added a test for sparse files

3 files changed, 73 insertions, 2 deletions

diff --git a/TODO b/TODO
index 4343470..4339b7b 100644
--- a/TODO
+++ b/TODO
@@ -9,7 +9,6 @@ TODO list (in order of priority)
 - fill in st_nlink correctly
 - handle some wird cases with symlink renames, also test them
 - sort out synchronization issues, how much should we lock?
-- add tests for sparse files and funny read/write operations
 - strategy for half-blocks, help PostgreSQL optimize disk usage
   of data in BYTEA columns. Try to support tails of growing files
   and tiny files (without padding to the block size)
diff --git a/tests/Makefile b/tests/Makefile
index 69b061d..8b156e6 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -4,7 +4,7 @@ PG_CONNINFO = ""
 
 CFLAGS += -I..
 
-test: testfsync testpgsql testtypes
+test: testfsync testpgsql testtypes testbigfile
 	psql < clean.sql
 	psql < ../schema.sql
 	test -d mnt || mkdir mnt
@@ -56,6 +56,9 @@ test: testfsync testpgsql testtypes
 	-dd if=/dev/zero of=mnt/trunc bs=512 count=10
 	-truncate --size 513 mnt/trunc
 	-ls -al mnt/trunc
+	# expect success, write a sparse big file
+	-./testbigfile
+	-ls -al mnt/testbigfile.data
 	# END: unmount FUSE file system
 	fusermount -u mnt
 
@@ -63,6 +66,7 @@ clean:
 	rm -f testfsync testfsync.o
 	rm -f testpgsql testpgsql.o
 	rm -f testtypes testtypes.o
+	rm -f testbigfile testbigfile.o
 	
 testfsync: testfsync.o
 	$(CC) -o testfsync testfsync.o
@@ -81,3 +85,9 @@ testtypes: testtypes.o
 
 testtypes.o: testtypes.c
 	$(CC) -c $(CFLAGS) -o testtypes.o testtypes.c
+
+testbigfile: testbigfile.o
+	$(CC) -o testbigfile testbigfile.o
+
+testbigfile.o: testbigfile.c
+	$(CC) -c $(CFLAGS) -o testbigfile.o testbigfile.c
diff --git a/tests/testbigfile.c b/tests/testbigfile.c
new file mode 100644
index 0000000..f17ff18
--- /dev/null
+++ b/tests/testbigfile.c
@@ -0,0 +1,62 @@
+/*
+    Copyright (C) 2012 Andreas Baumann <abaumann@yahoo.com>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int main( void )
+{
+	char buf[4096];
+	int fd;
+	ssize_t res;
+	
+	memset( buf, 1, 4096 );
+	
+	fd = open( "./mnt/testbigfile.data", O_WRONLY | O_CREAT,
+	    S_IRUSR | S_IWUSR );
+	if( fd < 0 ) {
+		perror( "Unable to open testfile" );
+		return 1;
+	}
+	
+	res = write( fd, buf, 4096 );
+	if( res != 4096 ) {
+		perror( "Error writing" );
+		(void)close( fd );
+		return 1;
+	}
+
+	res = lseek( fd, 409600 /* 4294967296 */, SEEK_SET );
+	if( res < 0 ) {
+		perror( "Unable to seek in testfile" );
+		return 1;
+	}
+	
+	res = write( fd, buf, 4096 );
+	if( res != 4096 ) {
+		perror( "Error writing" );
+		(void)close( fd );
+		return 1;
+	}
+		
+	(void)close( fd );
+	
+	return 0;
+}