CommandContext

This context contains steps to test symfony commands

Given

`Given the next command input is <answer>`

Will answer the next upcoming question with .

When

`When I run command <command>`

Execute the given symfony command, including parsing of arguments.

Then

`Then the command has a return value of <code>`

Check the return code. 0 indicates a success, everything else an error.

`Then the command is successful`

Shortcut to check for return code 0.

`Then the command outputs <text>`

Check if the text is contained somewhere in the command's output.

`Then the command does not output <text>`

Make sure, that the given text is not in the command's output.