t.Errorf("Expecting region `us-east-1` found %s", globalSite.Region)
	}

	// Set new region and verify.
	config.SetRegion(globalServerConfig, "us-west-1")
	site, err := config.LookupSite(
		globalServerConfig[config.SiteSubSys][config.Default],
		globalServerConfig[config.RegionSubSys][config.Default],
	)
	if err != nil {
		t.Fatal(err)
	}
	if site.Region != "us-west-1" {

	bootstrapTraceMsg("lookup the configuration")

	// Override any values from ENVs.
	lookupConfigs(srvCfg, objAPI)

	// hold the mutex lock before a new config is assigned.
	globalServerConfigMu.Lock()
	globalServerConfig = srvCfg
	globalServerConfigMu.Unlock()

	return nil

		// Test case - 4
		// In case of invalid XML request body ErrMalformedXML is returned.
		{malformedReq, globalMinioDefaultRegion, ErrMalformedXML},
	}

	for i, testCase := range testCases {
		config.SetRegion(globalServerConfig, testCase.serverConfigRegion)
		_, actualCode := parseLocationConstraint(testCase.request)
		if testCase.expectedCode != actualCode {