# The `Test_GROUP` Instrument

*McXtrace: Tests that GROUP logic works as expected*

## Identification

- **Site:** Tests_grammar
- **Author:** Erik Knudsen, Peter Willendrup
- **Origin:** DTU
- **Date:** 2021/09/30

## Description

```text
Unit test for the GROUP logic
```

## Input parameters

Parameters in **boldface** are required; the others are optional.

| Name | Unit | Description | Default |
|------|------|-------------|---------|
| SLITW | m | Width of the GROUP'ed slits | 1e-6 |
| SIGNI | 1 | Which slit should be hit (left or right) | 1 |

## Links

- [Source code](Test_GROUP.instr) for `Test_GROUP.instr`.

---