fix(core): multiple container start invocations with custom labels#769
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When invoking .start() multiple times on the same DockerContainer instance, the call fails with "ValueError: The org.testcontainers namespace is reserved for internal use" error. Example code: ``` from testcontainers.core.container import DockerContainer container = DockerContainer("alpine:latest").with_kwargs(labels={}) container.start() container.stop() container.start() ``` The fix is to update labels for the container in a copy of the user-provided dictionary, so that: * the code doesn't mutate user structures * avoid side effects, allowing for multiple .start() invocations
alexanderankin changed the title alexanderankin changed the title 
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@## main #769 +/- ## ======================================= Coverage ? 85.32% ======================================= Files ? 12 Lines ? 668 Branches ? 105 ======================================= Hits ? 570 Misses ? 75 Partials ? 23 ☔ View full report in Codecov by Sentry. |
alexanderankin approved these changes Feb 11, 2025
alexanderankin merged commit 3e783a8 into testcontainers:main 11 of 12 checks passed
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alexanderankin pushed a commit that referenced this pull request Mar 5, 2025
🤖 I have created a release *beep* *boop* --- ## [4.9.2](testcontainers-v4.9.1...testcontainers-v4.9.2) (2025-02-26) ### Bug Fixes * Change env var disabling OpenSearch security plugin ([#773](#773)) ([2620d7f](2620d7f)) * **core:** create_label test ([#771](#771)) ([7517297](7517297)) * **core:** multiple container start invocations with custom labels ([#769](#769)) ([3e783a8](3e783a8)) * **keycloak:** Fixed Keycloak testcontainer for latest version v26.1.0 ([#766](#766)) ([b1642e9](b1642e9)) * **scylla:** scylla get cluster method ([#778](#778)) ([46913c1](46913c1)) ### Documentation * Fixed typo in CONTRIBUTING.md ([#767](#767)) ([f0bb0f5](f0bb0f5)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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When invoking
.start()multiple times on the sameDockerContainerinstance, the call fails withValueError: The org.testcontainers namespace is reserved for internal useerror.Example code:
The fix is to update labels for the container in a copy of the user-provided dictionary, so that: