Give locksmith its own test suite

and ensure tests can be run on mac

[#145440343]

Author: Callisto13

store/locksmith/filesystem.go

@@ -1,4 +1,5 @@
 package locksmith // import "code.cloudfoundry.org/grootfs/store/locksmith"
+
 import "code.cloudfoundry.org/grootfs/groot"
 
 const ExclusiveMetricsLockingTime = "ExclusiveLockingTime"

store/locksmith/filesystem_test.go store/locksmith/filesystem_linux_test.gostore/locksmith/filesystem_test.go renamed to store/locksmith/filesystem_linux_test.go

@@ -0,0 +1,35 @@
+package locksmith_test
+
+import (
+	"os/user"
+	"strconv"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"testing"
+)
+
+var (
+	GrootUID uint32
+	GrootGID uint32
+)
+
+func TestManager(t *testing.T) {
+	RegisterFailHandler(Fail)
+
+	BeforeSuite(func() {
+		GrootUser, err := user.Lookup("groot")
+		Expect(err).NotTo(HaveOccurred())
+
+		grootUID, err := strconv.ParseUint(GrootUser.Uid, 10, 32)
+		Expect(err).NotTo(HaveOccurred())
+		GrootUID = uint32(grootUID)
+
+		grootGID, err := strconv.ParseUint(GrootUser.Gid, 10, 32)
+		Expect(err).NotTo(HaveOccurred())
+		GrootGID = uint32(grootGID)
+	})
+
+	RunSpecs(t, "Locksmith Suite")
+}