.TEST File

The test file extension can be used as a testing, sample, test file etc.

So it can be various data file type, simple text, programmer's source code file or anything else.

How to open:

First try to open it by any text viewer if it is text file type or find file headers to recognize this file type.

How to convert:

Conversion is not possible due to lack of information about this file format and it can be anything.