Added tests for the front matter node

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

cypress/e2e/FrontMatter.spec.js

@@ -0,0 +1,62 @@
+/**
+ * @copyright Copyright (c) 2022
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+import { initUserAndFiles, randHash } from '../utils/index.js'
+
+const randUser = randHash()
+
+describe('Front matter support', function() {
+	before(function() {
+		initUserAndFiles(randUser, 'frontmatter.md', 'empty.md')
+	})
+
+	beforeEach(function() {
+		cy.login(randUser, 'password')
+	})
+
+	it('Open file with front matter', function() {
+		cy.openFile('frontmatter.md').then(() => {
+			expect(cy.getContent().find('pre.frontmatter').length === 1)
+		})
+	})
+
+	it('Add front matter', function() {
+		cy.openFile('empty.md').clearContent().then(() => {
+			cy.getContent()
+				.type('---')
+				.type('test')
+			cy.getContent().find('pre.frontmatter').should(pre => {
+				expect(pre.length === 1)
+				expect(pre[0].text === 'test')
+			})
+		})
+	})
+
+	it('Do not add multiple front matter', function() {
+		cy.openFile('empty.md').clearContent().then(() => {
+			cy.getContent()
+				.type('---test')
+				.type('{downArrow}')
+				.type('---test')
+			cy.getContent().find('pre.frontmatter').should(pre => expect(pre.length === 1))
+			cy.getContent().find('hr').should(hr => expect(hr.length === 1))
+		})
+	})
+})

cypress/fixtures/frontmatter.md

@@ -0,0 +1,6 @@
+---
+some: value
+other: 1.2
+---
+# Heading
+Content

src/tests/markdown.spec.js

@@ -192,4 +192,10 @@ describe('Markdown serializer from html', () => {
 			`<p class="callout warning">!warning!</p>`
 		)).toBe(`::: warn\n!warning!\n\n:::`)
 	})
+
+	test('front matter', () => {
+		expect(markdownThroughEditorHtml('<pre id="frontmatter"><code>some: value</code></pre><h1>Heading</h1>')).toBe('---\nsome: value\n---\n\n# Heading')
+		// Test --- within front matter is allowed
+		expect(markdownThroughEditorHtml('<pre id="frontmatter"><code>---</code></pre><h1>Heading</h1>')).toBe('----\n---\n----\n\n# Heading')
+	})
 })