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loader: Handle unexpected error code from set_option()

This commit is contained in:
Paweł Bylica 2019-11-19 13:32:48 +01:00
parent 0d5929b2a3
commit b76e6d1a02
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GPG Key ID: 7A0C037434FE77EF
2 changed files with 43 additions and 3 deletions
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6
lib/loader/loader.c
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@ -297,6 +297,12 @@ struct evmc_vm* evmc_load_and_configure(const char* config, enum evmc_loader_err
"%s (%s): unsupported value '%s' for option '%s'", vm->name, path,
option, name);
goto exit;
default:
ec = set_error(EVMC_LOADER_INVALID_OPTION_VALUE,
"%s (%s): unknown error when setting value '%s' for option '%s'",
vm->name, path, option, name);
goto exit;
}
}

40
test/unittests/test_loader.cpp
View File

@ -37,6 +37,7 @@ protected:
static int destroy_count;
static std::unordered_map<std::string, std::vector<std::string>> supported_options;
static std::vector<std::pair<std::string, std::string>> recorded_options;
static const std::string option_name_causing_unknown_error;
loader() noexcept
{
@ -63,9 +64,18 @@ protected:
if (it == supported_options.end())
return EVMC_SET_OPTION_INVALID_NAME;
const auto value_supported =
std::find(std::begin(it->second), std::end(it->second), value) != std::end(it->second);
return value_supported ? EVMC_SET_OPTION_SUCCESS : EVMC_SET_OPTION_INVALID_VALUE;
if (std::find(std::begin(it->second), std::end(it->second), value) != std::end(it->second))
return EVMC_SET_OPTION_SUCCESS;
if (name == option_name_causing_unknown_error)
{
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
return static_cast<evmc_set_option_result>(-42);
#pragma GCC diagnostic pop
}
return EVMC_SET_OPTION_INVALID_VALUE;
}
/// Creates a VM mock with only destroy() method.
@ -103,6 +113,9 @@ int loader::destroy_count = 0;
std::unordered_map<std::string, std::vector<std::string>> loader::supported_options;
std::vector<std::pair<std::string, std::string>> loader::recorded_options;
/// The option name that will return unexpected error code from the set_option() method.
const std::string loader::option_name_causing_unknown_error{"raise_unknown"};
static evmc_vm* create_aaa()
{
return (evmc_vm*)0xaaa;
@ -626,3 +639,24 @@ TEST_F(loader, load_and_configure_error_not_wanted)
EXPECT_STREQ(evmc_last_error_msg(), "vm_with_set_option (path): unknown option 'f'");
EXPECT_FALSE(evmc_last_error_msg());
}
TEST_F(loader, load_and_configure_unknown_set_option_error_code)
{
// Enable "option name causing unknown error".
supported_options[option_name_causing_unknown_error] = {""};
setup("path", "evmc_create", create_vm_with_set_option);
evmc_loader_error_code ec;
const auto config_str = "path," + option_name_causing_unknown_error + "=1";
auto vm = evmc_load_and_configure(config_str.c_str(), &ec);
EXPECT_FALSE(vm);
ASSERT_EQ(recorded_options.size(), 1u);
EXPECT_EQ(recorded_options[0].first, option_name_causing_unknown_error);
EXPECT_EQ(recorded_options[0].second, "1");
EXPECT_EQ(ec, EVMC_LOADER_INVALID_OPTION_VALUE);
EXPECT_EQ(evmc_last_error_msg(),
"vm_with_set_option (path): unknown error when setting value '1' for option '" +
option_name_causing_unknown_error + "'");
EXPECT_EQ(destroy_count, create_count);
}