move everything around, add more content and a first test for images

docs/src/demos/Nodes/CodeBlock/index.spec.js

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+context('/api/nodes/code-block', () => {
+  before(() => {
+    cy.visit('/api/nodes/code-block')
+  })
+
+  beforeEach(() => {
+    cy.get('.ProseMirror').then(([{ editor }]) => {
+      editor.setContent('<p>Example Text</p>')
+      editor.selectAll()
+    })
+  })
+
+  it('should parse code blocks correctly', () => {
+    cy.get('.ProseMirror').then(([{ editor }]) => {
+      editor.setContent('<pre><code>Example Text</code></pre>')
+      expect(editor.getHTML()).to.eq('<pre><code>Example Text</code></pre>')
+    })
+  })
+
+  it('should parse code blocks with language correctly', () => {
+    cy.get('.ProseMirror').then(([{ editor }]) => {
+      editor.setContent('<pre><code class="language-css">Example Text</code></pre>')
+      expect(editor.getHTML()).to.eq('<pre><code class="language-css">Example Text</code></pre>')
+    })
+  })
+
+  it('the button should make the selected line a code block', () => {
+    cy.get('.demo__preview button:first')
+      .click()
+
+    cy.get('.ProseMirror')
+      .find('pre')
+      .should('contain', 'Example Text')
+  })
+
+  it('the button should toggle the code block', () => {
+    cy.get('.demo__preview button:first')
+      .click()
+
+    cy.get('.ProseMirror')
+      .find('pre')
+      .should('contain', 'Example Text')
+
+    cy.get('.ProseMirror')
+      .type('{selectall}')
+
+    cy.get('.demo__preview button:first')
+      .click()
+
+    cy.get('.ProseMirror pre')
+      .should('not.exist')
+  })
+
+  it('the keyboard shortcut should make the selected line a code block', () => {
+    cy.get('.ProseMirror')
+      .trigger('keydown', { shiftKey: true, modKey: true, key: 'c' })
+      .find('pre')
+      .should('contain', 'Example Text')
+  })
+
+  it('the keyboard shortcut should toggle the code block', () => {
+    cy.get('.ProseMirror')
+      .trigger('keydown', { shiftKey: true, modKey: true, key: 'c' })
+      .find('pre')
+      .should('contain', 'Example Text')
+
+    cy.get('.ProseMirror')
+      .type('{selectall}')
+      .trigger('keydown', { shiftKey: true, modKey: true, key: 'c' })
+
+    cy.get('.ProseMirror pre')
+      .should('not.exist')
+  })
+
+  it('should parse the language from a HTML code block', () => {
+    cy.get('.ProseMirror').then(([{ editor }]) => {
+      editor.setContent('<pre><code class="language-css">body { display: none; }</code></pre>')
+
+      cy.get('.ProseMirror')
+        .find('pre>code.language-css')
+        .should('have.length', 1)
+    })
+  })
+
+  it('should make a code block from backtick markdown shortcuts', () => {
+    cy.get('.ProseMirror').then(([{ editor }]) => {
+      editor.clearContent()
+
+      cy.get('.ProseMirror')
+        .type('``` Code')
+        .find('pre>code')
+        .should('contain', 'Code')
+    })
+  })
+
+  it('should make a code block from tilde markdown shortcuts', () => {
+    cy.get('.ProseMirror').then(([{ editor }]) => {
+      editor.clearContent()
+
+      cy.get('.ProseMirror')
+        .type('~~~ Code')
+        .find('pre>code')
+        .should('contain', 'Code')
+    })
+  })
+
+  it('should make a code block for js with backticks', () => {
+    cy.get('.ProseMirror').then(([{ editor }]) => {
+      editor.clearContent()
+
+      cy.get('.ProseMirror')
+        .type('```js Code')
+        .find('pre>code.language-js')
+        .should('contain', 'Code')
+    })
+  })
+
+  it('should make a code block for js with tildes', () => {
+    cy.get('.ProseMirror').then(([{ editor }]) => {
+      editor.clearContent()
+
+      cy.get('.ProseMirror')
+        .type('~~~js Code')
+        .find('pre>code.language-js')
+        .should('contain', 'Code')
+    })
+  })
+})

docs/src/demos/Nodes/CodeBlock/index.vue

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+<template>
+  <div v-if="editor">
+    <button @click="editor.chain().focus().codeBlock().run()" :class="{ 'is-active': editor.isActive('codeBlock') }">
+      code block
+    </button>
+
+    <editor-content :editor="editor" />
+  </div>
+</template>
+
+<script>
+import { Editor } from '@tiptap/core'
+import { EditorContent } from '@tiptap/vue'
+import Document from '@tiptap/extension-document'
+import Paragraph from '@tiptap/extension-paragraph'
+import Text from '@tiptap/extension-text'
+import CodeBlock from '@tiptap/extension-code-block'
+
+export default {
+  components: {
+    EditorContent,
+  },
+
+  data() {
+    return {
+      editor: null,
+    }
+  },
+
+  mounted() {
+    this.editor = new Editor({
+      extensions: [
+        Document(),
+        Paragraph(),
+        Text(),
+        CodeBlock(),
+      ],
+      content: `
+        <p>
+          That’s a boring paragraph followed by a fenced code block:
+        </p>
+        <pre><code>for (var i=1; i <= 20; i++)
+{
+  if (i % 15 == 0)
+    console.log("FizzBuzz");
+  else if (i % 3 == 0)
+    console.log("Fizz");
+  else if (i % 5 == 0)
+    console.log("Buzz");
+  else
+    console.log(i);
+}</code></pre>
+        <p>
+          Press Command/Ctrl + Enter to leave the fenced code block and continue typing in boring paragraphs.
+        </p>
+      `,
+    })
+  },
+
+  beforeDestroy() {
+    this.editor.destroy()
+  },
+}
+</script>