fix: parse database from Redis URL (#3052)

Author: PavelPashov

packages/client/lib/client/index.spec.ts

@@ -167,6 +167,14 @@ describe('Client', () => {
         }
       );
     });
+
+    it('DB in URL should be parsed', async () => {
+      const client = RedisClient.create({
+        url: 'redis://user:secret@localhost:6379/5'
+      });
+
+      assert.equal(client?.options?.database, 5);
+    })
   });
 
   describe('parseOptions', () => {

packages/client/lib/client/index.ts

@@ -496,8 +496,14 @@ export default class RedisClient<
       this._commandOptions = options.commandOptions;
     }
 
-    if (options) {
-      return RedisClient.parseOptions(options);
+    if (options?.url) {
+      const parsedOptions = RedisClient.parseOptions(options);
+    
+      if (parsedOptions?.database) {
+        this._self.#selectedDB = parsedOptions.database;
+      }
+
+      return parsedOptions;
     }
 
     return options;