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GeezerVison is showing github.com — Add hot reload regression test cases for implicit behavior by joe4dev · Pull Request #13183 · localstack/localstack

This repository was archived by the owner on Mar 23, 2026. It is now read-only.

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@joe4dev

@joe4dev joe4dev commented Sep 23, 2025 •
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Motivation

The heuristic in the AWS Toolkit integration (announced here) depends on the implicit assumption that it starts with hot-reloading (see code here). We should add a test to make that assumption explicit.

Changes

  • Add assertion for the CodeSha256 to start with hot-reloading
  • Add assertion for the GetFunction>Code>Location to return a valid file URI pointing to the local hot-reload path

sidenote: Path.from_uri requires Python 3.13 (https://docs.python.org/3/library/pathlib.html#pathlib.Path.from_uri)

disclaimer: I haven't tested the path assertion on Windows.

Testing

  1. Start LocalStack in container dev mode using python -m localstack.dev.run
  2. Run the test aws.services.lambda_.test_lambda_developer_tools.TestHotReloading.test_hot_reloading against the running container

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@joe4dev
Add hot reload regression test for implicit behavior
73d20a2
@joe4dev joe4dev added this to the 4.9 milestone Sep 23, 2025
@joe4dev joe4dev self-assigned this Sep 23, 2025
@joe4dev joe4dev added the semver: patch Non-breaking changes which can be included in patch releases label Sep 23, 2025
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github-actions Bot commented Sep 23, 2025 •
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Test Results - Preflight, Unit

22 258 tests  ±0   20 517 ✅ ±0   15m 30s ⏱️ - 1m 10s
     1 suites ±0    1 741 💤 ±0 
     1 files   ±0        0 ❌ ±0 

Results for commit 0a394fc. ± Comparison against base commit 4be950c.

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github-actions Bot commented Sep 23, 2025 •
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Test Results (amd64) - Acceptance

7 tests  ±0   5 ✅ ±0   3m 19s ⏱️ -1s
1 suites ±0   2 💤 ±0 
1 files   ±0   0 ❌ ±0 

Results for commit 0a394fc. ± Comparison against base commit 4be950c.

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@joe4dev joe4dev added the docs: skip Pull request does not require documentation changes label Sep 23, 2025
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Test Results (amd64) - Integration, Bootstrap

    5 files  ±    0      5 suites  ±0   2h 3m 25s ⏱️ - 32m 40s
3 444 tests  - 1 604  3 220 ✅  - 1 346  224 💤  - 258  0 ❌ ±0 
3 450 runs   - 1 604  3 220 ✅  - 1 346  230 💤  - 258  0 ❌ ±0 

Results for commit 0a394fc. ± Comparison against base commit 4be950c.

This pull request removes 1604 tests. 
tests.aws.scenario.bookstore.test_bookstore.TestBookstoreApplication ‑ test_lambda_dynamodb
tests.aws.scenario.bookstore.test_bookstore.TestBookstoreApplication ‑ test_opensearch_crud
tests.aws.scenario.bookstore.test_bookstore.TestBookstoreApplication ‑ test_search_books
tests.aws.scenario.bookstore.test_bookstore.TestBookstoreApplication ‑ test_setup
tests.aws.scenario.kinesis_firehose.test_kinesis_firehose.TestKinesisFirehoseScenario ‑ test_kinesis_firehose_s3
tests.aws.scenario.lambda_destination.test_lambda_destination_scenario.TestLambdaDestinationScenario ‑ test_destination_sns
tests.aws.scenario.lambda_destination.test_lambda_destination_scenario.TestLambdaDestinationScenario ‑ test_infra
tests.aws.scenario.loan_broker.test_loan_broker.TestLoanBrokerScenario ‑ test_prefill_dynamodb_table
tests.aws.scenario.loan_broker.test_loan_broker.TestLoanBrokerScenario ‑ test_stepfunctions_input_recipient_list[step_function_input0-SUCCEEDED]
tests.aws.scenario.loan_broker.test_loan_broker.TestLoanBrokerScenario ‑ test_stepfunctions_input_recipient_list[step_function_input1-SUCCEEDED]
…

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LocalStack Community integration with Pro

    2 files  ±    0      2 suites  ±0   1h 34m 0s ⏱️ - 24m 6s
3 420 tests  - 1 254  3 192 ✅  - 1 160  228 💤  - 94  0 ❌ ±0 
3 422 runs   - 1 254  3 192 ✅  - 1 160  230 💤  - 94  0 ❌ ±0 

Results for commit 0a394fc. ± Comparison against base commit 4be950c.

This pull request removes 1254 tests. 
tests.aws.scenario.bookstore.test_bookstore.TestBookstoreApplication ‑ test_lambda_dynamodb
tests.aws.scenario.bookstore.test_bookstore.TestBookstoreApplication ‑ test_opensearch_crud
tests.aws.scenario.bookstore.test_bookstore.TestBookstoreApplication ‑ test_search_books
tests.aws.scenario.bookstore.test_bookstore.TestBookstoreApplication ‑ test_setup
tests.aws.scenario.kinesis_firehose.test_kinesis_firehose.TestKinesisFirehoseScenario ‑ test_kinesis_firehose_s3
tests.aws.scenario.lambda_destination.test_lambda_destination_scenario.TestLambdaDestinationScenario ‑ test_destination_sns
tests.aws.scenario.lambda_destination.test_lambda_destination_scenario.TestLambdaDestinationScenario ‑ test_infra
tests.aws.scenario.loan_broker.test_loan_broker.TestLoanBrokerScenario ‑ test_prefill_dynamodb_table
tests.aws.scenario.loan_broker.test_loan_broker.TestLoanBrokerScenario ‑ test_stepfunctions_input_recipient_list[step_function_input0-SUCCEEDED]
tests.aws.scenario.loan_broker.test_loan_broker.TestLoanBrokerScenario ‑ test_stepfunctions_input_recipient_list[step_function_input1-SUCCEEDED]
…

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@joe4dev
Fix mount path assertion
0a394fc 
The test passed locally, but didn't match in CI: https://github.com/localstack/localstack/actions/runs/17940461254/job/51017715236?pr=13183#step:9:3229

```
/var/lib/localstack/tmp/hot-reload-342b262a
/tmp/localstack/tmp/hot-reload-342b262a
```

Using the `mount_path` should fix this issue in CI.
@joe4dev
joe4dev marked this pull request as ready for review September 23, 2025 12:14
@joe4dev
joe4dev requested review from dfangl, dominikschubert and gregfurman as code owners September 23, 2025 12:14
dfangl
dfangl approved these changes Sep 23, 2025
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@dfangl dfangl left a comment

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Makes sense to add an explicit assertion here!

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@joe4dev
joe4dev merged commit abb44e3 into main Sep 23, 2025
@joe4dev
joe4dev deleted the add-hot-reload-regression-test branch September 23, 2025 12:20
@alexrashed alexrashed added the notes: skip Pull request does not have to be mentioned in the release notes label Sep 24, 2025
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Reviewers

@dominikschubert dominikschubert Awaiting requested review from dominikschubert
@gregfurman gregfurman Awaiting requested review from gregfurman
1 more reviewer
@dfangl dfangl dfangl approved these changes
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@joe4dev joe4dev

Labels

docs: skip Pull request does not require documentation changes notes: skip Pull request does not have to be mentioned in the release notes semver: patch Non-breaking changes which can be included in patch releases

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3 participants

@joe4dev @dfangl @alexrashed
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