In unit test how can I compare original object with scope copy and avoid angular $$hashKey

Question

I can explain my question in one image.

In my unit test after some manipulations I want to check that $scope.data (first log message) is equal to original data object (second log message). I use mocha + chai and

expect(innerScope.data).to.deep.equal(data);

It is used in directive, so angular adds $$hashKey's to each object and of course my expectation is wrong. How can I test it in other way?

score 3 · Answer 1 · answered Sep 22 '15 at 14:41

3

I know this is not a new question but the jasmine.objectContaining method would help here Jasmine

answered Sep 22 '15 at 14:41

Connor Wyatt

166
11

score 0 · Accepted Answer · answered Apr 02 '15 at 00:29

0

There's only 2 ways I can think of:

1: Delete the $$hashKey property from the innerScope.data objects before the comparison:

innerScope.data.forEach(function (o) { delete o.$$hashKey });
expect(innerScope.data).to.deep.equal(data);

2: Loop through the objects and test that each object in innerScope.data contains the corresponding object in the original data, this will ignore any extra properties on the innerScope.data objects:

for (var i = 0; i < innerScope.data.length; i++) {
    expect(innerScope.data[i]).to.contain(data[i]);
}

answered Apr 02 '15 at 00:29

Jason Watmore

4,521
2
32
36

1

You can also use [angular.toJson](https://docs.angularjs.org/api/ng/function/angular.toJson) method on both objects to produce string without `$$hashKey` – Garbage May 03 '17 at 18:22
var clean = JSON.parse( angular.toJson( dirty ) ); – Herbert Marshall Jun 05 '19 at 15:43

In unit test how can I compare original object with scope copy and avoid angular $$hashKey

2 Answers2