add unit test for some filesystem functions, like listing directories

test/Jamfile

@@ -19,6 +19,7 @@ project
    ;
 
 test-suite libtorrent : 	
+	[ run test_file.cpp ]
 	[ run test_threads.cpp ]
 	[ run test_rss.cpp ]
 	[ run test_bandwidth_limiter.cpp ]

test/Makefile.am

@@ -1,4 +1,5 @@
 test_programs = \
+  test_file                  \
   test_auto_unchoke          \
   test_bandwidth_limiter     \
   test_bdecode_performance   \
@@ -41,6 +42,7 @@ noinst_HEADERS = test.hpp setup_transfer.hpp
 
 libtest_la_SOURCES = main.cpp setup_transfer.cpp
 
+test_file_SOURCES = test_file.cpp
 test_auto_unchoke_SOURCES = test_auto_unchoke.cpp
 test_bandwidth_limiter_SOURCES = test_bandwidth_limiter.cpp
 test_bdecode_performance_SOURCES = test_bdecode_performance.cpp

test/test_file.cpp

@@ -0,0 +1,94 @@
+/*
+
+Copyright (c) 2012, Arvid Norberg
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in
+      the documentation and/or other materials provided with the distribution.
+    * Neither the name of the author nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#include "libtorrent/file.hpp"
+#include "test.hpp"
+#include <vector>
+#include <set>
+
+using namespace libtorrent;
+
+int touch_file(std::string const& filename, int size)
+{
+	using namespace libtorrent;
+
+	std::vector<char> v;
+	v.resize(size);
+	for (int i = 0; i < size; ++i)
+		v[i] = i & 255;
+
+	file f;
+	error_code ec;
+	if (!f.open(filename, file::write_only, ec)) return -1;
+	if (ec) return -1;
+	file::iovec_t b = {&v[0], v.size()};
+	size_type written = f.writev(0, &b, 1, ec);
+	if (written != int(v.size())) return -3;
+	if (ec) return -3;
+	return 0;
+}
+
+int test_main()
+{
+	error_code ec;
+
+	create_directory("file_test_dir", ec);
+	if (ec) fprintf(stderr, "create_directory: %s\n", ec.message().c_str());
+	TEST_CHECK(!ec);
+
+	std::string cwd = current_working_directory();
+
+	touch_file(combine_path("file_test_dir", "abc"), 10);
+	touch_file(combine_path("file_test_dir", "def"), 100);
+	touch_file(combine_path("file_test_dir", "ghi"), 1000);
+
+	std::set<std::string> files;
+	for (directory i("file_test_dir", ec); !i.done(); i.next(ec))
+	{
+		std::string f = i.file();
+		TEST_CHECK(files.count(f) == 0);
+		files.insert(f);
+		fprintf(stderr, " %s\n", f.c_str());
+	}
+
+	TEST_CHECK(files.count("abc") == 1);
+	TEST_CHECK(files.count("def") == 1);
+	TEST_CHECK(files.count("ghi") == 1);
+	TEST_CHECK(files.count("..") == 1);
+	TEST_CHECK(files.count(".") == 1);
+
+	remove_all("file_test_dir", ec);
+	if (ec) fprintf(stderr, "create_directory: %s\n", ec.message().c_str());
+
+	return 0;
+}
+