test(unikontainers): add unit tests for mount and shared_fs utilities#815
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Nachiket-Roy wants to merge 2 commits into
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test(unikontainers): add unit tests for mount and shared_fs utilities#815Nachiket-Roy wants to merge 2 commits into
Nachiket-Roy wants to merge 2 commits into
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Extract OS and unix syscalls (Mount, Mknod, Stat, Chmod, Open, Close, Chown, MkdirAll, and RunningInUserNS) to package-level hook variables. Add mount_test.go to cover tmpfs creation, device node setup, bind-mounts, parent private remounts, and flag accumulation. Related-to: urunc-dev#96 Signed-off-by: Nachiket Roy <nachiket.roy.2@gmail.com>
Extract spawnProcess to a package-level spawnProcessHook. Add shared_fs_test.go to cover memory size boundaries (with decimal MB divisor), path adjustment, preStart process parameter validation, and postSetup happy/failure paths. Related-to: urunc-dev#96 Signed-off-by: Nachiket Roy <nachiket.roy.2@gmail.com>
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Description
This PR introduces unit tests to cover previously untested logic in the
mount.goandshared_fs.gofiles of theunikontainerspackage.To facilitate testing without requiring root privileges or mutating the host filesystem/processes:
Mount,Mknod,Stat,Chmod,Open,Close,os.Chmod,os.MkdirAll,os.Chown,RunningInUserNS, andspawnProcess) into package-level hook variables insidemount.goandshared_fs.go.mount_test.go): Added coverage forcreateTmpfs,setupDev(both namespace check and failure branches),fileFromHost(both bind mount/remount and copy branches),mapMountFlag,mapRootfsPropagationFlag,prepareRoot, andmountVolumes(asserting exact flag accumulation and propagation operations).shared_fs_test.go): Added coverage for path adjustment, memory-based tmpfs allocation size (confirming decimal MB divisor),preStart(directly validating construction of options and arguments), andpostSetup(complete happy paths for VirtioFS/9pfs and error wrapping paths for all steps).Note: Thread safety has been preserved. Tests that temporarily mutate package-level variables are serialized, while pure non-mutating tests continue to run in parallel (
t.Parallel()).Related issues
How was this tested?
Tested locally by verifying correct format, static analysis, and race-detector execution:
go fmt ./pkg/unikontainers/... go vet ./... go test -race ./pkg/unikontainers/...Output:
LLM usage
Assisted by Claude sonnet .
Checklist
make lint).make test_ctr,make test_nerdctl,make test_docker,make test_crictl).