Bugfix improve connection test (#174)

* Improve connection testing

for each connection:
- Perform simple test
- improve error message per connection

* Update sync.go

internal/sync.go

@@ -721,6 +721,7 @@ func DoSync(ctx context.Context, cfg *config.Config) error {
 
 	googleClient, err := google.NewClient(ctx, cfg.GoogleAdmin, creds)
 	if err != nil {
+	        log.WithField("error", err).Warn("Problem establising a connection to Google directory")
 		return err
 	}
 
@@ -731,6 +732,7 @@ func DoSync(ctx context.Context, cfg *config.Config) error {
 			Token:    cfg.SCIMAccessToken,
 		})
 	if err != nil {
+	        log.WithField("error", err).Warn("Problem establising a SCIM connection to AWS IAM Identity Center")
 		return err
 	}
 
@@ -741,12 +743,24 @@ func DoSync(ctx context.Context, cfg *config.Config) error {
 	})
 
 	if err != nil {
+	        log.WithField("error", err).Warn("Problem establising a session for Identity Store")
 		return err
 	}
 
 	// Initialize AWS Identity Store Public API Client with session
 	identityStoreClient := identitystore.New(sess)
 
+	response, err := identityStoreClient.ListGroups(
+                &identitystore.ListGroupsInput{IdentityStoreId: &cfg.IdentityStoreID})
+
+	if err != nil {
+	        log.WithField("error", err).Warn("Problem performing test query against Identity Store")
+		return err
+	} else {
+	        log.WithField("Groups", response).Info("Test call for groups successful")
+
+        }
+
 	// Initialize sync client with
 	// 1. SCIM API client
 	// 2. Google Directory API client