Move unix specific logic into _unix.go

Signed-off-by: Lantao Liu <lantaol@google.com>

pkg/server/helpers_test.go

@@ -114,39 +114,6 @@ func TestGetRepoDigestAndTag(t *testing.T) {
 	}
 }
 
-func TestGetCgroupsPath(t *testing.T) {
-	testID := "test-id"
-	for desc, test := range map[string]struct {
-		cgroupsParent string
-		expected      string
-	}{
-		"should support regular cgroup path": {
-			cgroupsParent: "/a/b",
-			expected:      "/a/b/test-id",
-		},
-		"should support systemd cgroup path": {
-			cgroupsParent: "/a.slice/b.slice",
-			expected:      "b.slice:cri-containerd:test-id",
-		},
-		"should support tailing slash for regular cgroup path": {
-			cgroupsParent: "/a/b/",
-			expected:      "/a/b/test-id",
-		},
-		"should support tailing slash for systemd cgroup path": {
-			cgroupsParent: "/a.slice/b.slice/",
-			expected:      "b.slice:cri-containerd:test-id",
-		},
-		"should treat root cgroup as regular cgroup path": {
-			cgroupsParent: "/",
-			expected:      "/test-id",
-		},
-	} {
-		t.Logf("TestCase %q", desc)
-		got := getCgroupsPath(test.cgroupsParent, testID)
-		assert.Equal(t, test.expected, got)
-	}
-}
-
 func TestBuildLabels(t *testing.T) {
 	configLabels := map[string]string{
 		"a": "b",