Cluster test: auto-discovery to form full mesh.

Author: antirez

tests/cluster/tests/00-base.tcl

@@ -28,3 +28,25 @@ test "Different nodes have different IDs" {
     set numids [llength [lsort -unique $ids]]
     assert {$numids == $numnodes}
 }
+
+test "Check if nodes auto-discovery works" {
+    # Join node 0 with 1, 1 with 2, ... and so forth.
+    # If auto-discovery works all nodes will know every other node
+    # eventually.
+    set ids {}
+    foreach_redis_id id {lappend ids $id}
+    for {set j 0} {$j < [expr [llength $ids]-1]} {incr j} {
+        set a [lindex $ids $j]
+        set b [lindex $ids [expr $j+1]]
+        set b_port [get_instance_attrib redis $b port]
+        R $a cluster meet 127.0.0.1 $b_port
+    }
+
+    foreach_redis_id id {
+        wait_for_condition 1000 50 {
+            [llength [get_cluster_nodes $id]] == [llength $ids]
+        } else {
+            fail "Cluster failed to join into a full mesh."
+        }
+    }
+}