// all addresses should be unbound
	if len(remainingAddrs) != 0 {
		t.Errorf("Expected number of remaining bound addrs after cleanup to be %v. Got %v", 0, len(remainingAddrs))
	}
}

func Test_getFirstColumn(t *testing.T) {
	testCases := []struct {
		name        string
		fileContent string
		want        []string
		wantErr     bool
	}{
		{
			name: "valid content",