '<blockquote>\n</blockquote>')
 			.replace(/<span class="keep-md">([^<]+)<\/span>/g, '$1')
+			.replace(/<br \/>/, '<br />\n')
 	}
 
 	spec.forEach((entry) => {

src/tests/tiptap.spec.js

@@ -0,0 +1,23 @@
+import createEditor from '../EditorFactory'
+import markdownit from '../markdownit'
+
+const renderedHTML = ( markdown ) => {
+    const editor = createEditor({
+        content: markdownit.render(markdown),
+        enableRichEditing: true
+    })
+    // Remove TrailingNode
+    return editor.getHTML().replace(/<p><\/p>$/, '')
+}
+
+describe('TipTap', () => {
+	it('render softbreaks', () => {
+        const markdown = 'This\nis\none\nparagraph'
+		expect(renderedHTML(markdown)).toEqual(`<p>${markdown}</p>`)
+	})
+
+    it('render hardbreak', () => {
+        const markdown = 'Hard line break  \nNext Paragraph'
+        expect(renderedHTML(markdown)).toEqual('<p>Hard line break<br>Next Paragraph</p>')
+    })
+})