Test error diffs.

t/pt-upgrade/samples/005/error_on_both_hosts.log

@@ -0,0 +1,4 @@
+# User@Host: root[root] @ localhost []
+# Query_time: 1  Lock_time: 0  Rows_sent: 7  Rows_examined: 7
+use test;
+select nonexistent_col from test.t;

t/pt-upgrade/samples/005/error_on_both_hosts.txt

@@ -0,0 +1,34 @@
+########################################################################
+# Query class 0F88A9418F511C18
+########################################################################
+
+Reporting class because it has SQL errors, but hasn't been reported yet.
+
+Total queries      1
+Unique queries     1
+Discarded queries  0
+
+select nonexistent_col from test.t
+
+##
+## SQL errors: 1
+##
+
+-- 1.
+
+On both hosts:
+
+DBD::mysql::st execute failed: Unknown column 'nonexistent_col' in 'field list' [for Statement "select nonexistent_col from test.t"] at /Users/daniel/p/pt-upgrade-2.2/bin/pt-upgrade line 5327, <> line 1.
+
+select nonexistent_col from test.t
+
+########################################################################
+# Stats
+########################################################################
+
+failed_queries        1
+queries_filtered      0
+queries_no_diffs      0
+queries_read          1
+queries_with_diffs    0
+queries_with_errors   0

t/pt-upgrade/samples/005/error_on_host1.log

@@ -0,0 +1,4 @@
+# User@Host: root[root] @ localhost []
+# Query_time: 1  Lock_time: 0  Rows_sent: 7  Rows_examined: 7
+use test;
+select host2_col from test.t;

t/pt-upgrade/samples/005/error_on_host1.txt

@@ -0,0 +1,36 @@
+########################################################################
+# Query class 883A4BC43021922E
+########################################################################
+
+Reporting class because it has diffs, but hasn't been reported yet.
+
+Total queries      1
+Unique queries     1
+Discarded queries  0
+
+select host?_col from test.t
+
+##
+## Query errors diffs: 1
+##
+
+-- 1.
+
+DBD::mysql::st execute failed: Unknown column 'host2_col' in 'field list' [for Statement "select host2_col from test.t"] at /Users/daniel/p/pt-upgrade-2.2/bin/pt-upgrade line 5327, <> line 1.
+
+vs.
+
+No error
+
+select host2_col from test.t
+
+########################################################################
+# Stats
+########################################################################
+
+failed_queries        0
+queries_filtered      0
+queries_no_diffs      0
+queries_read          1
+queries_with_diffs    0
+queries_with_errors   1

t/pt-upgrade/samples/005/error_on_host2.log

@@ -0,0 +1,4 @@
+# User@Host: root[root] @ localhost []
+# Query_time: 1  Lock_time: 0  Rows_sent: 7  Rows_examined: 7
+use test;
+select host1_col from test.t;

t/pt-upgrade/samples/005/error_on_host2.txt

@@ -0,0 +1,36 @@
+########################################################################
+# Query class 883A4BC43021922E
+########################################################################
+
+Reporting class because it has diffs, but hasn't been reported yet.
+
+Total queries      1
+Unique queries     1
+Discarded queries  0
+
+select host?_col from test.t
+
+##
+## Query errors diffs: 1
+##
+
+-- 1.
+
+No error
+
+vs.
+
+DBD::mysql::st execute failed: Unknown column 'host1_col' in 'field list' [for Statement "select host1_col from test.t"] at /Users/daniel/p/pt-upgrade-2.2/bin/pt-upgrade line 5327, <> line 1.
+
+select host1_col from test.t
+
+########################################################################
+# Stats
+########################################################################
+
+failed_queries        0
+queries_filtered      0
+queries_no_diffs      0
+queries_read          1
+queries_with_diffs    0
+queries_with_errors   1

t/pt-upgrade/samples/005/host1.sql

@@ -0,0 +1,5 @@
+USE test;
+CREATE TABLE t (
+  host1_col  INT
+);
+INSERT INTO t VALUES (1);

t/pt-upgrade/samples/005/host2.sql

@@ -0,0 +1,5 @@
+USE test;
+CREATE TABLE t (
+  host2_col  INT
+);
+INSERT INTO t VALUES (1);

t/pt-upgrade/samples/005/tables.sql

@@ -0,0 +1,2 @@
+DROP DATABASE IF EXISTS test;
+CREATE DATABASE test;