fuzzystrmatch: Add test suite

Reviewed-by: David Steele <david@pgmasters.net>

contrib/fuzzystrmatch/.gitignore

@@ -0,0 +1,4 @@
+# Generated subdirectories
+/log/
+/results/
+/tmp_check/

contrib/fuzzystrmatch/Makefile

@@ -8,6 +8,8 @@ DATA = fuzzystrmatch--1.1.sql fuzzystrmatch--1.0--1.1.sql \
 	fuzzystrmatch--unpackaged--1.0.sql
 PGFILEDESC = "fuzzystrmatch - similarities and distance between strings"
 
+REGRESS = fuzzystrmatch
+
 ifdef USE_PGXS
 PG_CONFIG = pg_config
 PGXS := $(shell $(PG_CONFIG) --pgxs)

contrib/fuzzystrmatch/expected/fuzzystrmatch.out

@@ -0,0 +1,67 @@
+CREATE EXTENSION fuzzystrmatch;
+SELECT soundex('hello world!');
+ soundex 
+---------
+ H464
+(1 row)
+
+SELECT soundex('Anne'), soundex('Ann'), difference('Anne', 'Ann');
+ soundex | soundex | difference 
+---------+---------+------------
+ A500    | A500    |          4
+(1 row)
+
+SELECT soundex('Anne'), soundex('Andrew'), difference('Anne', 'Andrew');
+ soundex | soundex | difference 
+---------+---------+------------
+ A500    | A536    |          2
+(1 row)
+
+SELECT soundex('Anne'), soundex('Margaret'), difference('Anne', 'Margaret');
+ soundex | soundex | difference 
+---------+---------+------------
+ A500    | M626    |          0
+(1 row)
+
+SELECT levenshtein('GUMBO', 'GAMBOL');
+ levenshtein 
+-------------
+           2
+(1 row)
+
+SELECT levenshtein('GUMBO', 'GAMBOL', 2, 1, 1);
+ levenshtein 
+-------------
+           3
+(1 row)
+
+SELECT levenshtein_less_equal('extensive', 'exhaustive', 2);
+ levenshtein_less_equal 
+------------------------
+                      3
+(1 row)
+
+SELECT levenshtein_less_equal('extensive', 'exhaustive', 4);
+ levenshtein_less_equal 
+------------------------
+                      4
+(1 row)
+
+SELECT metaphone('GUMBO', 4);
+ metaphone 
+-----------
+ KM
+(1 row)
+
+SELECT dmetaphone('gumbo');
+ dmetaphone 
+------------
+ KMP
+(1 row)
+
+SELECT dmetaphone_alt('gumbo');
+ dmetaphone_alt 
+----------------
+ KMP
+(1 row)
+

contrib/fuzzystrmatch/sql/fuzzystrmatch.sql

@@ -0,0 +1,21 @@
+CREATE EXTENSION fuzzystrmatch;
+
+
+SELECT soundex('hello world!');
+
+SELECT soundex('Anne'), soundex('Ann'), difference('Anne', 'Ann');
+SELECT soundex('Anne'), soundex('Andrew'), difference('Anne', 'Andrew');
+SELECT soundex('Anne'), soundex('Margaret'), difference('Anne', 'Margaret');
+
+
+SELECT levenshtein('GUMBO', 'GAMBOL');
+SELECT levenshtein('GUMBO', 'GAMBOL', 2, 1, 1);
+SELECT levenshtein_less_equal('extensive', 'exhaustive', 2);
+SELECT levenshtein_less_equal('extensive', 'exhaustive', 4);
+
+
+SELECT metaphone('GUMBO', 4);
+
+
+SELECT dmetaphone('gumbo');
+SELECT dmetaphone_alt('gumbo');

doc/src/sgml/fuzzystrmatch.sgml

@@ -227,7 +227,7 @@ dmetaphone_alt(text source) returns text
   </para>
 
 <screen>
-test=# select dmetaphone('gumbo');
+test=# SELECT dmetaphone('gumbo');
  dmetaphone
 ------------
  KMP