Add subset operators for validating list-valued fields (is-subset, is-subset-ci)

[michalis1]

Environment

• jdiff version: 1.0.1

Proposed Functionality

The current operator check in jdiff supports comparisons for scalar values (e.g., numeric, boolean, string) but does not provide a way to validate list-valued fields.

In some cases, the extracted value from extract_data_from_json() is itself a list, and we want to validate that this list is contained within a predefined reference set.

Example JSON:

[
  {
    "id": "DOMAIN1.COMPANY.COM",
    "include_trusted_domains": [
      "COMPANY.COM",
      "domain1.company.com",
      "domain2.company.COM",
      "domain3.company.com",
      "test.com"
    ]
  }
]

Example check:

We want to verify that include_trusted_domains is a subset of an allowed list:

[
"COMPANY.COM",
"domain1.company.com",
"domain2.company.com",
"domain3.company.com",
"domain4.company.com",
"domain5.company.com",
"test.com",
"test1.com",
"test2.com"
]