[CLEANUP] remove branching for pre-Octane optional feature

This was deprecated and removed in 4.0, which is now the minimum
supported version.

Author: chancancode

addon/src/setup-application-context.ts

@@ -4,7 +4,6 @@ import {
   isTestContext,
   type TestContext,
 } from './setup-context.ts';
-import global from './global.ts';
 import hasEmberVersion from './has-ember-version.ts';
 import settled from './settled.ts';
 import getTestMetadata from './test-metadata.ts';
@@ -168,13 +167,7 @@ export function visit(
       return visitResult;
     })
     .then(() => {
-      if (global.EmberENV._APPLICATION_TEMPLATE_WRAPPER !== false) {
-        context.element = document.querySelector(
-          '#ember-testing > .ember-view',
-        );
-      } else {
-        context.element = document.querySelector('#ember-testing');
-      }
+      context.element = document.querySelector('#ember-testing');
     })
     .then(settled)
     .then(() => {

addon/src/setup-rendering-context.ts

@@ -1,6 +1,5 @@
 import { run } from '@ember/runloop';
 import Ember from 'ember';
-import global from './global.ts';
 import {
   type BaseContext,
   type TestContext,
@@ -315,18 +314,7 @@ export default function setupRenderingContext(
       Object.defineProperty(renderingContext, 'element', {
         configurable: true,
         enumerable: true,
-        // ensure the element is based on the wrapping toplevel view
-        // Ember still wraps the main application template with a
-        // normal tagged view
-        //
-        // In older Ember versions (2.4) the element itself is not stable,
-        // and therefore we cannot update the `this.element` until after the
-        // rendering is completed
-        value:
-          global.EmberENV._APPLICATION_TEMPLATE_WRAPPER !== false
-            ? getRootElement().querySelector('.ember-view')
-            : getRootElement(),
-
+        value: getRootElement(),
         writable: false,
       });
 

test-app/tests/unit/setup-rendering-context-test.js

@@ -1,4 +1,3 @@
-/* globals EmberENV */
 import { module, test } from 'qunit';
 import Service from '@ember/service';
 import Component, { setComponentTemplate } from '@ember/component';
@@ -137,36 +136,18 @@ module('setupRenderingContext', function (hooks) {
       assert.equal(this.element.textContent, 'hello!');
     });
 
-    if (EmberENV._APPLICATION_TEMPLATE_WRAPPER !== false) {
-      test('render exposes an `.element` property with application template wrapper', async function (assert) {
-        let rootElement = document.getElementById('ember-testing');
-        assert.notEqual(
-          this.element,
-          rootElement,
-          'this.element should not be rootElement'
-        );
-        assert.ok(
-          rootElement.contains(this.element),
-          'this.element is _within_ the rootElement'
-        );
-        await render(hbs`<p>Hello!</p>`);
-
-        assert.equal(this.element.textContent, 'Hello!');
-      });
-    } else {
-      test('render exposes an `.element` property without an application template wrapper', async function (assert) {
-        let rootElement = document.getElementById('ember-testing');
-        assert.equal(
-          this.element,
-          rootElement,
-          'this.element should _be_ rootElement'
-        );
+    test('render exposes an `.element` property without an application template wrapper', async function (assert) {
+      let rootElement = document.getElementById('ember-testing');
+      assert.equal(
+        this.element,
+        rootElement,
+        'this.element should _be_ rootElement'
+      );
 
-        await render(hbs`<p>Hello!</p>`);
+      await render(hbs`<p>Hello!</p>`);
 
-        assert.equal(this.element.textContent, 'Hello!');
-      });
-    }
+      assert.equal(this.element.textContent, 'Hello!');
+    });
 
     test('is settled after rendering', async function (assert) {
       await render(hbs`Hi!`);