feat: Add MongoDB Atlas Local module - #1780
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Included review availability: This review used your included allowance. Your plan provides up to 8 included reviews per hour; 6 remain after this review. WalkthroughAdds a .NET MongoDB Atlas Local module with builder and container APIs, authentication and initialization options, connection-string and script-execution support, integration tests, and documentation. ChangesMongoDB Atlas Local module
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant SeedTest as MongoDbAtlasLocalSeedTest
participant Builder as MongoDbAtlasLocalBuilder
participant Container as MongoDbAtlasLocalContainer
participant Atlas as MongoDB Atlas Local
participant Search as AtlasSearch
SeedTest->>Builder: Configure credentials, init scripts, and telemetry
SeedTest->>Container: Build and start container
Container->>Atlas: Start with configured environment and init scripts
SeedTest->>Container: Get connection string
SeedTest->>Atlas: Connect and query seeded collection
Search->>Atlas: Poll index queryable status and search results
Atlas-->>Search: Index status and matching titles
Merge Risk: ⚪ Minimal · up to This adds a new, self-contained MongoDB Atlas Local module with no changes to existing modules. No actionable merge-blocking risk was identified. 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation Issue [
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Adds Testcontainers.MongoDbAtlasLocal for the mongodb/mongodb-atlas-local image, which bundles mongod with mongot so Atlas Search and Atlas Vector Search can be tested without an Atlas cluster. - Waits on the image's `runner healthcheck`, which covers mongod, the replica set, mongot and finished init scripts. - Connection string uses directConnection=true, the single-node replica set advertises the container hostname. - Optional root credentials (WithUsername/WithPassword). - Seeding via WithInitDatabase, WithInitScript and WithInitScriptContent, rejecting file names the container would silently skip. - WithNoTelemetry sets DO_NOT_TRACK=1. Relates testcontainers#1779
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Actionable comments posted: 2
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at
@src/Testcontainers.MongoDbAtlasLocal/MongoDbAtlasLocalContainer.cs:
- Line 36: Update the endpoint.Query assignment in MongoDbAtlasLocalContainer to
omit the leading question mark, so UriBuilder.Query produces the
directConnection=true query correctly on .NET Framework.
- Line 50: Update the script encoding in the CopyAsync call within
MongoDbAtlasLocalContainer so scriptContent is encoded explicitly as UTF-8,
preserving characters across supported runtimes.
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📒 Files selected for processing (23)
Testcontainers.dicTestcontainers.sln.DotSettingsTestcontainers.slnxdocs/modules/index.mddocs/modules/mongodb-atlas-local.mdmkdocs.ymlsrc/Testcontainers.MongoDbAtlasLocal/.editorconfigsrc/Testcontainers.MongoDbAtlasLocal/MongoDbAtlasLocalBuilder.cssrc/Testcontainers.MongoDbAtlasLocal/MongoDbAtlasLocalConfiguration.cssrc/Testcontainers.MongoDbAtlasLocal/MongoDbAtlasLocalConnectionStringProvider.cssrc/Testcontainers.MongoDbAtlasLocal/MongoDbAtlasLocalContainer.cssrc/Testcontainers.MongoDbAtlasLocal/Testcontainers.MongoDbAtlasLocal.csprojsrc/Testcontainers.MongoDbAtlasLocal/Usings.cstests/Testcontainers.MongoDbAtlasLocal.Tests/.editorconfigtests/Testcontainers.MongoDbAtlasLocal.Tests/.runs-ontests/Testcontainers.MongoDbAtlasLocal.Tests/AtlasSearch.cstests/Testcontainers.MongoDbAtlasLocal.Tests/Dockerfiletests/Testcontainers.MongoDbAtlasLocal.Tests/MongoDbAtlasLocalBuilderTest.cstests/Testcontainers.MongoDbAtlasLocal.Tests/MongoDbAtlasLocalContainerTest.cstests/Testcontainers.MongoDbAtlasLocal.Tests/MongoDbAtlasLocalSeedTest.cstests/Testcontainers.MongoDbAtlasLocal.Tests/Seed/01-movies.jstests/Testcontainers.MongoDbAtlasLocal.Tests/Testcontainers.MongoDbAtlasLocal.Tests.csprojtests/Testcontainers.MongoDbAtlasLocal.Tests/Usings.cs
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On .NET Framework, UriBuilder.Query always prepends '?', so "?directConnection=true" produced "??directConnection=true" and the driver ignored the option. Encoding.Default is the ANSI code page there, so ExecScriptAsync could corrupt non-ASCII script content.
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What does this PR do?
Adds the
Testcontainers.MongoDbAtlasLocalmodule for themongodb/mongodb-atlas-localimage, aligned with the existing Java (MongoDBAtlasLocalContainer) and Go (mongodb/atlaslocal) implementations.UntilCommandIsCompleted("runner", "healthcheck"). The image's runner checks mongod, the replica set, mongot (the Atlas Search process) and that init scripts have finished. Calling it directly makes the container ready after ~9 s. The image's ownHEALTHCHECKonly runs its first probe after 30 s.mongodb://[user:pass@]host:port/?directConnection=true. The deployment is a single-node replica set that advertises the container hostname, which the test host cannot resolve.WithUsername/WithPassword(MONGODB_INITDB_ROOT_*). Authentication is off by default, matching Java/Go. With credentials, mongod runs with--authand rejects unauthenticated clients, which a test covers.WithInitDatabasesetsMONGODB_INITDB_DATABASE.WithInitScript(path)andWithInitScriptContent(fileName, content)copy scripts to/docker-entrypoint-initdb.d/..js/.sh, so the builder rejects other names and path separators up front.WithNoTelemetrysetsDO_NOT_TRACK=1.ExecScriptAsync: runs a script via the bundledmongosh, likeMongoDbContainer.docs/modules/mongodb-atlas-local.md, an mkdocs nav entry and a row in the module table.New-module conventions followed: no obsolete default-image constant or parameterless constructor (as in the Temporal module), a test
Dockerfilepinned by digest,.runs-on, and dictionary entries.Why is it important?
MongoDB Atlas Local is already listed in the modules registry for Java and Go, but .NET had no module for it. The existing MongoDb module targets the community
mongoimage, which cannot run Atlas Search ($search) or Atlas Vector Search ($vectorSearch).Related issues
The issue asked whether this should be a separate package or a second builder in
Testcontainers.MongoDb. I went with a separate package because the configuration hardly overlaps: different image, readiness, credential variables, and no replica-set setup. I'm happy to move it if you prefer.How to test this PR
21 tests:
ExecScriptAsyncand an Atlas Search round trip, each with and without credentialsWithNoTelemetryThe full solution builds via
./build.shwith 0 warnings, andmkdocs build --strictpasses.Follow-ups
docs/modules/index.mdis wider than the others ("MongoDB Atlas Local" exceeds the column), similar to the Aspire dashboard row. I didn't want to re-pad the whole table in this PR.Summary by CodeRabbit