add unit test and nil pointer check to create command

Author: GokceGK

internal/cmd/beta/logs/instance/create/create.go

@@ -156,9 +156,17 @@ func outputResult(p *print.Printer, model *inputModel, projectLabel string, resp
 	if resp == nil {
 		return fmt.Errorf("create logs instance response is empty")
 	}
-	return p.OutputResult(model.OutputFormat, resp, func() error {
+	var outputFormat string
+	var async bool
+
+	if model.GlobalFlagModel != nil {
+		outputFormat = model.OutputFormat
+		async = model.Async
+	}
+
+	return p.OutputResult(outputFormat, resp, func() error {
 		operationState := "Created"
-		if model.Async {
+		if async {
 			operationState = "Triggered creation of"
 		}
 		p.Outputf("%s instance for project %q. Instance ID: %s\n", operationState, projectLabel, utils.PtrString(resp.Id))

internal/cmd/beta/logs/instance/create/create_test.go

@@ -211,6 +211,12 @@ func TestOutputResult(t *testing.T) {
 			instance:    nil,
 			wantErr:     true,
 		},
+		{
+			description: "global flag nil",
+			instance:    &logs.LogsInstance{},
+			model:       &inputModel{GlobalFlagModel: nil},
+			wantErr:     false,
+		},
 		{
 			description: "default output",
 			instance:    &logs.LogsInstance{},