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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/linux/safe_readlink_unittest.cc')
-rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/linux/safe_readlink_unittest.cc | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/linux/safe_readlink_unittest.cc b/toolkit/crashreporter/google-breakpad/src/common/linux/safe_readlink_unittest.cc new file mode 100644 index 000000000..d346b2a80 --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/common/linux/safe_readlink_unittest.cc @@ -0,0 +1,89 @@ +// Copyright (c) 2011, Google Inc. +// 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. + +// safe_readlink_unittest.cc: Unit tests for google_breakpad::SafeReadLink. + +#include "breakpad_googletest_includes.h" +#include "common/linux/safe_readlink.h" + +using google_breakpad::SafeReadLink; + +TEST(SafeReadLinkTest, ZeroBufferSize) { + char buffer[1]; + EXPECT_FALSE(SafeReadLink("/proc/self/exe", buffer, 0)); +} + +TEST(SafeReadLinkTest, BufferSizeTooSmall) { + char buffer[1]; + EXPECT_FALSE(SafeReadLink("/proc/self/exe", buffer, 1)); +} + +TEST(SafeReadLinkTest, BoundaryBufferSize) { + char buffer[PATH_MAX]; + EXPECT_TRUE(SafeReadLink("/proc/self/exe", buffer, sizeof(buffer))); + size_t path_length = strlen(buffer); + EXPECT_LT(0U, path_length); + EXPECT_GT(sizeof(buffer), path_length); + + // Buffer size equals to the expected path length plus 1 for the NULL byte. + char buffer2[PATH_MAX]; + EXPECT_TRUE(SafeReadLink("/proc/self/exe", buffer2, path_length + 1)); + EXPECT_EQ(path_length, strlen(buffer2)); + EXPECT_EQ(0, strncmp(buffer, buffer2, PATH_MAX)); + + // Buffer size equals to the expected path length. + EXPECT_FALSE(SafeReadLink("/proc/self/exe", buffer, path_length)); +} + +TEST(SafeReadLinkTest, NonexistentPath) { + char buffer[PATH_MAX]; + EXPECT_FALSE(SafeReadLink("nonexistent_path", buffer, sizeof(buffer))); +} + +TEST(SafeReadLinkTest, NonSymbolicLinkPath) { + char actual_path[PATH_MAX]; + EXPECT_TRUE(SafeReadLink("/proc/self/exe", actual_path, sizeof(actual_path))); + + char buffer[PATH_MAX]; + EXPECT_FALSE(SafeReadLink(actual_path, buffer, sizeof(buffer))); +} + +TEST(SafeReadLinkTest, DeduceBufferSizeFromCharArray) { + char buffer[PATH_MAX]; + char* buffer_pointer = buffer; + EXPECT_TRUE(SafeReadLink("/proc/self/exe", buffer_pointer, sizeof(buffer))); + size_t path_length = strlen(buffer); + + // Use the template version of SafeReadLink to deduce the buffer size + // from the char array. + char buffer2[PATH_MAX]; + EXPECT_TRUE(SafeReadLink("/proc/self/exe", buffer2)); + EXPECT_EQ(path_length, strlen(buffer2)); + EXPECT_EQ(0, strncmp(buffer, buffer2, PATH_MAX)); +} |