test(16.2-06): admin SPA coverage of plugin field types and View site

- fieldTypes: one load per script URL, failed and refused scripts
  reported, global styles enabled on every screen, empty list on failure
- registry, formState, FormField and ListView: plugin renderers, locale
  maps, notices as literal text, unknown column types as text
- AppShell: the View site link's href, target, rel and en/pl label

admin/tests/form/registry.test.ts

@@ -15,16 +15,21 @@ import PasswordField from '../../src/components/form/fields/PasswordField.vue'
 import PermissionEditorField from '../../src/components/form/fields/PermissionEditorField.vue'
 import UnsupportedField from '../../src/components/form/fields/UnsupportedField.vue'
 import WidgetField from '../../src/components/form/fields/WidgetField.vue'
+import MLPluginField from '../../src/components/form/fields/MLPluginField.vue'
+import PluginField from '../../src/components/form/fields/PluginField.vue'
 import RelationManager from '../../src/components/relation/RelationManager.vue'
 import {
   controlAttributes,
   controlClass,
   groupLabelled,
+  isPluginField,
   isRegistered,
+  isRegisteredField,
   needsRecord,
   ownsLabel,
   RELATION_MANAGER,
   rendererFor,
+  rendererForField,
   toggleOn,
   toggleValue,
 } from '../../src/components/form/registry'
@@ -220,3 +225,32 @@ describe('markdown and multilingual field types (Phase 14.2.1)', () => {
     },
   )
 })
+
+describe('plugin field types (Phase 16.2, D-13)', () => {
+  const plugin = { name: 'notes', type: 'notes', element: 'acme-demo-notes' }
+
+  it('renders a field that names an element with PluginField, a translatable one with MLPluginField', () => {
+    expect(rendererForField(plugin)).toBe(PluginField)
+    expect(rendererForField({ ...plugin, translatable: true })).toBe(MLPluginField)
+    expect(rendererForField({ ...plugin, translatable: false })).toBe(PluginField)
+  })
+
+  it('keeps the core renderer for a core type, and the unsupported box for an unknown type without an element', () => {
+    expect(rendererForField({ name: 'title', type: 'text' })).toBe(TextField)
+    expect(rendererForField({ name: 'body', type: 'markdown' })).toBe(MarkdownField)
+    expect(rendererForField({ name: 'x', type: 'notes' })).toBe(UnsupportedField)
+    expect(rendererForField({ name: 'x', type: 'notes', element: '' })).toBe(UnsupportedField)
+  })
+
+  it('counts a plugin field as registered and editable whatever its alias', () => {
+    expect(isPluginField(plugin)).toBe(true)
+    expect(isPluginField({ element: '' })).toBe(false)
+    expect(isPluginField({})).toBe(false)
+    expect(isRegisteredField(plugin)).toBe(true)
+    expect(isRegisteredField({ name: 'x', type: 'text' })).toBe(true)
+    expect(isRegisteredField({ name: 'x', type: 'notes' })).toBe(false)
+    // The alias is not a core type: only the element makes it a plugin field.
+    expect(isRegistered('notes')).toBe(false)
+    expect(groupLabelled('notes')).toBe(false)
+  })
+})