[Resource] Fix #33921: az bicep snapshot: Preserve linked resource ID format in bicepparam snapshot to avoid nondeterministic uniqueString regeneration

[Copilot]

Related command

az bicep snapshot

Description

Snapshots forwarded Azure CLI’s generated deployment name, causing Bicep to evaluate deployment().name and nested uniqueString() expressions differently on each run.

• Filter the CLI-generated azurecli<timestamp><random> deployment name from snapshot invocation.
• Continue forwarding explicitly supplied deployment names.
• Add regression coverage for generated and similarly named explicit values.

az bicep snapshot ... → bicep snapshot ...  # no generated --deployment-name

Testing Guide

az bicep snapshot --file main.bicepparam --mode Overwrite
az bicep snapshot --file main.bicepparam --mode Validate

History Notes

[Resource] az bicep snapshot: Preserve unresolved deployment-name expressions in snapshots.

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• Fixes az bicep snapshot generates unique strings every run #33921

[azure-client-tools-bot-prd]

Hi Copilot,
Since the current milestone time is less than 7 days, this pr may not catch up with this release.

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[azure-client-tools-agent]

Live test results — azdev test --live --series (changed test files only)

✅ PASS

Selectors: test_resource_bicep (module)
PR head ref: copilot/fix-az-bicep-snapshot-unique-strings
PR head sha: 2aa42913bac17934fe4991d648313079d056569b
PR base ref: dev
New test files in PR: false

Changed test files run

src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py

Workflow run: https://github.com/Azure/issue-sentinel/actions/runs/32163418268

Last 80 lines of azdev output

=============
| Run Tests |
=============


=====================
| Discovering Tests |
=====================

/home/runner/work/issue-sentinel/issue-sentinel/azure-cli/src/azure-cli/azure/cli/command_modules/vm/tests/latest/test_vm_commands.py:13640: SyntaxWarning: invalid escape sequence '\]'
  self.cmd('vmss application set -g {rg} -n {vmss} --app-version-ids {vid1} {vid2} --enable-automatic-upgrade True\]', checks=[
/home/runner/work/issue-sentinel/issue-sentinel/azure-cli/src/azure-cli/azure/cli/command_modules/identity/tests/latest/test_identity.py:18: SyntaxWarning: invalid escape sequence '\{'
  'resource_restriction_compute': '\{"providers":\["Microsoft.Compute"\]\}',
/home/runner/work/issue-sentinel/issue-sentinel/azure-cli/src/azure-cli/azure/cli/command_modules/identity/tests/latest/test_identity.py:19: SyntaxWarning: invalid escape sequence '\{'
  'resource_restriction_empty': '\{"providers":\[\]\}'

test index updated: /home/runner/.azdev/env_config/home/runner/work/issue-sentinel/issue-sentinel/.venv/test_index/latest.json

Test on modules: test_resource_bicep

WARNING: RUNNING TESTS LIVE
The tests are set to run against current profile "latest"
============================= test session starts ==============================
platform linux -- Python 3.12.13, pytest-9.1.1, pluggy-1.6.0 -- /home/runner/work/issue-sentinel/issue-sentinel/.venv/bin/python
cachedir: .pytest_cache
rootdir: /home/runner/work/issue-sentinel/issue-sentinel/azure-cli/src/azure-cli
plugins: forked-1.7.5, xdist-3.8.0
collecting ... collected 22 items

azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_bicep_version_greater_than_or_equal_to_use_binary_from_path PASSED [  4%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_bicep_version_greater_than_or_equal_to_use_cli_managed_binary PASSED [  9%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_ensure_bicep_installation_skip_download_if_installed_version_matches_release_tag PASSED [ 13%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_ensure_bicep_installation_skip_download_if_use_binary_from_path_is_true_and_no_version_is_specified PASSED [ 18%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_get_bicep_download_url_returns_correct_urls PASSED [ 22%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_run_bicep_command_check_version PASSED [ 27%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_run_bicep_command_check_version_cache_read_write PASSED [ 31%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_run_bicep_command_raise_error_if_bicep_cli_not_found_when_use_binary_from_path_is_true PASSED [ 36%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_run_bicep_command_raise_error_if_not_installed_and_not_auto_install PASSED [ 40%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_run_bicep_command_use_bicep_cli_from_path_in_ci PASSED [ 45%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_use_bicep_cli_from_path_false_after_install PASSED [ 50%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_validate_target_scope_raise_error_if_target_scope_does_not_match_deployment_scope PASSED [ 54%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicep::test_validate_target_scope_success_if_target_scope_matches_deployment_scope PASSED [ 59%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicepSnapshot::test_snapshot_bicep_file_errors_when_bicep_too_old PASSED [ 63%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicepSnapshot::test_snapshot_bicep_file_ignores_generated_deployment_name PASSED [ 68%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicepSnapshot::test_snapshot_bicep_file_passes_all_optional_args PASSED [ 72%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicepSnapshot::test_snapshot_bicep_file_passes_minimum_args PASSED [ 77%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicepSnapshot::test_snapshot_bicep_file_passes_similarly_named_deployment_name PASSED [ 81%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicepRun::test_run_bicep_cli_passthrough_forwards_split_args PASSED [ 86%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicepRun::test_run_bicep_cli_passthrough_preserves_quoted_args PASSED [ 90%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicepRun::test_run_bicep_cli_passthrough_preserves_windows_path_backslashes PASSED [ 95%]
azure-cli/src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py::TestBicepRun::test_run_bicep_cli_passthrough_raises_when_command_empty PASSED [100%]

- generated xml file: /home/runner/work/issue-sentinel/issue-sentinel/test-output/results.xml -
============================= 22 passed in 21.88s ==============================

Posted by agent-assist live-test workflow.

[azure-client-tools-agent]

All CI checks passed and the live test succeeded for this PR. No issues found.

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Posted by agent-assist (autonomous bug-fix pipeline).

[microsoft-github-policy-service]

🔔 Routing this PR to @Azure/act-identity-squad.

[Yong Zhang (yonzhan)]

Resource