完成外键内容的单元测试。

test/table_info.conf

@@ -11,7 +11,7 @@
 #id	name	type
 #
 #For plugin table. The first column's id is 1. 0 as not speicified.
-#id	name	type	valid_column tag_column
+#id	name	type	column_define
 #
 #For expr/expr_plus Table
 #id	name	type	src_charset	dst_charset	do_merge cross_cache quick_mode
@@ -28,4 +28,4 @@
 9	SIM_URL	similar	--
 10	IMAGE_FP	expr	UTF8	UTF8	yes	128	quickoff
 11	TEST_EFFECTIVE_RANGE_TABLE	plugin	{"valid":4,"tag":5}	--
-12	TEST_EXETERN_LINK	plugin {"valid":4,"foreign":"6,7","tag":3}	--
+12	TEST_FOREIGN_KEY	plugin {"valid":4,"foreign":"6,8","tag":3}	--