Add display test

js/tests/languages/deno.test.ts

@@ -40,7 +40,7 @@ sandboxTest('js context', async ({ sandbox }) => {
 })
 
 sandboxTest('js cwd', async ({ sandbox }) => {
-  const result = await sandbox.runCode('process.cwd()', {language: "deno})
+  const result = await sandbox.runCode('process.cwd()', {language: "deno"})
   expect(result.results[0].text).toEqual('/home/user')
 
   const ctx = await sandbox.createCodeContext( {cwd: '/home', language: "deno"})
@@ -59,3 +59,22 @@ subtract(1, 2)
 
   expect(result.results[0].text).toEqual('-1')
 })
+
+sandboxTest('test display', async ({ sandbox }) => {
+  const result = await sandbox.runCode(`
+   {
+  [Symbol.for("Jupyter.display")]() {
+    return {
+      // Plain text content
+      "text/plain": "Hello world!",
+
+      // HTML output
+      "text/html": "<h1>Hello world!</h1>",
+    }
+  }
+}
+`, {language: "deno"})
+
+  expect(result.results[0].html).toBe('<h1>Hello world!</h1>')
+  expect(result.results[0].text).toBe('Hello world!')
+})

python/tests/languages/test_deno.py

@@ -66,3 +66,22 @@ async def test_typescript(async_sandbox: AsyncSandbox):
         language="deno",
     )
     assert execution.results[0].text == "-1"
+
+
+async def test_display(async_sandbox: AsyncSandbox):
+    code = """
+{
+  [Symbol.for("Jupyter.display")]() {
+    return {
+      // Plain text content
+      "text/plain": "Hello world!",
+
+      // HTML output
+      "text/html": "<h1>Hello world!</h1>",
+    }
+  }
+}
+    """
+    execution = await async_sandbox.run_code(code, language="deno")
+    assert execution.results[0].text == "Hello world!"
+    assert execution.results[0].html == "<h1>Hello world!</h1>"