---
name: "sng_regress"
section: "1"
platform: "linux"
package: "sng"
version: "1.0.2-5"
release: "Debian 4.0 (Etch)"
platforms: ["linux"]
url: "https://new.carta.tech/sng_regress"
---

# sng\_regress(1)

a regression test harness for sng

## NAME

sng\_regress - a regression test harness for sng

## SYNOPSIS

**sng\_regress** \[*options*\] *files*...\

## DESCRIPTION

The **sng\_regress** program is designed to help with regression testing of the **sng** minilanguage.

Given SNG and PNG input files, **sng\_regress** will do round-trip conversions (SNG-\>PNG-\>SNG or vice-versa), and then compare the results. For PNG files, it is possible to visually verify the results.

## OPTIONS

- **-s**

  Stop on any regression failure. By default, errors are reported, but all files given on the command line are processed.

- **-e**

  Manually 'eyeball' the result of PNG regression tests. The resulting is  displayed with  **display** which is part of the  **ImageMagick** package.

## SEE ALSO

[**sng**(1)](/sng/1.md), [**display**(1)](/display/1.md), [**ImageMagick**(1)](/ImageMagick/1.md)\

## AUTHOR

This manual page was written by Wesley J. Landaker \<wjl@icecavern.net\>, for the Debian project (but may be used by others).