Add FileGroup.

1 files changed, 113 insertions, 0 deletions

diff --git a/test/file_group_test.cc b/test/file_group_test.cc
new file mode 100644
index 000000000..025d6be02
--- /dev/null
+++ b/test/file_group_test.cc
@@ -0,0 +1,113 @@
+/*
+    Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+
+    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 2 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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <stdint.h>
+#include <cstdio>
+#include <boost/test/unit_test.hpp>
+#include <boost/filesystem.hpp>
+extern "C" {
+#include <libavformat/avio.h>
+}
+#include "lib/file_group.h"
+
+using std::vector;
+
+BOOST_AUTO_TEST_CASE (file_group_test)
+{
+	/* Random data; must be big enough for all the files */
+	uint8_t data[65536];
+	for (int i = 0; i < 65536; ++i) {
+		data[i] = rand() & 0xff;
+	}
+	
+	int const num_files = 4;
+
+	int length[] = {
+		99,
+		18941,
+		33110,
+		42
+	};
+
+	int total_length = 0;
+	for (int i = 0; i < num_files; ++i) {
+		total_length += length[i];
+	}
+
+	vector<boost::filesystem::path> name;
+	boost::filesystem::create_directories ("build/test/file_group_test");
+	name.push_back ("build/test/file_group_test/A");
+	name.push_back ("build/test/file_group_test/B");
+	name.push_back ("build/test/file_group_test/C");
+	name.push_back ("build/test/file_group_test/D");
+
+	int base = 0;
+	for (int i = 0; i < num_files; ++i) {
+		FILE* f = fopen (name[i].string().c_str(), "wb");
+		fwrite (data + base, 1, length[i], f);
+		fclose (f);
+		base += length[i];
+	}
+
+	FileGroup fg;
+	fg.set_paths (name);
+	uint8_t test[65536];
+
+	int pos = 0;
+
+	/* Basic read from 0 */
+	BOOST_CHECK_EQUAL (fg.read (test, 64), 64);
+	BOOST_CHECK_EQUAL (memcmp (data, test, 64), 0);
+	pos += 64;
+
+	/* Another read following the previous */
+	BOOST_CHECK_EQUAL (fg.read (test, 4), 4);
+	BOOST_CHECK_EQUAL (memcmp (data + pos, test, 4), 0);
+	pos += 4;
+
+	/* Read overlapping A and B */
+	BOOST_CHECK_EQUAL (fg.read (test, 128), 128);
+	BOOST_CHECK_EQUAL (memcmp (data + pos, test, 128), 0);
+	pos += 128;
+
+	/* Read overlapping B/C/D and over-reading */
+	BOOST_CHECK_EQUAL (fg.read (test, total_length * 3), total_length - pos);
+	BOOST_CHECK_EQUAL (memcmp (data + pos, test, total_length - pos), 0);
+
+	/* Bad seek */
+	BOOST_CHECK_EQUAL (fg.seek (total_length * 2, SEEK_SET), -1);
+
+	/* SEEK_SET */
+	BOOST_CHECK_EQUAL (fg.seek (999, SEEK_SET), 999);
+	BOOST_CHECK_EQUAL (fg.read (test, 64), 64);
+	BOOST_CHECK_EQUAL (memcmp (data + 999, test, 64), 0);
+
+	/* SEEK_CUR */
+	BOOST_CHECK_EQUAL (fg.seek (42, SEEK_CUR), 999 + 64 + 42);
+	BOOST_CHECK_EQUAL (fg.read (test, 64), 64);
+	BOOST_CHECK_EQUAL (memcmp (data + 999 + 64 + 42, test, 64), 0);
+
+	/* SEEK_END */
+	BOOST_CHECK_EQUAL (fg.seek (1077, SEEK_END), total_length - 1077);
+	BOOST_CHECK_EQUAL (fg.read (test, 256), 256);
+	BOOST_CHECK_EQUAL (memcmp (data + total_length - 1077, test, 256), 0);
+
+	/* AVSEEK_SIZE */
+	BOOST_CHECK_EQUAL (fg.seek (-1, AVSEEK_SIZE), total_length);
+}