diff --git a/tests/acceptance/404-test.js b/tests/acceptance/404-test.js
index 433db0a02ad..c0813cf6c24 100644
--- a/tests/acceptance/404-test.js
+++ b/tests/acceptance/404-test.js
@@ -1,12 +1,10 @@
 import { currentURL, fillIn, triggerEvent, visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
 
 module('Acceptance | 404', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('/unknown-route shows a 404 page', async function (assert) {
     await visit('/unknown-route');
diff --git a/tests/acceptance/api-token-test.js b/tests/acceptance/api-token-test.js
index 299740991aa..e501d6d3f88 100644
--- a/tests/acceptance/api-token-test.js
+++ b/tests/acceptance/api-token-test.js
@@ -1,16 +1,15 @@
 import { click, currentURL, fillIn, findAll } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import { Response } from 'ember-cli-mirage';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Acceptance | api-tokens', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   function prepare(context) {
     let user = context.server.create('user', {
diff --git a/tests/acceptance/categories-test.js b/tests/acceptance/categories-test.js
index f5263a7837a..b1d28051ae9 100644
--- a/tests/acceptance/categories-test.js
+++ b/tests/acceptance/categories-test.js
@@ -1,16 +1,15 @@
 import { visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import a11yAudit from 'ember-a11y-testing/test-support/audit';
 
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import axeConfig from '../axe-config';
-import setupMirage from '../helpers/setup-mirage';
 
 module('Acceptance | categories', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('listing categories', async function (assert) {
     this.owner.lookup('service:intl').locale = 'en';
diff --git a/tests/acceptance/crate-following-test.js b/tests/acceptance/crate-following-test.js
index 02ec698535e..38d6331b660 100644
--- a/tests/acceptance/crate-following-test.js
+++ b/tests/acceptance/crate-following-test.js
@@ -1,14 +1,12 @@
 import { click, settled, visit, waitFor } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import { defer } from 'rsvp';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
 
 module('Acceptance | Crate following', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   function prepare(context, { loggedIn = true, following = false } = {}) {
     let server = context.server;
diff --git a/tests/acceptance/crate-test.js b/tests/acceptance/crate-test.js
index 09a52cc9a5a..8e8f07efca7 100644
--- a/tests/acceptance/crate-test.js
+++ b/tests/acceptance/crate-test.js
@@ -1,17 +1,16 @@
 import { click, currentRouteName, currentURL, visit, waitFor } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, skip, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import a11yAudit from 'ember-a11y-testing/test-support/audit';
 import { getPageTitle } from 'ember-page-title/test-support';
 
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import axeConfig from '../axe-config';
-import setupMirage from '../helpers/setup-mirage';
 
 module('Acceptance | crate page', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('visiting a crate page from the front page', async function (assert) {
     this.server.create('crate', { name: 'nanomsg', newest_version: '0.6.1' });
diff --git a/tests/acceptance/crates-test.js b/tests/acceptance/crates-test.js
index a75ffa0ed96..8ebd55614b8 100644
--- a/tests/acceptance/crates-test.js
+++ b/tests/acceptance/crates-test.js
@@ -1,17 +1,16 @@
 import { click, currentURL, visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import a11yAudit from 'ember-a11y-testing/test-support/audit';
 import { getPageTitle } from 'ember-page-title/test-support';
 
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import axeConfig from '../axe-config';
-import setupMirage from '../helpers/setup-mirage';
 
 module('Acceptance | crates page', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   // should match the default set in the crates controller
   const per_page = 50;
diff --git a/tests/acceptance/dashboard-test.js b/tests/acceptance/dashboard-test.js
index eb06746ddea..2980524fa4e 100644
--- a/tests/acceptance/dashboard-test.js
+++ b/tests/acceptance/dashboard-test.js
@@ -1,15 +1,14 @@
 import { currentURL } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Acceptance | Dashboard', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('redirects to / when not logged in', async function (assert) {
     await visit('/dashboard');
diff --git a/tests/acceptance/email-change-test.js b/tests/acceptance/email-change-test.js
index f65abb9a8b3..0a0aefb136c 100644
--- a/tests/acceptance/email-change-test.js
+++ b/tests/acceptance/email-change-test.js
@@ -1,13 +1,12 @@
 import { click, currentURL, fillIn } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Acceptance | Email Change', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('happy path', async function (assert) {
     let user = this.server.create('user', { email: 'old@email.com' });
diff --git a/tests/acceptance/email-confirmation-test.js b/tests/acceptance/email-confirmation-test.js
index 0589912ddf9..c4895e66b1f 100644
--- a/tests/acceptance/email-confirmation-test.js
+++ b/tests/acceptance/email-confirmation-test.js
@@ -1,13 +1,12 @@
 import { currentURL } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Acceptance | Email Confirmation', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('unauthenticated happy path', async function (assert) {
     let user = this.server.create('user', { emailVerificationToken: 'badc0ffee' });
diff --git a/tests/acceptance/front-page-test.js b/tests/acceptance/front-page-test.js
index ae52fe63fb8..95d14339ff1 100644
--- a/tests/acceptance/front-page-test.js
+++ b/tests/acceptance/front-page-test.js
@@ -1,5 +1,4 @@
 import { click, currentURL, settled, visit, waitFor } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import { defer } from 'rsvp';
@@ -8,13 +7,13 @@ import percySnapshot from '@percy/ember';
 import a11yAudit from 'ember-a11y-testing/test-support/audit';
 import { getPageTitle } from 'ember-page-title/test-support';
 
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { summary } from '../../mirage/route-handlers/summary';
 import axeConfig from '../axe-config';
-import setupMirage from '../helpers/setup-mirage';
 
 module('Acceptance | front page', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('visiting /', async function (assert) {
     this.owner.lookup('service:intl').locale = 'en';
diff --git a/tests/acceptance/invites-test.js b/tests/acceptance/invites-test.js
index 04bcd1766ad..eef8f844bf4 100644
--- a/tests/acceptance/invites-test.js
+++ b/tests/acceptance/invites-test.js
@@ -1,16 +1,15 @@
 import { click, currentURL } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import Response from 'ember-cli-mirage/response';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Acceptance | /me/pending-invites', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   function prepare(context) {
     let user = context.server.create('user');
diff --git a/tests/acceptance/keyword-test.js b/tests/acceptance/keyword-test.js
index 1bcb2940df7..f89e8623a65 100644
--- a/tests/acceptance/keyword-test.js
+++ b/tests/acceptance/keyword-test.js
@@ -1,16 +1,15 @@
 import { visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import a11yAudit from 'ember-a11y-testing/test-support/audit';
 
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import axeConfig from '../axe-config';
-import setupMirage from '../helpers/setup-mirage';
 
 module('Acceptance | keywords', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('keyword/:keyword_id index default sort is recent-downloads', async function (assert) {
     this.server.create('keyword', { keyword: 'network' });
diff --git a/tests/acceptance/login-test.js b/tests/acceptance/login-test.js
index 8bdc4016cf8..01b92c63260 100644
--- a/tests/acceptance/login-test.js
+++ b/tests/acceptance/login-test.js
@@ -1,5 +1,4 @@
 import { click, currentURL, visit, waitFor } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import { defer } from 'rsvp';
@@ -7,12 +6,11 @@ import { defer } from 'rsvp';
 import window from 'ember-window-mock';
 import { setupWindowMock } from 'ember-window-mock/test-support';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
 
 module('Acceptance | Login', function (hooks) {
   setupApplicationTest(hooks);
   setupWindowMock(hooks);
-  setupMirage(hooks);
 
   test('successful login', async function (assert) {
     let deferred = defer();
diff --git a/tests/acceptance/logout-test.js b/tests/acceptance/logout-test.js
index 4372a694b58..cdf82e3f567 100644
--- a/tests/acceptance/logout-test.js
+++ b/tests/acceptance/logout-test.js
@@ -1,12 +1,10 @@
 import { click, currentURL, visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
 
 module('Acceptance | Logout', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('successful logout', async function (assert) {
     let user = this.server.create('user', { name: 'John Doe' });
diff --git a/tests/acceptance/owners-test.js b/tests/acceptance/owners-test.js
index ad21692328d..7787c7c05a2 100644
--- a/tests/acceptance/owners-test.js
+++ b/tests/acceptance/owners-test.js
@@ -1,16 +1,15 @@
 import { click, fillIn, visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import a11yAudit from 'ember-a11y-testing/test-support/audit';
 
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import axeConfig from '../axe-config';
-import setupMirage from '../helpers/setup-mirage';
 
 module('Acceptance | /crates/:name/owners', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('listing crate owners', async function (assert) {
     this.server.loadFixtures();
diff --git a/tests/acceptance/reverse-dependencies-test.js b/tests/acceptance/reverse-dependencies-test.js
index 85fd481d8ce..99c4978208b 100644
--- a/tests/acceptance/reverse-dependencies-test.js
+++ b/tests/acceptance/reverse-dependencies-test.js
@@ -1,13 +1,12 @@
 import { click, currentURL } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Acceptance | /crates/:crate_id/reverse_dependencies', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   function prepare({ server }) {
     let foo = server.create('crate', { name: 'foo' });
diff --git a/tests/acceptance/search-test.js b/tests/acceptance/search-test.js
index 1e3aee8bee6..d25586e1b09 100644
--- a/tests/acceptance/search-test.js
+++ b/tests/acceptance/search-test.js
@@ -1,5 +1,4 @@
 import { blur, click, currentURL, fillIn, settled, triggerEvent, visit, waitFor } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import { defer } from 'rsvp';
@@ -9,13 +8,13 @@ import a11yAudit from 'ember-a11y-testing/test-support/audit';
 import { keyDown } from 'ember-keyboard/test-support/test-helpers';
 import { getPageTitle } from 'ember-page-title/test-support';
 
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { list as listCrates } from '../../mirage/route-handlers/crates';
 import axeConfig from '../axe-config';
-import setupMirage from '../helpers/setup-mirage';
 
 module('Acceptance | search', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('searching for "rust"', async function (assert) {
     this.server.loadFixtures();
diff --git a/tests/acceptance/team-page-test.js b/tests/acceptance/team-page-test.js
index ff3c2943d39..acd5625eb8c 100644
--- a/tests/acceptance/team-page-test.js
+++ b/tests/acceptance/team-page-test.js
@@ -1,16 +1,15 @@
 import { visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import a11yAudit from 'ember-a11y-testing/test-support/audit';
 
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import axeConfig from '../axe-config';
-import setupMirage from '../helpers/setup-mirage';
 
 module('Acceptance | team page', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('has team organization display', async function (assert) {
     this.server.loadFixtures();
diff --git a/tests/acceptance/token-invites-test.js b/tests/acceptance/token-invites-test.js
index 2e75a8a71c5..1eaf6ae4b24 100644
--- a/tests/acceptance/token-invites-test.js
+++ b/tests/acceptance/token-invites-test.js
@@ -1,16 +1,15 @@
 import { currentURL } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import Response from 'ember-cli-mirage/response';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Acceptance | /accept-invite/:token', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('visiting to /accept-invite shows 404 page', async function (assert) {
     await visit('/accept-invite');
diff --git a/tests/acceptance/user-page-test.js b/tests/acceptance/user-page-test.js
index f604615d637..f94dd506c47 100644
--- a/tests/acceptance/user-page-test.js
+++ b/tests/acceptance/user-page-test.js
@@ -1,16 +1,15 @@
 import { visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import percySnapshot from '@percy/ember';
 import a11yAudit from 'ember-a11y-testing/test-support/audit';
 
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import axeConfig from '../axe-config';
-import setupMirage from '../helpers/setup-mirage';
 
 module('Acceptance | user page', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('has user display', async function (assert) {
     this.server.loadFixtures();
diff --git a/tests/bugs/2329-test.js b/tests/bugs/2329-test.js
index fe19096e184..d3f10684254 100644
--- a/tests/bugs/2329-test.js
+++ b/tests/bugs/2329-test.js
@@ -1,17 +1,16 @@
 import { click, currentURL, waitFor } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import window from 'ember-window-mock';
 import { setupWindowMock } from 'ember-window-mock/test-support';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Bug #2329', function (hooks) {
   setupApplicationTest(hooks);
   setupWindowMock(hooks);
-  setupMirage(hooks);
 
   test('is fixed', async function (assert) {
     let user = this.server.create('user');
diff --git a/tests/components/crate-row-test.js b/tests/components/crate-row-test.js
index 29bf448974b..ba34afb405b 100644
--- a/tests/components/crate-row-test.js
+++ b/tests/components/crate-row-test.js
@@ -1,9 +1,10 @@
 import { render } from '@ember/test-helpers';
-import { setupRenderingTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import { hbs } from 'ember-cli-htmlbars';
 
+import { setupRenderingTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Component | CrateRow', function (hooks) {
diff --git a/tests/components/download-graph-test.js b/tests/components/download-graph-test.js
index 88323af0897..a930be5e06b 100644
--- a/tests/components/download-graph-test.js
+++ b/tests/components/download-graph-test.js
@@ -1,5 +1,4 @@
 import { click, render, settled, waitFor } from '@ember/test-helpers';
-import { setupRenderingTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import Service from '@ember/service';
@@ -10,6 +9,8 @@ import { task } from 'ember-concurrency';
 import window from 'ember-window-mock';
 import { setupWindowMock } from 'ember-window-mock/test-support';
 
+import { setupRenderingTest } from 'cargo/tests/helpers';
+
 module('Component | DownloadGraph', function (hooks) {
   setupRenderingTest(hooks);
   setupWindowMock(hooks);
diff --git a/tests/helpers/index.js b/tests/helpers/index.js
new file mode 100644
index 00000000000..245090d28f2
--- /dev/null
+++ b/tests/helpers/index.js
@@ -0,0 +1,11 @@
+import { setupApplicationTest as upstreamSetupApplicationTest } from 'ember-qunit';
+
+import setupMirage from './setup-mirage';
+
+export { setupTest, setupRenderingTest } from 'ember-qunit';
+
+// see http://emberjs.github.io/rfcs/0637-customizable-test-setups.html
+export function setupApplicationTest(hooks, options) {
+  upstreamSetupApplicationTest(hooks, options);
+  setupMirage(hooks);
+}
diff --git a/tests/mirage/categories-test.js b/tests/mirage/categories-test.js
index 0dc68f6339d..cb1aabad038 100644
--- a/tests/mirage/categories-test.js
+++ b/tests/mirage/categories-test.js
@@ -1,8 +1,9 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import fetch from 'fetch';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Mirage | Categories', function (hooks) {
diff --git a/tests/mirage/crates-test.js b/tests/mirage/crates-test.js
index 97fcba1aca3..017006acc67 100644
--- a/tests/mirage/crates-test.js
+++ b/tests/mirage/crates-test.js
@@ -1,8 +1,9 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import fetch from 'fetch';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Mirage | Crates', function (hooks) {
diff --git a/tests/mirage/keywords-test.js b/tests/mirage/keywords-test.js
index 3331dacf7ac..3bd23e30a73 100644
--- a/tests/mirage/keywords-test.js
+++ b/tests/mirage/keywords-test.js
@@ -1,8 +1,9 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import fetch from 'fetch';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Mirage | Keywords', function (hooks) {
diff --git a/tests/mirage/me-test.js b/tests/mirage/me-test.js
index bef600a5eab..b09fa77b7fb 100644
--- a/tests/mirage/me-test.js
+++ b/tests/mirage/me-test.js
@@ -1,9 +1,10 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import fetch from 'fetch';
 import timekeeper from 'timekeeper';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Mirage | /me', function (hooks) {
diff --git a/tests/mirage/session-test.js b/tests/mirage/session-test.js
index 90d888efc56..af007351027 100644
--- a/tests/mirage/session-test.js
+++ b/tests/mirage/session-test.js
@@ -1,8 +1,9 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import fetch from 'fetch';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Mirage | Session', function (hooks) {
diff --git a/tests/mirage/summary-test.js b/tests/mirage/summary-test.js
index 08e462ac575..60b5e8f8993 100644
--- a/tests/mirage/summary-test.js
+++ b/tests/mirage/summary-test.js
@@ -1,8 +1,9 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import fetch from 'fetch';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Mirage | Summary', function (hooks) {
diff --git a/tests/mirage/teams-test.js b/tests/mirage/teams-test.js
index c11cc5ce51d..a40701baacf 100644
--- a/tests/mirage/teams-test.js
+++ b/tests/mirage/teams-test.js
@@ -1,8 +1,9 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import fetch from 'fetch';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Mirage | Teams', function (hooks) {
diff --git a/tests/mirage/users-test.js b/tests/mirage/users-test.js
index f712ac34e3d..4cda924eb24 100644
--- a/tests/mirage/users-test.js
+++ b/tests/mirage/users-test.js
@@ -1,8 +1,9 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import fetch from 'fetch';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Mirage | Users', function (hooks) {
diff --git a/tests/models/crate-test.js b/tests/models/crate-test.js
index 9f8527180aa..3f903f5195e 100644
--- a/tests/models/crate-test.js
+++ b/tests/models/crate-test.js
@@ -1,10 +1,11 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import AdapterError from '@ember-data/adapter/error';
 
 import setupMirage from 'ember-cli-mirage/test-support/setup-mirage';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 module('Model | Crate', function (hooks) {
   setupTest(hooks);
   setupMirage(hooks);
diff --git a/tests/models/user-test.js b/tests/models/user-test.js
index 95e9ebd95fc..e95a3df0290 100644
--- a/tests/models/user-test.js
+++ b/tests/models/user-test.js
@@ -1,6 +1,7 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 import setupMirage from '../helpers/setup-mirage';
 
 module('Model | User', function (hooks) {
diff --git a/tests/modifiers/highlight-syntax-test.js b/tests/modifiers/highlight-syntax-test.js
index 5e480ca1551..22300c0c08e 100644
--- a/tests/modifiers/highlight-syntax-test.js
+++ b/tests/modifiers/highlight-syntax-test.js
@@ -1,9 +1,10 @@
 import { render } from '@ember/test-helpers';
-import { setupRenderingTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import { hbs } from 'ember-cli-htmlbars';
 
+import { setupRenderingTest } from 'cargo/tests/helpers';
+
 module('Modifier | highlight-syntax', function (hooks) {
   setupRenderingTest(hooks);
 
diff --git a/tests/routes/category-test.js b/tests/routes/category-test.js
index ac757837031..05b6e1ff56e 100644
--- a/tests/routes/category-test.js
+++ b/tests/routes/category-test.js
@@ -1,13 +1,12 @@
 import { currentURL } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Route | category', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test("shows an error message if the category can't be found", async function (assert) {
     await visit('/categories/unknown');
diff --git a/tests/routes/crate/version/docs-link-test.js b/tests/routes/crate/version/docs-link-test.js
index 2fa7c2fb415..be2c494f186 100644
--- a/tests/routes/crate/version/docs-link-test.js
+++ b/tests/routes/crate/version/docs-link-test.js
@@ -1,12 +1,10 @@
 import { visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
-import setupMirage from '../../../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
 
 module('Route | crate.version | docs link', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test('shows regular documentation link', async function (assert) {
     this.server.create('crate', { name: 'foo', documentation: 'https://foo.io/docs' });
diff --git a/tests/routes/crate/version/model-test.js b/tests/routes/crate/version/model-test.js
index 79e1f5117e8..8a8157a4741 100644
--- a/tests/routes/crate/version/model-test.js
+++ b/tests/routes/crate/version/model-test.js
@@ -1,12 +1,10 @@
 import { currentURL, visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
-import setupMirage from '../../../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
 
 module('Route | crate.version | model() hook', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   module('with explicit version number in the URL', function () {
     test('shows yanked versions', async function (assert) {
diff --git a/tests/routes/github-authorize-test.js b/tests/routes/github-authorize-test.js
index 589d280d654..2da5cd8076a 100644
--- a/tests/routes/github-authorize-test.js
+++ b/tests/routes/github-authorize-test.js
@@ -1,16 +1,14 @@
 import { visit } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import window from 'ember-window-mock';
 import { setupWindowMock } from 'ember-window-mock/test-support';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
 
 module('Route | github-authorized', function (hooks) {
   setupApplicationTest(hooks);
   setupWindowMock(hooks);
-  setupMirage(hooks);
 
   test('forwards code and state to window.opener.postMessage()', async function (assert) {
     let message = null;
diff --git a/tests/routes/keyword-test.js b/tests/routes/keyword-test.js
index 37399834987..343180497f4 100644
--- a/tests/routes/keyword-test.js
+++ b/tests/routes/keyword-test.js
@@ -1,13 +1,12 @@
 import { currentURL } from '@ember/test-helpers';
-import { setupApplicationTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
-import setupMirage from '../helpers/setup-mirage';
+import { setupApplicationTest } from 'cargo/tests/helpers';
+
 import { visit } from '../helpers/visit-ignoring-abort';
 
 module('Route | keyword', function (hooks) {
   setupApplicationTest(hooks);
-  setupMirage(hooks);
 
   test("shows an error message if the keyword can't be found", async function (assert) {
     await visit('/keywords/unknown');
diff --git a/tests/services/redirector-test.js b/tests/services/redirector-test.js
index e0499b2eb23..4fc905ff60f 100644
--- a/tests/services/redirector-test.js
+++ b/tests/services/redirector-test.js
@@ -1,9 +1,10 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import window from 'ember-window-mock';
 import { setupWindowMock } from 'ember-window-mock/test-support';
 
+import { setupTest } from 'cargo/tests/helpers';
+
 const URL = 'https://turbo.fish/';
 
 module('Service | Redirector', function (hooks) {
diff --git a/tests/unit/helpers/format-num-test.js b/tests/unit/helpers/format-num-test.js
index d088b2d3604..0368ec717a0 100644
--- a/tests/unit/helpers/format-num-test.js
+++ b/tests/unit/helpers/format-num-test.js
@@ -1,9 +1,10 @@
 import { render } from '@ember/test-helpers';
-import { setupRenderingTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
 import { hbs } from 'ember-cli-htmlbars';
 
+import { setupRenderingTest } from 'cargo/tests/helpers';
+
 module('Unit | Helper | format-num', function (hooks) {
   setupRenderingTest(hooks);
 
diff --git a/tests/utils/ajax-test.js b/tests/utils/ajax-test.js
index b3f3b6ac53d..d2a0e2c9905 100644
--- a/tests/utils/ajax-test.js
+++ b/tests/utils/ajax-test.js
@@ -1,6 +1,6 @@
-import { setupTest } from 'ember-qunit';
 import { module, test } from 'qunit';
 
+import { setupTest } from 'cargo/tests/helpers';
 import ajax, { AjaxError, HttpError } from 'cargo/utils/ajax';
 
 import setupMirage from '../helpers/setup-mirage';