PT-1852 Added --no-check-foreing-keys to pt-osc

t/pt-online-schema-change/pt-1853.t

@@ -0,0 +1,80 @@
+#!/usr/bin/env perl
+
+BEGIN {
+    die "The PERCONA_TOOLKIT_BRANCH environment variable is not set.\n"
+    unless $ENV{PERCONA_TOOLKIT_BRANCH} && -d $ENV{PERCONA_TOOLKIT_BRANCH};
+    unshift @INC, "$ENV{PERCONA_TOOLKIT_BRANCH}/lib";
+};
+
+use strict;
+use warnings FATAL => 'all';
+use threads;
+use threads::shared;
+use Thread::Semaphore;
+
+use English qw(-no_match_vars);
+use Test::More;
+
+use Data::Dumper;
+use PerconaTest;
+use Sandbox;
+use SqlModes;
+use File::Temp qw/ tempdir /;
+
+require "$trunk/bin/pt-online-schema-change";
+
+plan tests => 3;
+
+my $dp = new DSNParser(opts=>$dsn_opts);
+my $sb = new Sandbox(basedir => '/tmp', DSNParser => $dp);
+my $master_dbh = $sb->get_dbh_for("master");
+my $master_dsn = $sb->dsn_for("master");
+
+# The sandbox servers run with lock_wait_timeout=3 and it's not dynamic
+# so we need to specify --set-vars innodb_lock_wait_timeout=3 else the
+# tool will die.
+my @args = (qw(--set-vars innodb_lock_wait_timeout=3));
+my $output;
+my $exit_status;
+
+$sb->load_file('master', "t/pt-online-schema-change/samples/pt-1853.sql");
+
+($output, $exit_status) = full_output(
+    sub { pt_online_schema_change::main(@args, "$master_dsn,D=test,t=jointit",
+            '--execute', 
+            '--alter', "engine=innodb",
+            '--alter-foreign-keys-method', 'rebuild_constraints'
+        ),
+    },
+    stderr => 1,
+);
+
+isnt(
+    $exit_status,
+    0,
+    "PT-1853, there are self referencing FKs -> exit status != 0",
+);
+
+($output, $exit_status) = full_output(
+    sub { pt_online_schema_change::main(@args, "$master_dsn,D=test,t=jointit",
+            '--execute', 
+            '--alter', "engine=innodb",
+            '--alter-foreign-keys-method', 'rebuild_constraints',
+            '--no-check-foreign-keys'
+        ),
+    },
+    stderr => 1,
+);
+
+isnt(
+    $exit_status,
+    0,
+    "PT-1853, there are self referencing FKs but --no-check-foreign-keys was specifid -> exit status = 0",
+);
+
+# #############################################################################
+# Done.
+# #############################################################################
+$sb->wipe_clean($master_dbh);
+ok($sb->ok(), "Sandbox servers") or BAIL_OUT(__FILE__ . " broke the sandbox");
+done_testing;