Added indexes tests for $createIndexes

[vic-tsang]

This PR contains

• indexes tests for $createIndexes

Assumptions: I didn't want to convolute the test with listIndexes to verify if the index is indeed created. I have assumed the numIndexesBefore and numIndexesAfter is working correctly after the api call.

Ref:

• Issue Add compatibility test for core: indexes (14 total) #27

[manojnks]

Missing important coverage:

• Compound index with partialFilterExpression — currently partial is only tested on single-field indexes.
• partialFilterExpression with $nor / $not — not supported per docs; should error (currently missing from errors file).
• partialFilterExpression referencing a field not in the index key — allowed, but worth testing.
• Hidden index + dropIndexes — hidden indexes can still be dropped; no test.
• Creating an index that matches an existing hidden one — behavior may differ.

[vic-tsang]

added

[eerxuan]

Hidden index + dropIndexes

it should be covered in dorpIndex test, and it already covered.Please remove it here

[documentdb-triage-tool]

🤖 Auto-triaged by documentdb-triage-tool.

Applied: compatibility test, enhancement
Project fields suggested: Component test-coverage · Priority P2 · Effort XL · Status Needs Review
Confidence: 0.85 (mixed)

Reasoning

component from path globs (test-coverage, test-framework); effort from diff stats (2114+0 LOC, 11 files); LLM: Adds new compatibility test cases for $createIndexes, expanding test coverage for an important index management feature.

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