Documentation
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Index ¶
- func FillDisk(t *testing.T, path string)
- func InUnshareNamespace() bool
- func MountTmpfs(t *testing.T, sizeMiB int) string
- func MustLinux(t *testing.T)
- func ReexecInUserNamespace(t *testing.T, ctx context.Context) bool
- func SkipMacOS(t *testing.T)
- func SkipUnlessUnshareAvailable(t *testing.T)
- func SkipWindows(t *testing.T)
- func WriteFileTo(t *testing.T, name, data string)
- func WriteFileYaml(t *testing.T, data string) string
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func FillDisk ¶ added in v1.18.0
FillDisk writes 1MiB chunks to path until ENOSPC. Linux can defer ENOSPC reporting until Close (or fsync), so failure from either Write or Close satisfies the helper.
func InUnshareNamespace ¶ added in v1.18.0
func InUnshareNamespace() bool
InUnshareNamespace reports whether the current process is running inside an unshare user+mount namespace (e.g. invoked via `unshare -Umr`). Assumes the outer test runner is NOT root.
func MountTmpfs ¶ added in v1.18.0
MountTmpfs mounts a size-capped tmpfs at a fresh t.TempDir() and registers umount via t.Cleanup. Requires InUnshareNamespace() to be true.
func ReexecInUserNamespace ¶ added in v1.18.0
ReexecInUserNamespace returns false if already inside an unshare user+mount namespace (caller should run the rest of its test body). Otherwise re-runs this single integration test case inside one via `unshare -Umr`, then returns true on success so the caller can return without running the body twice, or calls t.Fatalf on subprocess failure. The subprocess's ports framework auto-detects it is inside a namespace (mapped euid 0) and probes ports from a high base to avoid collisions with the parent's reservations.
func SkipUnlessUnshareAvailable ¶ added in v1.18.0
SkipUnlessUnshareAvailable skips the test unless `unshare -Umr` is actually usable: `unshare` must be on PATH, unprivileged user namespaces must be enabled by the kernel, and the current process must be able to set up the uid_map mapping.
func SkipWindows ¶
func WriteFileTo ¶ added in v1.17.2
Types ¶
This section is empty.
Source Files