feat: v4.0.0 (#1016)

Co-authored-by: Denys Konovalov <kontakt@denyskon.de>
Co-authored-by: Mathieu COSYNS <64072917+Mathieu-COSYNS@users.noreply.github.com>

cypress/e2e/_old/markdown_widget_marks_spec.js

@@ -0,0 +1,31 @@
+describe('Markdown widget', () => {
+  describe('code mark', () => {
+    before(() => {
+      Cypress.config('defaultCommandTimeout', 4000);
+      cy.task('setupBackend', { backend: 'test' });
+    });
+
+    beforeEach(() => {
+      cy.loginAndNewPost();
+      cy.clearMarkdownEditorContent();
+    });
+
+    after(() => {
+      cy.task('teardownBackend', { backend: 'test' });
+    });
+
+    describe('toolbar button', () => {
+      it('can combine code mark with other marks', () => {
+        cy.clickItalicButton().type('foo').setSelection('oo').clickCodeButton()
+          .confirmMarkdownEditorContent(`
+            <p>
+              <em>f</em>
+              <code>
+                <em>oo</em>
+              </code>
+            </p>
+          `);
+      });
+    });
+  });
+});