1 files changed, 104 insertions, 0 deletions
diff --git a/tests/sentinel/tests/07-down-conditions.tcl b/tests/sentinel/tests/07-down-conditions.tcl
new file mode 100644
index 0000000..dabbc14
--- /dev/null
+++ b/tests/sentinel/tests/07-down-conditions.tcl
@@ -0,0 +1,104 @@
+# Test conditions where an instance is considered to be down
+
+source "../tests/includes/init-tests.tcl"
+source "../../../tests/support/cli.tcl"
+
+foreach_sentinel_id id {
+    S $id sentinel debug info-period 1000
+    S $id sentinel debug ask-period 100
+    S $id sentinel debug default-down-after 3000
+    S $id sentinel debug publish-period 200
+    S $id sentinel debug ping-period 100
+}
+
+set ::alive_sentinel [expr {$::instances_count/2+2}]
+proc ensure_master_up {} {
+    S $::alive_sentinel sentinel debug info-period 1000
+    S $::alive_sentinel sentinel debug ping-period 100
+    S $::alive_sentinel sentinel debug ask-period 100
+    S $::alive_sentinel sentinel debug publish-period 100
+    wait_for_condition 1000 50 {
+        [dict get [S $::alive_sentinel sentinel master mymaster] flags] eq "master"
+    } else {
+        fail "Master flags are not just 'master'"
+    }
+}
+
+proc ensure_master_down {} {
+    S $::alive_sentinel sentinel debug info-period 1000
+    S $::alive_sentinel sentinel debug ping-period 100
+    S $::alive_sentinel sentinel debug ask-period 100
+    S $::alive_sentinel sentinel debug publish-period 100
+    wait_for_condition 1000 50 {
+        [string match *down* \
+            [dict get [S $::alive_sentinel sentinel master mymaster] flags]]
+    } else {
+        fail "Master is not flagged SDOWN"
+    }
+}
+
+test "Crash the majority of Sentinels to prevent failovers for this unit" {
+    for {set id 0} {$id < $quorum} {incr id} {
+        kill_instance sentinel $id
+    }
+}
+
+test "SDOWN is triggered by non-responding but not crashed instance" {
+    ensure_master_up
+    set master_addr [S $::alive_sentinel SENTINEL GET-MASTER-ADDR-BY-NAME mymaster]
+    set master_id [get_instance_id_by_port redis [lindex $master_addr 1]]
+
+    set pid [get_instance_attrib redis $master_id pid]
+    pause_process $pid
+    ensure_master_down
+    resume_process $pid
+    ensure_master_up
+}
+
+test "SDOWN is triggered by crashed instance" {
+    lassign [S $::alive_sentinel SENTINEL GET-MASTER-ADDR-BY-NAME mymaster] host port
+    ensure_master_up
+    kill_instance redis 0
+    ensure_master_down
+    restart_instance redis 0
+    ensure_master_up
+}
+
+test "SDOWN is triggered by masters advertising as slaves" {
+    ensure_master_up
+    R 0 slaveof 127.0.0.1 34567
+    ensure_master_down
+    R 0 slaveof no one
+    ensure_master_up
+}
+
+if {!$::log_req_res} { # this test changes 'dir' config to '/' and logreqres.c cannot open protocol dump file under the root directory.
+test "SDOWN is triggered by misconfigured instance replying with errors" {
+    ensure_master_up
+    set orig_dir [lindex [R 0 config get dir] 1]
+    set orig_save [lindex [R 0 config get save] 1]
+    # Set dir to / and filename to "tmp" to make sure it will fail.
+    R 0 config set dir /
+    R 0 config set dbfilename tmp
+    R 0 config set save "1000000 1000000"
+    after 5000
+    R 0 bgsave
+    after 5000
+    ensure_master_down
+    R 0 config set save $orig_save
+    R 0 config set dir $orig_dir
+    R 0 config set dbfilename dump.rdb
+    R 0 bgsave
+    ensure_master_up
+}
+}
+
+# We use this test setup to also test command renaming, as a side
+# effect of the master going down if we send PONG instead of PING
+test "SDOWN is triggered if we rename PING to PONG" {
+    ensure_master_up
+    S $::alive_sentinel SENTINEL SET mymaster rename-command PING PONG
+    ensure_master_down
+    S $::alive_sentinel SENTINEL SET mymaster rename-command PING PING
+    ensure_master_up
+}