EtcdVersions                  map[string][]string
	KubeletVersions               map[string][]string
}

// GetAvailableUpgrades fetches all versions from the specified VersionGetter and computes which
// kinds of upgrades can be performed
func GetAvailableUpgrades(versionGetterImpl VersionGetter, experimentalUpgradesAllowed, rcUpgradesAllowed bool, client clientset.Interface, printer output.Printer) ([]Upgrade, error) {

	if !ok {
		return cmdutil.TypeMismatchErr("allowExperimentalUpgrades", "bool")
	}

	availUpgrades, err := upgrade.GetAvailableUpgrades(versionGetter, *allowExperimentalUpgrades, *allowRCUpgrades, client, printer)
	if err != nil {
		return errors.Wrap(err, "[upgrade/versions] FATAL")
	}

	// Fetch the current state of the component configs

		t.Run(rt.name, func(t *testing.T) {

			dnsName := constants.CoreDNSDeploymentName

			client := newMockClientForTest(t, dnsName, rt.beforeDNSVersion, rt.deployDNSFailed)

			actualUpgrades, actualErr := GetAvailableUpgrades(rt.vg, rt.allowExperimental, rt.allowRCs, client, &output.TextPrinter{})
			if diff := cmp.Diff(rt.expectedUpgrades, actualUpgrades); len(diff) > 0 {