Fix: PromisePoolCluster.of returns PromisePoolCluster instead of PoolNamespace (#3091)

Author: jcmartineztiempo

test/esm/integration/pool-cluster/test-promise-wrapper.test.mjs

@@ -80,42 +80,6 @@ const { createPoolCluster } = require('../../../../promise.js');
     poolCluster.poolCluster.emit('online');
   });
 
-  await test(async () => {
-    const poolCluster = createPoolCluster();
-
-    poolCluster.once('offline', async function () {
-      await new Promise((resolve) => {
-        assert.equal(
-          // eslint-disable-next-line no-invalid-this
-          this,
-          poolCluster,
-          'should propagate offline event to promise wrapper',
-        );
-        resolve(true);
-      });
-    });
-
-    poolCluster.poolCluster.emit('offline');
-  });
-
-  await test(async () => {
-    const poolCluster = createPoolCluster();
-
-    poolCluster.once('online', async function () {
-      await new Promise((resolve) => {
-        assert.equal(
-          // eslint-disable-next-line no-invalid-this
-          this,
-          poolCluster,
-          'should propagate online event to promise wrapper',
-        );
-        resolve(true);
-      });
-    });
-
-    poolCluster.poolCluster.emit('online');
-  });
-
   await test(async () => {
     const poolCluster = createPoolCluster();
     poolCluster.add('MASTER', common.config);
@@ -127,10 +91,16 @@ const { createPoolCluster } = require('../../../../promise.js');
     assert.ok(connection, 'should get connection');
     connection.release();
 
-    const result = await poolNamespace.query('SELECT 1 as a from dual where 1 = ?', [1]);
+    const result = await poolNamespace.query(
+      'SELECT 1 as a from dual where 1 = ?',
+      [1],
+    );
     assert.equal(result[0]['a'], 1, 'should query successfully');
 
-    const result2 = await poolNamespace.execute('SELECT 1 as a from dual where 1 = ?', [1]);
+    const result2 = await poolNamespace.execute(
+      'SELECT 1 as a from dual where 1 = ?',
+      [1],
+    );
     assert.equal(result2[0]['a'], 1, 'should execute successfully');
   });
 })();