heal: Print heal command appropriately without export path. (#3208)

Fixes #3204

cmd/prepare-storage-msg_test.go

@@ -18,9 +18,59 @@ package cmd
 
 import (
 	"net/url"
+	"reflect"
 	"testing"
 )
 
+// Tests and validates the output for heal endpoint.
+func TestGetHealEndpoint(t *testing.T) {
+	// Test for a SSL scheme.
+	tls := true
+	hURL := getHealEndpoint(tls, &url.URL{
+		Scheme: "http",
+		Host:   "localhost:9000",
+	})
+	sHURL := &url.URL{
+		Scheme: "https",
+		Host:   "localhost:9000",
+	}
+	if !reflect.DeepEqual(hURL, sHURL) {
+		t.Fatalf("Expected %#v, but got %#v", sHURL, hURL)
+	}
+
+	// Test a non-TLS scheme.
+	tls = false
+	hURL = getHealEndpoint(tls, &url.URL{
+		Scheme: "https",
+		Host:   "localhost:9000",
+	})
+	sHURL = &url.URL{
+		Scheme: "http",
+		Host:   "localhost:9000",
+	}
+	if !reflect.DeepEqual(hURL, sHURL) {
+		t.Fatalf("Expected %#v, but got %#v", sHURL, hURL)
+	}
+
+	// FIXME(GLOBAL): purposefully Host is left empty because
+	// we need to bring in safe handling on global values
+	// add a proper test case here once that happens.
+	/*
+		tls = false
+		hURL = getHealEndpoint(tls, &url.URL{
+			Path: "/export",
+		})
+		sHURL = &url.URL{
+			Scheme: "http",
+			Host:   "",
+		}
+		globalMinioAddr = ""
+		if !reflect.DeepEqual(hURL, sHURL) {
+			t.Fatalf("Expected %#v, but got %#v", sHURL, hURL)
+		}
+	*/
+}
+
 // Tests heal message to be correct and properly formatted.
 func TestHealMsg(t *testing.T) {
 	rootPath, err := newTestConfig("us-east-1")
@@ -69,7 +119,7 @@ func TestHealMsg(t *testing.T) {
 		},
 	}
 	for i, testCase := range testCases {
-		msg := getHealMsg(testCase.endPoints[0].String(), testCase.storageDisks)
+		msg := getHealMsg(testCase.endPoints, testCase.storageDisks)
 		if msg == "" {
 			t.Fatalf("Test: %d Unable to get heal message.", i+1)
 		}