currentURL fails in Ember 1.12.0-beta.1 before calls to visit

[backspace]

TLDR: calling currentURL() in acceptance tests before any calls to visit() worked in Ember 1.11 but throws an error in Ember 1.12.0-beta.1.

I have an acceptance test that interacts with a modal-like search interface that is accessible from some routes in the application. I wrote some helper methods to reduce repetition in the tests, they look something like this:

var searchFor = function(query) {
  showSearch();

  fillIn('.search-pane input', query);
};

var showSearch = function() {
  andThen(function() {
    if (currentURL().indexOf('path with access to the search') === -1) {
      visit('path with access to the search')
    }
  });

  // Show the search if not already showing
  andThen(function() {
    if (find('.search-pane input').length === 0) {
      click('.search div');
    }
  });
};

This way I can searchFor('something') and not have to care whether I’m at the right path or whether the search interface is currently showing.

In Ember 1.12.0-beta.1, I can no longer check currentURL() to see whether I need to navigate somewhere before searching because it throws undefined is not a function at this line, specifically from the call to property_get(router, 'location').

Is this a desired change? Maybe it makes sense to require a call to visit() before checking the URL, but it was an unexpected change to work around. If a call to visit() is to be required, maybe there could be an error message to that effect?

Some demonstrative JS Bins, adapted from the other current currentURL issue:

Working in Ember 1.11.0
Broken in Ember 1.12.0-beta.1
Still broken after #10805 (hopefully I have the right script tags there, it’s also copied from the other issue)

[rwjblue]

Fixed by #11201.