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-rw-r--r--utils/process/systembuf_test.cpp166
1 files changed, 166 insertions, 0 deletions
diff --git a/utils/process/systembuf_test.cpp b/utils/process/systembuf_test.cpp
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+// Copyright 2010 The Kyua Authors.
+// 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 Google Inc. 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 "utils/process/systembuf.hpp"
+
+extern "C" {
+#include <sys/stat.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+}
+
+#include <fstream>
+
+#include <atf-c++.hpp>
+
+using utils::process::systembuf;
+
+
+static void
+check_data(std::istream& is, std::size_t length)
+{
+ char ch = 'A', chr;
+ std::size_t cnt = 0;
+ while (is >> chr) {
+ ATF_REQUIRE_EQ(ch, chr);
+ if (ch == 'Z')
+ ch = 'A';
+ else
+ ch++;
+ cnt++;
+ }
+ ATF_REQUIRE_EQ(cnt, length);
+}
+
+
+static void
+write_data(std::ostream& os, std::size_t length)
+{
+ char ch = 'A';
+ for (std::size_t i = 0; i < length; i++) {
+ os << ch;
+ if (ch == 'Z')
+ ch = 'A';
+ else
+ ch++;
+ }
+ os.flush();
+}
+
+
+static void
+test_read(std::size_t length, std::size_t bufsize)
+{
+ std::ofstream f("test_read.txt");
+ write_data(f, length);
+ f.close();
+
+ int fd = ::open("test_read.txt", O_RDONLY);
+ ATF_REQUIRE(fd != -1);
+ systembuf sb(fd, bufsize);
+ std::istream is(&sb);
+ check_data(is, length);
+ ::close(fd);
+ ::unlink("test_read.txt");
+}
+
+
+static void
+test_write(std::size_t length, std::size_t bufsize)
+{
+ int fd = ::open("test_write.txt", O_WRONLY | O_CREAT | O_TRUNC,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+ ATF_REQUIRE(fd != -1);
+ systembuf sb(fd, bufsize);
+ std::ostream os(&sb);
+ write_data(os, length);
+ ::close(fd);
+
+ std::ifstream is("test_write.txt");
+ check_data(is, length);
+ is.close();
+ ::unlink("test_write.txt");
+}
+
+
+ATF_TEST_CASE(short_read);
+ATF_TEST_CASE_HEAD(short_read)
+{
+ set_md_var("descr", "Tests that a short read (one that fits in the "
+ "internal buffer) works when using systembuf");
+}
+ATF_TEST_CASE_BODY(short_read)
+{
+ test_read(64, 1024);
+}
+
+
+ATF_TEST_CASE(long_read);
+ATF_TEST_CASE_HEAD(long_read)
+{
+ set_md_var("descr", "Tests that a long read (one that does not fit in "
+ "the internal buffer) works when using systembuf");
+}
+ATF_TEST_CASE_BODY(long_read)
+{
+ test_read(64 * 1024, 1024);
+}
+
+
+ATF_TEST_CASE(short_write);
+ATF_TEST_CASE_HEAD(short_write)
+{
+ set_md_var("descr", "Tests that a short write (one that fits in the "
+ "internal buffer) works when using systembuf");
+}
+ATF_TEST_CASE_BODY(short_write)
+{
+ test_write(64, 1024);
+}
+
+
+ATF_TEST_CASE(long_write);
+ATF_TEST_CASE_HEAD(long_write)
+{
+ set_md_var("descr", "Tests that a long write (one that does not fit "
+ "in the internal buffer) works when using systembuf");
+}
+ATF_TEST_CASE_BODY(long_write)
+{
+ test_write(64 * 1024, 1024);
+}
+
+
+ATF_INIT_TEST_CASES(tcs)
+{
+ ATF_ADD_TEST_CASE(tcs, short_read);
+ ATF_ADD_TEST_CASE(tcs, long_read);
+ ATF_ADD_TEST_CASE(tcs, short_write);
+ ATF_ADD_TEST_CASE(tcs, long_write);
+}