stringOutput produces wrong result when a certain line is not erased from the output

[saurabhdaware]

The CLI libraries add multiple erase line commands throughout to make the CLIs interactive. Which means, the raw string output looks something like this -

'? How old are you? › ? How old are you? › 1? How old are you? › 19✔ How old are you? … 19\n' +
          '{ value: 19 }\n' +
          '? What is your name? › ? What is your name? › s? What is your name? › sa? What is your name? › sau? What is your name? › saur? What is your name? › saura? What is your name? › saurab? What is your name? › saurabh✔ What is your name? … saurabh\n' +
          "{ value: 'saurabh' }"

This is far from the actual output that we see on screen.

In order to get the output similar to the thing we see on screen, we have to simulate the behaviour of erase_line command.

This means, every time we come across the ERASE_LINE command, we erase the output on that line.

This is the current logic of trimming the output-
https://github.com/saurabhdaware/cli-testing-library/blob/b26ed0a5e7ffdf5085472826f76900a60b678708/lib/cli-testing-library.js#L69-L71

I just move to last ERASE_LINE and consider things after that. This is however not the accurate and does not consider the scenario where we have multiple lines of outputs where a certain line is not erased.

Possible Algorithm:

• In for loop, look for ERASE_LINE command
• trim everything between (\n OR string start) to [ERASE_LINE]
• return the output

[saurabhdaware]

Resolved in v0.1.0