Sentinel test files / directories layout improved.

The test now runs in a self-contained directory.
The general abstractions to run the tests in an environment where
mutliple instances are executed at the same time was extrapolated into
instances.tcl, that will be reused to test Redis Cluster.

runtest-sentinel

@@ -11,4 +11,4 @@ then
     echo "You need tcl 8.5 or newer in order to run the Redis Sentinel test"
     exit 1
 fi
-$TCLSH tests/sentinel.tcl $*
+$TCLSH tests/sentinel/run.tcl $*

tests/instances.tcl

@@ -1,14 +1,19 @@
-# Sentinel test suite. Copyright (C) 2014 Salvatore Sanfilippo antirez@gmail.com
+# Multi-instance test framework.
+# This is used in order to test Sentinel and Redis Cluster, and provides
+# basic capabilities for spawning and handling N parallel Redis / Sentinel
+# instances.
+#
+# Copyright (C) 2014 Salvatore Sanfilippo antirez@gmail.com
 # This softare is released under the BSD License. See the COPYING file for
 # more information.
 
 package require Tcl 8.5
 
 set tcl_precision 17
-source tests/support/redis.tcl
+source ../support/redis.tcl
-source tests/support/util.tcl
+source ../support/util.tcl
-source tests/support/server.tcl
+source ../support/server.tcl
-source tests/support/test.tcl
+source ../support/test.tcl
 
 set ::verbose 0
 set ::pause_on_error 0
@@ -22,8 +27,8 @@ set ::pids {} ; # We kill everything at exit
 set ::dirs {} ; # We remove all the temp dirs at exit
 set ::run_matching {} ; # If non empty, only tests matching pattern are run.
 
-if {[catch {cd tests/sentinel-tmp}]} {
+if {[catch {cd tmp}]} {
-    puts "tests/sentinel-tmp directory not found."
+    puts "tmp directory not found."
     puts "Please run this test from the Redis source root."
     exit 1
 }
@@ -61,7 +66,7 @@ proc spawn_instance {type base_port count {conf {}}} {
         } else {
             error "Unknown instance type."
         }
-        set pid [exec ../../src/${prgname} $cfgfile &]
+        set pid [exec ../../../src/${prgname} $cfgfile &]
         lappend ::pids $pid
 
         # Check availability
@@ -122,14 +127,6 @@ proc parse_options {} {
     }
 }
 
-proc main {} {
-    parse_options
-    spawn_instance sentinel $::sentinel_base_port $::instances_count
-    spawn_instance redis $::redis_base_port $::instances_count
-    run_tests
-    cleanup
-}
-
 # If --pause-on-error option was passed at startup this function is called
 # on error in order to give the developer a chance to understand more about
 # the error condition while the instances are still running.
@@ -224,7 +221,7 @@ proc test {descr code} {
 }
 
 proc run_tests {} {
-    set tests [lsort [glob ../sentinel-tests/*]]
+    set tests [lsort [glob ../tests/*]]
     foreach test $tests {
         if {$::run_matching ne {} && [string match $::run_matching $test] == 0} {
             continue
@@ -383,7 +380,7 @@ proc restart_instance {type id} {
     } else {
         set prgname redis-sentinel
     }
-    set pid [exec ../../src/${prgname} $cfgfile &]
+    set pid [exec ../../../src/${prgname} $cfgfile &]
     set_instance_attrib $type $id pid $pid
     lappend ::pids $pid
 
@@ -396,7 +393,3 @@ proc restart_instance {type id} {
     set_instance_attrib $type $id link [redis 127.0.0.1 $port]
 }
 
-if {[catch main e]} {
-    puts $::errorInfo
-    cleanup
-}

tests/sentinel/run.tcl

@@ -0,0 +1,19 @@
+# Sentinel test suite. Copyright (C) 2014 Salvatore Sanfilippo antirez@gmail.com
+# This softare is released under the BSD License. See the COPYING file for
+# more information.
+
+cd tests/sentinel
+source ../instances.tcl
+
+proc main {} {
+    parse_options
+    spawn_instance sentinel $::sentinel_base_port $::instances_count
+    spawn_instance redis $::redis_base_port $::instances_count
+    run_tests
+    cleanup
+}
+
+if {[catch main e]} {
+    puts $::errorInfo
+    cleanup
+}

tests/sentinel/tests/00-base.tcl

@@ -1,6 +1,6 @@
 # Check the basic monitoring and failover capabilities.
 
-source "../sentinel-tests/includes/init-tests.tcl"
+source "../tests/includes/init-tests.tcl"
 
 if {$::simulate_error} {
     test "This test will fail" {

tests/sentinel/tests/01-conf-update.tcl

@@ -1,6 +1,6 @@
 # Test Sentinel configuration consistency after partitions heal.
 
-source "../sentinel-tests/includes/init-tests.tcl"
+source "../tests/includes/init-tests.tcl"
 
 test "We can failover with Sentinel 1 crashed" {
     set old_port [RI $master_id tcp_port]

tests/sentinel/tests/02-slaves-reconf.tcl

@@ -5,7 +5,7 @@
 # 2) That partitioned slaves point to new master when they are partitioned
 #    away during failover and return at a latter time.
 
-source "../sentinel-tests/includes/init-tests.tcl"
+source "../tests/includes/init-tests.tcl"
 
 proc 03_test_slaves_replication {} {
     uplevel 1 {