=== modified file 'debian/control'
--- debian/control	2012-05-24 10:13:23 +0000
+++ debian/control	2012-10-31 11:32:36 +0000
@@ -30,6 +30,7 @@
 Conflicts: libpng2-dev, libpng-dev, libpng12-0-dev, libpng2 (<< 1.0.12-3)
 Provides: libpng-dev, libpng12-0-dev, libpng3-dev
 Replaces: libpng3-dev (<= 1.2.5), libpng12-0-dev
+XS-Testsuite: autopkgtest
 Description: PNG library - development
  libpng is a library implementing an interface for reading and writing
  PNG (Portable Network Graphics) format files.

=== added directory 'debian/tests'
=== added file 'debian/tests/build'
--- debian/tests/build	1970-01-01 00:00:00 +0000
+++ debian/tests/build	2012-10-31 11:36:28 +0000
@@ -0,0 +1,25 @@
+#!/bin/sh
+# autopkgtest check: Builds a small application against libpng, checking
+# if it compiles, links and runs successfully.
+# Author: Rafał Cieślak <rafalcieslak256@ubuntu.com> 
+
+set -e
+
+WORKDIR=$(mktemp -d)
+trap "rm -rf $WORKDIR" 0 INT QUIT ABRT PIPE TERM
+cd $WORKDIR
+cat <<EOF > build_test.c
+#include <png.h>
+int main(int argc, char** argv) {
+	png_structp png_ptr = NULL;
+	//Just creating a simple wrie struct.
+	png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+	if(!png_ptr) return 1;
+	return 0;
+}
+EOF
+gcc -o build_test build_test.c -lpng
+echo "build: OK"
+[ -x build_test ]
+./build_test
+echo "run: OK"

=== added file 'debian/tests/control'
--- debian/tests/control	1970-01-01 00:00:00 +0000
+++ debian/tests/control	2012-10-31 11:31:39 +0000
@@ -0,0 +1,2 @@
+Tests: build
+Depends: build-essential, libpng12-dev