test(form): cover markdown descriptions

tests/end-to-end/fixtures/form/index.sql

@@ -0,0 +1,45 @@
+-- Exercise every form layout that renders a field description:
+-- standard controls, the legacy checkbox/radio controls, and switches.
+SELECT
+    'form' AS component,
+    'Form description markdown' AS title,
+    '' AS validate;
+
+SELECT
+    'modern_text' AS name,
+    'Modern text field' AS label,
+    '**Bold text** and *italic text*.' AS description_md;
+
+SELECT
+    'modern_textarea' AS name,
+    'Modern textarea' AS label,
+    'textarea' AS type,
+    '**Bold textarea** and *italic textarea*.' AS description_md;
+
+SELECT
+    'modern_select' AS name,
+    'Modern select' AS label,
+    'select' AS type,
+    '[{"label":"Option","value":"option"}]' AS options,
+    '**Bold select** and *italic select*.' AS description_md;
+
+SELECT
+    'legacy_radio' AS name,
+    'Legacy radio' AS label,
+    'radio' AS type,
+    'radio' AS value,
+    '**Bold radio** and *italic radio*.' AS description_md;
+
+SELECT
+    'legacy_checkbox' AS name,
+    'Legacy checkbox' AS label,
+    'checkbox' AS type,
+    'checkbox' AS value,
+    '**Bold checkbox** and *italic checkbox*.' AS description_md;
+
+SELECT
+    'modern_switch' AS name,
+    'Modern switch' AS label,
+    'switch' AS type,
+    'switch' AS value,
+    '**Bold switch** and *italic switch*.' AS description_md;

tests/end-to-end/fixtures/form/test.ts

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+import { expect, test } from "../../fixture";
+
+const fields = [
+  { selector: 'input[name="modern_text"]', name: "text" },
+  { selector: 'textarea[name="modern_textarea"]', name: "textarea" },
+  { selector: 'select[name="modern_select"]', name: "select" },
+  { selector: 'input[name="legacy_radio"]', name: "radio" },
+  { selector: 'input[name="legacy_checkbox"]', name: "checkbox" },
+  { selector: 'input[name="modern_switch"]', name: "switch" },
+];
+
+test("renders markdown descriptions for every form field layout (#808)", async ({
+  page,
+}) => {
+  for (const { selector, name } of fields) {
+    const field = page.locator(selector);
+    const hint = field
+      .locator("xpath=ancestor::label[1]")
+      .locator(".form-hint");
+
+    await expect(field).toBeVisible();
+    await expect(hint.locator("strong")).toHaveText(`Bold ${name}`);
+    await expect(hint.locator("em")).toHaveText(`italic ${name}`);
+  }
+});