add tests

Author: leibale

docs/client-configuration.md

@@ -30,6 +30,7 @@
 ## Reconnect Strategy
 
 TODO: `false | number | (retries: number, cause: unknown) => number | Error`
+https://github.com/redis/node-redis/pull/2250
 
 You can implement a custom reconnect strategy as a function:
 

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

@@ -16,6 +16,16 @@ describe('Cluster', () => {
         );
     }, GLOBAL.CLUSTERS.OPEN);
 
+    testUtils.testWithCluster('isOpen', async cluster => {
+        assert.equal(cluster.isOpen, true);
+        await cluster.disconnect();
+        assert.equal(cluster.isOpen, false);
+    }, GLOBAL.CLUSTERS.OPEN);
+
+    testUtils.testWithCluster('connect should throw if already connected', async cluster => {
+        assert.rejects(cluster.connect());
+    }, GLOBAL.CLUSTERS.OPEN);
+
     testUtils.testWithCluster('multi', async cluster => {
         const key = 'key';
         assert.deepEqual(