Add QualityTest script type and contracts for it

[marijnvanderhorst]

Proposed changes

Add QualityTestScript contract and other contracts that can be used for implementing them. See readme for more details.

Fixes AB#383.

Types of changes

What types of changes does your code introduce to this repository?

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Testing

Explain here how to run your unit tests, and explain how to execute manual testing.

Unit testing

n/a

Manual testing

Install using

pip install pricecypher-sdk==0.5.0rc2.dev0

Further comments

n/a

[levykort1]

Looks good to me!

[marijnvanderhorst]

@EmielSchmeink

Some additional context. One test script has been created that implements this new contract of the SDK already, see this PR.

That script is then executed by the script service, which encodes the output to JSON. This JSON output is then visualized in manager 2.0. For a dev version that visualizes the response see this page https://manager.dev.pricecypher.com/#/data_quality for dataset 'Demo 2.0'. Then click on 'Completeness' within the 'Data quality scorecard'. That should make the hierarchy of multiple results within elements within tests within a test suite clearer, I think.

[EmielSchmeink]

Looks good!