[BUG] Yamlinc must fail when $include path was't found

[svmk]

Version: v0.0.65
Steps to reproduce:

1. Create file main.yml

some_key: "some_value"
some_data:
    $include: included_file_that_does_not_exists.yml

2. Run yamlinc main.yml && cat main.inc.yml
   Output:

## --------------------
## DON'T EDIT THIS FILE
## --------------------
## Engine: [email protected]
## Source: main.yml

some_key: some_value
some_data: {}

Expected result:
Yamlinc must exit with status 1 and print error message: "Included file included_file_that_does_not_exists.yml was't found"

[justinnichols]

v0.1.1 also exhibits this behavior. I agree that this should notify the user, but there may be use cases where not finding a file is the behavior the user would want. I suggest that it should warn the user that a file (or files) weren't found for inclusion, instead of erroring.

The other issue I see is that it's putting {} in its place (indicating an empty map). Should this be an empty string (assuming it won't error and only warn)?

Thoughts?

[francescobianco]

Hi @svmk @justinnichols
there is a news about this in version 0.1.5
we can use '--strict' option in commad-line

The strict mode stop if 'Problem' occur during runtime (e.g. Syntax error or missing files)
To respect your chain use this:

$ yamlinc --strict main.yml && cat main.inc.yml

On the next day I work to found a solution for {}