Additional tests for connection (#10944)

* Added providerRegistered test

* test for EditConnectionDialog

* changed wording

* added test for connectionInfo

* utils.ts tests added

* hasRegisteredServers test

* commented out editconnection tests, addl. tests

* added onConnectionChangedNotification test

* added changeGroupId tests

* Added connection  profile changes

* added connectIfNotConnected test

* added delete connection test

* isRecent and disconnect editor tests

* added registerIconProvider test

* Fix for ensureDefaultLanguageFlavor test

* added a few tests

* utils prefix test updated

* added utils tests

src/sql/workbench/services/connection/browser/connectionManagementService.ts

@@ -769,7 +769,7 @@ export class ConnectionManagementService extends Disposable implements IConnecti
 	 * @param uri document identifier
 	 */
 	public ensureDefaultLanguageFlavor(uri: string): void {
-		if (!this.getProviderIdFromUri(uri)) {
+		if (this.getProviderIdFromUri(uri) === '') {
 			// Lookup the default settings and use this
 			let defaultProvider = this.getDefaultProviderId();
 			if (defaultProvider) {