adding tests

localtests/fail-float-unique-key/create.sql

@@ -0,0 +1,11 @@
+drop table if exists gh_ost_test;
+create table gh_ost_test (
+  f float,
+  i int not null,
+  ts timestamp default current_timestamp,
+  dt datetime,
+  key i_idx(i),
+  unique key f_uidx(f)
+) auto_increment=1;
+
+drop event if exists gh_ost_test;

localtests/fail-float-unique-key/expect_failure

@@ -0,0 +1 @@
+No shared unique key can be found

localtests/fail-float-unique-key/extra_args

@@ -0,0 +1 @@
+--alter="add column v varchar(32)"