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Added test of error code that forces the insufficient buffer code path.

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This commit is contained in:
Michael Winterberg 2016-03-04 17:47:37 -08:00
parent 2a05a87fe7
commit 8f4b8edb8b
1 changed files with 21 additions and 0 deletions
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21
test/util-test.cc
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@ -873,6 +873,27 @@ TEST(UtilTest, FormatWindowsError) {
EXPECT_EQ(fmt::format("error {}", ERROR_FILE_EXISTS), actual_message.str());
}
TEST(UtilTest, FormatLongWindowsError) {
LPWSTR message = 0;
// this error code is not available on all Windows platforms and
// Windows SDKs, so do not fail the test if the error string cannot
// be retrieved.
const int provisioning_not_allowed = 0x80284013L /*TBS_E_PROVISIONING_NOT_ALLOWED*/;
if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, 0,
provisioning_not_allowed, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
reinterpret_cast<LPWSTR>(&message), 0, 0) == 0) {
return;
}
fmt::internal::UTF16ToUTF8 utf8_message(message);
LocalFree(message);
fmt::MemoryWriter actual_message;
fmt::internal::format_windows_error(
actual_message, provisioning_not_allowed, "test");
EXPECT_EQ(fmt::format("test: {}", utf8_message.str()),
actual_message.str());
}
TEST(UtilTest, WindowsError) {
check_throw_error<fmt::WindowsError>(
ERROR_FILE_EXISTS, fmt::internal::format_windows_error);