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# Check the basic monitoring and failover capabilities.
source "../tests/includes/init-tests.tcl"
if {$::simulate_error} {
test "This test will fail" {
fail "Simulated error"
}
}
test "Cluster nodes are reachable" {
foreach_redis_id id {
# Every node should just know itself.
assert {[R $id ping] eq {PONG}}
}
}
test "Different nodes have different IDs" {
set ids {}
set numnodes 0
foreach_redis_id id {
incr numnodes
# Every node should just know itself.
set nodeid [dict get [get_myself $id] id]
assert {$nodeid ne {}}
lappend ids $nodeid
}
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."
}
}
}
test "After the join, every node gets a different config epoch" {
set trynum 60
while {[incr trynum -1] != 0} {
# We check that this condition is true for *all* the nodes.
set ok 1 ; # Will be set to 0 every time a node is not ok.
foreach_redis_id id {
set epochs {}
foreach n [get_cluster_nodes $id] {
lappend epochs [dict get $n config_epoch]
}
if {[lsort $epochs] != [lsort -unique $epochs]} {
set ok 0 ; # At least one collision!
}
}
if {$ok} break
after 1000
puts -nonewline .
flush stdout
}
if {$trynum == 0} {
fail "Config epoch conflict resolution is not working."
}
}
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