Acceptance tests in Ember.js change the URL in the address bar - testing

Question

This has been an annoying problem for days now. As I start to try to write acceptance tests for my Ember app, when I use the visit() function, the URL is changed in the browser's address bar, so when I change a bit of code and the liveReload happens, it navigates off my test page to whatever page I had told it to visit in the tests.
To troubleshoot, I ember new'd a new app, created a /home route and template, and created an acceptance test for it, and it passed fine, without changing the URL in the address bar. I've compared the code in tests/helpers and it's the same, as is tests/index.html.
I've searched all over without coming across an answer. It's been hard enough for me to grok testing, but problems like this are just tangential, but very irritating. If anyone has a tip as to why this is happening, I'd be extremely grateful for a fix.
As an example, here's my one acceptance test. It passes, but the URL actually changes:
import Ember from 'ember';
import { module, test } from 'qunit';
import startApp from 'star/tests/helpers/start-app';
var application;
module('Acceptance: AddMilestone', {
beforeEach: function() {
application = startApp();
},
afterEach: function() {
Ember.run(application, 'destroy');
}
});
test('Adding milestones', function(assert)
visit('/projects/1234567/details');
andThen(function() {
assert.equal(currentPath(), 'project.details');
});
});

Answer 1

Look in config/environment.js for a block similar to this:
if (environment === 'test') {
// Testem prefers this...
ENV.baseURL = '/';
ENV.locationType = 'none';
// keep test console output quieter
ENV.APP.LOG_ACTIVE_GENERATION = false;
ENV.APP.LOG_VIEW_LOOKUPS = false;
ENV.APP.rootElement = '#ember-testing';
}
Is ENV.locationType set to none for your test environment?
If not, are you changing the locationType elsewhere in your app? Setting it to none leaves the address bar alone.