The document discusses testing Ember data transforms. It describes an API that returns date fields in an non-standard format, and creating a custom transform to standardize the dates. The author searches various resources but cannot find documentation on testing transforms. They finally find an example transform addon that shows transforms can be tested by serializing and deserializing sample data.

1. Testing Ember
Data Transforms
Sara Raasch

2. My API is dumb
Or at least it’s treatments of dates is

3. Api /litter/:id (I SELL PUPPIES WHAT DO YOU EXPECT)
Response
{
"litter":{
"id":1,
"publishedAt":"2017-01-13 00:00:00",
"birthDate":"2015-05-01",
"deletedAt":null,
"createdAt":"2016-08-16 15:07:36",
"updatedAt":"2016-08-16 15:07:36",
...
}
}
Uhh those dates though?
2015-01-01
2016-08-16 15:07:36
I guess I’m just supposed to know
we mean utc? My browser sure
doesn’t
Not ISO8601 :(
Dates don’t serialize back like
that

4. app/transforms/day.js

5. Great, my days are
dates now
How do I test this? Seems kinda important to
my app?

6. tests/unit/transforms/day-test.js

7. Uhh, ok thanks for that helpful boilerplate
I’ll check the ember docs
http://emberjs.com/api/data/classes/DS.Transform.html#conten
t
Uhh tells me how to make one, what it needs, nothing on
testing
I’ll check David’s blog, he knows everything
http://thejsguy.com/2015/11/23/a-look-into-ember-data-transf
orms.html
Tons of helpful info here, but nothing on testing

8. Ok one last look at a transform addon I was looking at
https://github.com/pk4media/ember-cli-moment-transform
Ok, that’s really easy. I feel real dumb.

9. Basically only two things you need to know to test a
transform
transform.deserialize(SOMEDATA) transform.serialize(SOMEDATA)

10. All is now right with the world

11. Keep in touch!
Sara Raasch
sara@sararaasch.com
@sararaasch on the
twitters