atoum:tldr:9ab68

The command "atoum -t ${tag}" is used to run the atoum unit testing framework with a specific tag.

Here is the breakdown of the command:

• "atoum" is the executable command for running the atoum testing framework.
• "-t" is an option flag that specifies that the following argument is the tag to be used.
• "${tag}" is a placeholder that represents the actual tag value you would provide when running the command. It is often replaced with a specific tag name or value.

By including the tag option and its value, the command instructs atoum to run only the tests that are associated with the specified tag. This can be useful when you have a large test suite and want to selectively run specific groups of tests based on their tags.