Connecting test name and its associated test value when pulling information from QATrack+ API

[min yang]

Hi everyone,            

            Are there a way to connect test name with input test value when extracting information from QATrack+ API? From API, under Test Instance List, there is a “json_value” associated with each Test instance, it’s “null” for all the tests. Could we generate a value or string to replace the “null”?

Thank you

Min

[Randle Taylor]

To get the test associated with a test instance, you need to fetch the associated unit_test_info record, then from that fetch the associated test record from that.  So if your json object for your test instance looks like:

{
    "url": "http://127.0.0.1:8000/api/qc/testinstances/1/",

    ...
    "value": 564.0,
    "string_value": null,
    "date_value": null,
    "datetime_value": null,
    "json_value": null,

    ....
    "unit_test_info": "http://127.0.0.1:8000/api/qc/unittestinfos/19/",

    ...
}

Then you need to fetch the unit_test_info url which will return a json object like:

{
    "url": "http://127.0.0.1:8000/api/qc/unittestinfos/19/",
    "active": true,
    "unit": "http://127.0.0.1:8000/api/units/units/1/",
    "test": "http://127.0.0.1:8000/api/qc/tests/19/",
    "reference": "http://127.0.0.1:8000/api/qc/references/21/",
    "tolerance": "http://127.0.0.1:8000/api/qc/tolerances/1/",
    "assigned_to": "http://127.0.0.1:8000/api/auth/groups/1/"
}

and then you can fetch the test record which will allow you to grab the name:

{
    "url": "http://127.0.0.1:8000/api/qc/tests/19/",
    "name": "100 kVp Cone D, Filter F3, 30 MU",
    "display_name": "",
    "slug": "f3d",
    "description": "",
    "procedure": "",
    "chart_visibility": true,

    ...

}

Typically if you want the value of the test, you will use the 'value' attribute for numerical results, or the "string_value" for string type tests. 

This does require quite a few requests to the server when fetching data for lots of test lists instances so you may want to cache some of the results (e.g. the test name results for a given unit_test_info) if you're fetching lots of data.

Hope that helps,

Randy

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