Started writing basic regression tests

.gitignore

@@ -1,5 +1,9 @@
 *.swp
 *.o
 *.so
-tools/get_sizeof_phone_number
+/tools/get_sizeof_phone_number
 /pg_libphonenumber--*.sql
+regression.diffs
+regression.out
+/results/
+

Makefile

@@ -5,10 +5,13 @@ EXTENSION := pg_libphonenumber
 version := 1.0
 extension_script := $(EXTENSION)--$(version).sql
 DATA_built := $(extension_script)
+REGRESS := regression
 
+#Build options
 cpp_files := $(wildcard *.cpp)
 
 MODULE_big := pg_libphonenumber
+
 OBJS := $(patsubst %.cpp,%.o,$(cpp_files))
 PG_CPPFLAGS := -fPIC -std=c++11
 ifeq ($(CONFIG),debug)
@@ -18,12 +21,15 @@ else
 endif
 SHLIB_LINK := -lphonenumber -lstdc++
 
+#Clean options
 EXTRA_CLEAN := $(extension_script) tools/get_sizeof_phone_number
 
+#Load PGXS.
 PG_CONFIG := pg_config
 PGXS := $(shell $(PG_CONFIG) --pgxs)
 include $(PGXS)
 
+#How to build the extension script:
 $(extension_script): $(EXTENSION).sql.template tools/get_sizeof_phone_number
 	sed "s/SIZEOF_PHONE_NUMBER/$(shell tools/get_sizeof_phone_number)/" $< > $@
 

sql/regression.sql

@@ -0,0 +1,8 @@
+CREATE EXTENSION IF NOT EXISTS pg_libphonenumber;
+
+--Test phone number parsing
+select parse_phone_number('555-555-5555', 'US');
+--These two should produce errors because the number is too long.
+select parse_phone_number('555-555-5555555555', 'US');
+select parse_phone_number('555-555-55555555555', 'US');
+