[python] Add ARM operation-templates nextLink paging coverage for mock API tests

[Copilot]

This updates the Python mock API suite to cover the ARM operation-templates paging scenario introduced in Azure/typespec-azure#5214. The tests now validate that post_action_paging consumes the nextLink page, not just the first page.

• Spec version alignment

  • Bumped @azure-tools/azure-http-specs in packages/http-client-python to 0.1.0-alpha.45-dev.3 so the new paging contract (@nextLink on MonitoredResourceListResponse.nextLink) is available to the test pipeline.

• Mock API paging assertions (sync + async)

  • Extended:
    • tests/mock_api/azure/test_azure_arm_operationtemplates.py
    • tests/mock_api/azure/asynctests/test_azure_arm_operationtemplates_async.py
  • test_paging_post_action_paging now asserts two items are returned and validates second-page content (vm2, sending_metrics=False), confirming continuation traversal.

• Changelog

  • Added an internal Chronus entry for @typespec/http-client-python describing the new nextLink paging coverage.

items = list(result)
assert len(items) == 2
assert items[0].id.endswith("/vm1")
assert items[1].id.endswith("/vm2")
assert items[1].sending_metrics is False

• Fixes [python] add test case for https://github.com/Azure/typespec-azure/pull/5214 #11723

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commit: babc026

[Copilot]

Pull request overview

This pull request updates the http-client-python mock API tests to validate ARM operation-templates POST action paging properly follows nextLink continuations, matching the updated azure-http-specs paging contract.

Changes:

• Extend sync and async mock API paging tests to assert a second page is fetched (2 items total) and validate second-page content (vm2, sending_metrics == False).
• Bump @azure-tools/azure-http-specs to 0.1.0-alpha.45-dev.3 so the updated paging shape (including nextLink) is available.
• Add a Chronus entry documenting the internal test-coverage update.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/http-client-python/tests/mock_api/azure/test_azure_arm_operationtemplates.py	Strengthens sync paging test by asserting second-page traversal and content.
packages/http-client-python/tests/mock_api/azure/asynctests/test_azure_arm_operationtemplates_async.py	Strengthens async paging test by asserting second-page traversal and content.
packages/http-client-python/package.json	Updates @azure-tools/azure-http-specs version to pick up the nextLink paging contract.
packages/http-client-python/package-lock.json	Locks the updated @azure-tools/azure-http-specs tarball/version and metadata.
.chronus/changes/python-spector-tests-arm-operationtemplates-nextlink-2026-8-19-6-0-0.md	Adds an internal changelog entry for the added paging coverage.

Files not reviewed (1)

• packages/http-client-python/package-lock.json: Generated file

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[github-actions]

All changed packages have been documented.

• ✅ @typespec/http-client-python

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@typespec/http-client-python - internal ✏️

Add sync and async mock API coverage for ARM operation templates POST action paging to validate nextLink pagination across pages.

[github-actions]

Python emitter diff

Baseline gh:3e0ad3379c45abe0d65648353f600a6427e4ab1e vs this PR.

Diff summary: 4 file(s), +4 / -4

Rendered diff: inline on the run summary, or the emitter-diff-html artifact.

Informational check (eng/emitter-diff); does not block the PR.

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 5 changed files in this pull request and generated no new comments.

Files not reviewed (1)

• packages/http-client-python/package-lock.json: Generated file