func TestMustGetLocalIP4(t *testing.T) {
	testCases := []struct {
		expectedIPList set.StringSet
	}{
		{set.CreateStringSet("127.0.0.1")},
	}

	for _, testCase := range testCases {
		ipList := mustGetLocalIP4()
		if testCase.expectedIPList != nil && testCase.expectedIPList.Intersection(ipList).IsEmpty() {
			t.Fatalf("host: expected = %v, got = %v", testCase.expectedIPList, ipList)
		}
	}
}