Bug/missing tests

[syedhasandigi]

Pull Request

Checklist

• Have you read Digital Catapult's Code of Conduct?
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.

PR Type

Please delete options that are irrelevant.

• Bug Fix

Linked tickets

https://digicatapult.atlassian.net/browse/NIDT-36

High level description

Integration/e2e test using npm-pack

Detailed description

integration test that imports @digicatapult/dtdl-parser by using npm-pack and npm install digicatapult-dtdl-parser-*.tgz

Describe alternatives you've considered

npm-link creates a symlink which is not representative of an npm-publish

[mattdean-digicatapult]

Suggesting a simplification by just importing with ../../. The only thing you might have to watch out for is a linting error