diff --git a/internal/app/spruntime_test.go b/internal/app/spruntime_test.go
new file mode 100644
index 0000000..2b65048
--- /dev/null
+++ b/internal/app/spruntime_test.go
@@ -0,0 +1,40 @@
+package app
+
+import (
+	"testing"
+
+	"hakurei.app/container"
+	"hakurei.app/container/bits"
+	"hakurei.app/container/fhs"
+	"hakurei.app/container/stub"
+	"hakurei.app/hst"
+	"hakurei.app/system"
+	"hakurei.app/system/acl"
+)
+
+func TestSpRuntimeOp(t *testing.T) {
+	t.Parallel()
+	config := hst.Template()
+
+	checkOpBehaviour(t, []opBehaviourTestCase{
+		{"success", func(bool, bool) outcomeOp {
+			return spRuntimeOp{}
+		}, hst.Template, nil, []stub.Call{
+			// this op configures the system state and does not make calls during toSystem
+		}, newI().
+			Ensure(m("/proc/nonexistent/tmp/hakurei.0/runtime"), 0700).
+			UpdatePermType(system.User, m("/proc/nonexistent/tmp/hakurei.0/runtime"), acl.Execute).
+			Ensure(m("/proc/nonexistent/tmp/hakurei.0/runtime/9"), 0700).
+			UpdatePermType(system.User, m("/proc/nonexistent/tmp/hakurei.0/runtime/9"), acl.Read, acl.Write, acl.Execute), nil, nil, insertsOps(nil), []stub.Call{
+			// this op configures the container state and does not make calls during toContainer
+		}, &container.Params{
+			Ops: new(container.Ops).
+				Tmpfs(fhs.AbsRunUser, 1<<12, 0755).
+				Bind(m("/proc/nonexistent/tmp/hakurei.0/runtime/9"), m("/run/user/1000"), bits.BindWritable),
+		}, paramsWantEnv(config, map[string]string{
+			"XDG_RUNTIME_DIR":   "/run/user/1000",
+			"XDG_SESSION_CLASS": "user",
+			"XDG_SESSION_TYPE":  "tty",
+		}, nil), nil},
+	})
+}