gstreamer/subprojects/gst-devtools/docs/gst-validate-test-file.md

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---
title: Test file
short-description: GstValidate test file
...
# GstValidate Test file
A `.validatetest` file describes a fully contained validate test case. It
includes the arguments of the tool supposed to be used to run the test as well
as possibly a [configuration](gst-validate-config.md) and a set of action to
describe the validate [scenario](gst-validate-scenarios.md).
# The file format
A validate test file requires a [`meta`](gst-validate-action-types.md?#meta) structure describing
the test and configuring it. The `meta` structure should be either the
first or the one following the `set-globals` structure. The `set-globals`
structures allows you to set global variables for the rest of the
`.validatetest` file and is a free form variables setter. For example you can
do:
``` yaml
set-globals, media_dir=$(test_dir)/../../media
```
## Tool arguments
In the case of [`gst-validate`](gst-validate.md) it **has to** contain an
`args` field with `gst-validate` argv arguments like:
``` yaml
# This is the default tool so it is not mandatory for the `gst-validate` tool
tool = "gst-validate-$(gst_api_version)",
args = {
# pipeline description
videotestrc num-buffers=2 ! $(videosink),
# Random extra argument
--set-media-info $(test-dir)/some.media_info
}
```
## Variables
Validate testfile will define some variables to make those files relocable:
* `$(test_dir)`: The directory where the `.validatetest` file is in.
* `$(test_name)`: The name of the test file (without extension).
* `$(test_name_dir)`: The name of the test directory (test_name with folder
separator instead of `.`).
* `$(validateflow)`: The validateflow structure name with the default/right
values for the `expectations-dir` and `actual-results-dir`
fields. See [validateflow](gst-validate-flow.md) for more
information.
* `$(videosink)`: The GStreamer videosink to use if the test can work with
different sinks for the video. It allows the tool to use
fakesinks when the user doesn't want to have visual feedback
for example.
* `$(audiosink)`: The GStreamer audiosink to use if the test can work with
different sinks for the audio. It allows the tool to use
fakesinks when the user doesn't want to have audio feedback
for example.