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#include <algorithm>
#include <c10/util/ArrayRef.h>
#include <c10/util/Logging.h>
#include <gtest/gtest.h>
namespace c10_test {
using std::set;
using std::string;
using std::vector;
TEST(LoggingTest, TestEnforceTrue) {
// This should just work.
CAFFE_ENFORCE(true, "Isn't it?");
}
TEST(LoggingTest, TestEnforceFalse) {
bool kFalse = false;
std::swap(FLAGS_caffe2_use_fatal_for_enforce, kFalse);
try {
CAFFE_ENFORCE(false, "This throws.");
// This should never be triggered.
ADD_FAILURE();
} catch (const ::c10::Error&) {
}
std::swap(FLAGS_caffe2_use_fatal_for_enforce, kFalse);
}
TEST(LoggingTest, TestEnforceEquals) {
int x = 4;
int y = 5;
int z = 0;
try {
CAFFE_ENFORCE_THAT(std::equal_to<void>(), ==, ++x, ++y, "Message: ", z++);
// This should never be triggered.
ADD_FAILURE();
} catch (const ::c10::Error& err) {
auto errStr = std::string(err.what());
EXPECT_NE(errStr.find("5 vs 6"), string::npos);
EXPECT_NE(errStr.find("Message: 0"), string::npos);
}
// arguments are expanded only once
CAFFE_ENFORCE_THAT(std::equal_to<void>(), ==, ++x, y);
EXPECT_EQ(x, 6);
EXPECT_EQ(y, 6);
EXPECT_EQ(z, 1);
}
namespace {
struct EnforceEqWithCaller {
void test(const char* x) {
CAFFE_ENFORCE_EQ_WITH_CALLER(1, 1, "variable: ", x, " is a variable");
}
};
} // namespace
TEST(LoggingTest, TestEnforceMessageVariables) {
const char* const x = "hello";
CAFFE_ENFORCE_EQ(1, 1, "variable: ", x, " is a variable");
EnforceEqWithCaller e;
e.test(x);
}
TEST(
LoggingTest,
EnforceEqualsObjectWithReferenceToTemporaryWithoutUseOutOfScope) {
std::vector<int> x = {1, 2, 3, 4};
// This case is a little tricky. We have a temporary
// std::initializer_list to which our temporary ArrayRef
// refers. Temporary lifetime extension by binding a const reference
// to the ArrayRef doesn't extend the lifetime of the
// std::initializer_list, just the ArrayRef, so we end up with a
// dangling ArrayRef. This test forces the implementation to get it
// right.
CAFFE_ENFORCE_EQ(x, (at::ArrayRef<int>{1, 2, 3, 4}));
}
namespace {
struct Noncopyable {
int x;
explicit Noncopyable(int a) : x(a) {}
Noncopyable(const Noncopyable&) = delete;
Noncopyable(Noncopyable&&) = delete;
Noncopyable& operator=(const Noncopyable&) = delete;
Noncopyable& operator=(Noncopyable&&) = delete;
bool operator==(const Noncopyable& rhs) const {
return x == rhs.x;
}
};
std::ostream& operator<<(std::ostream& out, const Noncopyable& nc) {
out << "Noncopyable(" << nc.x << ")";
return out;
}
} // namespace
TEST(LoggingTest, DoesntCopyComparedObjects) {
CAFFE_ENFORCE_EQ(Noncopyable(123), Noncopyable(123));
}
TEST(LoggingTest, EnforceShowcase) {
// It's not really a test but rather a convenient thing that you can run and
// see all messages
int one = 1;
int two = 2;
int three = 3;
#define WRAP_AND_PRINT(exp) \
try { \
exp; \
} catch (const ::c10::Error&) { \
/* ::c10::Error already does LOG(ERROR) */ \
}
WRAP_AND_PRINT(CAFFE_ENFORCE_EQ(one, two));
WRAP_AND_PRINT(CAFFE_ENFORCE_NE(one * 2, two));
WRAP_AND_PRINT(CAFFE_ENFORCE_GT(one, two));
WRAP_AND_PRINT(CAFFE_ENFORCE_GE(one, two));
WRAP_AND_PRINT(CAFFE_ENFORCE_LT(three, two));
WRAP_AND_PRINT(CAFFE_ENFORCE_LE(three, two));
WRAP_AND_PRINT(CAFFE_ENFORCE_EQ(
one * two + three, three * two, "It's a pretty complicated expression"));
WRAP_AND_PRINT(CAFFE_ENFORCE_THAT(
std::equal_to<void>(), ==, one * two + three, three * two));
}
TEST(LoggingTest, Join) {
auto s = c10::Join(", ", vector<int>({1, 2, 3}));
EXPECT_EQ(s, "1, 2, 3");
s = c10::Join(":", vector<string>());
EXPECT_EQ(s, "");
s = c10::Join(", ", set<int>({3, 1, 2}));
EXPECT_EQ(s, "1, 2, 3");
}
TEST(LoggingTest, TestDanglingElse) {
if (true)
TORCH_DCHECK_EQ(1, 1);
else
GTEST_FAIL();
}
#if GTEST_HAS_DEATH_TEST
TEST(LoggingDeathTest, TestEnforceUsingFatal) {
bool kTrue = true;
std::swap(FLAGS_caffe2_use_fatal_for_enforce, kTrue);
// NOLINTNEXTLINE(cppcoreguidelines-avoid-goto,hicpp-avoid-goto)
EXPECT_DEATH(CAFFE_ENFORCE(false, "This goes fatal."), "");
std::swap(FLAGS_caffe2_use_fatal_for_enforce, kTrue);
}
#endif
} // namespace c10_test
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