Request Matching with '='

[ashanka-singh-qatalog]

Hi Shubhendu, 
Greetings! 

I have recently started using https://testinggospels.github.io/camouflage/  and I am finding it very useful. 
I have one query here, In the request matching section Request-match

When I try to perform {{#if request.query.task='1234'}} in my GET.mock file I see below error:

Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', got 'EQUALS'.

Do you have any suggestions around this? Basically, I have different task-id value and I want to send mock based on the Id. However = doesn't seem to work for me.

[shubhendumadhukar]

Hi Ashanka,

Until recently I too was under assumption that this would work, but it appears handlebars' if helper does not support comparisions. (I need to update Camouflage docs)

See https://stackoverflow.com/questions/34252817/handlebarsjs-check-if-a-string-is-equal-to-a-value

There are two ways to achieve your use case:

• Use either code or inject helper. See example in this issue; OR
• Create your own custom helper and load it while starting Camouflage

Since this is such a common use case, I think it would be best to have a helper included as part of Camouflage. It would be great if you could create a feature request issue for the same.

[shubhendumadhukar]

I worked out a quick and dirty way of loading an external custom helper for this use case.

• If you already have a JSON file in your project to load external handlerbars, add following json object to it. If not, set it up referring to this guide

  {
    "name": "is",
    "logic":"(()=>{ logger.info(JSON.stringify((context.hash))); if(context.hash.value1===context.hash.value2) {return context.fn(this);} else {return context.inverse(this);} })()"
  }

• Restart Camouflage
• Use following as content of your mock file

HTTP/1.1 200 OK

{{#is value1=request.query.name value2='Shubhendu'}}
   Response if true
{{else}}
   Response if false
{{/is}}

• Modify value1 and value2 accordingly.

Let me know if this works!

[ashanka-singh-qatalog]

Hi Shubhendu! Thanks! That worked perfectly.

Just something I noticed. If I try to evaluate this for a POST request with the the value coming from request.body.name instead of request.query.name, the check works the first time, but all subsequent calls end up with the same result as the first run irrespective of the request.body.name value from subsequent calls.

For instance,

custom_handlerbars.json:

[
  {
    "name": "is",
    "logic": "(()=>{ logger.info(JSON.stringify((context.hash))); if(request.body.name===context.hash.value2) {return context.fn(this);} else {return context.inverse(this);} })()"
  }
]

POST.mock:

HTTP/1.1 200 OK
Content-Type: application/json; charset=UTF-8

{{#is value2='Shubhendu'}}
   {"branch": "if"}
{{else}}
   {"branch": "else"}
{{/is}}

$ echo '{"name": "Shubhendu"}' | curl -XPOST -H "Content-Type: application/json" http://localhost:8080/foo
{"branch": "if"}

$ echo '{"name": "Something"}' | curl -XPOST -H "Content-Type: application/json" http://localhost:8090/foo
{"branch": "if"}

Now, if I restart camouflage and try the same tests in the reverse order:

$ echo '{"name": "Something"}' | curl -XPOST -H "Content-Type: application/json" http://localhost:8090/foo
{"branch": "else"}

$ echo '{"name": "Shubhendu"}' | curl -XPOST -H "Content-Type: application/json" http://localhost:8090/foo
{"branch": "else"}

Just something I noticed. Your solution works perfectly for my requirements. Thank you!

[shubhendumadhukar]

I'd recommend upgrading to 0.5.0. It was an issue (#59 for context) due to cache. In 0.5.0, you can disable cache in config.yml. That should help.

Also the is helper should have following syntax:

{{#is value1=request.body.name value2='Shubhendu'}}

I assuming this was a typo in your previous comment.

[shubhendumadhukar]

is helper is now going to be included with Camouflage's installation, 0.5.11 onwards.

[ashanka-singh-qatalog]

is helper is now going to be included with Camouflage's installation, 0.5.11 onwards.

This is Awsome !! thanks a lot for doing this.