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//===-- flang/unittests/Runtime/ListInputTest.cpp ---------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "CrashHandlerFixture.h"
#include "../../runtime/io-error.h"
#include "flang/Runtime/descriptor.h"
#include "flang/Runtime/io-api.h"
using namespace Fortran::runtime;
using namespace Fortran::runtime::io;
// Pads characters with whitespace when needed
void SetCharacter(char *to, std::size_t n, const char *from) {
auto len{std::strlen(from)};
std::memcpy(to, from, std::min(len, n));
if (len < n) {
std::memset(to + len, ' ', n - len);
}
}
struct InputTest : CrashHandlerFixture {};
TEST(InputTest, TestListInputAlphabet) {
constexpr int numInputBuffers{2};
constexpr int maxInputBufferLength{32};
char inputBuffers[numInputBuffers][maxInputBufferLength];
const char expectedOutput[]{
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ "};
int j{0};
// Use _two_ input buffers and _three_ output buffers. Note the `3*` in the
// _inputBuffers_.
SetCharacter(inputBuffers[j++], maxInputBufferLength,
"3*'abcdefghijklmnopqrstuvwxyzABC");
SetCharacter(
inputBuffers[j++], maxInputBufferLength, "DEFGHIJKLMNOPQRSTUVWXYZ'");
StaticDescriptor<1> staticDescriptor;
Descriptor &whole{staticDescriptor.descriptor()};
SubscriptValue extent[]{numInputBuffers};
whole.Establish(TypeCode{CFI_type_char}, maxInputBufferLength, &inputBuffers,
1, extent, CFI_attribute_pointer);
whole.Check();
auto *cookie{IONAME(BeginInternalArrayListInput)(whole)};
constexpr int numOutputBuffers{3};
constexpr int outputBufferLength{54};
char outputBuffers[numOutputBuffers][outputBufferLength]{};
for (j = 0; j < numOutputBuffers; ++j) {
IONAME(InputAscii)(cookie, outputBuffers[j], outputBufferLength - 1);
}
const auto status{IONAME(EndIoStatement)(cookie)};
ASSERT_EQ(status, 0) << "list-directed input failed, status "
<< static_cast<int>(status) << '\n';
// Verify results that the _two_ ascii inputs result in _three_ alphabets
for (j = 0; j < numOutputBuffers; ++j) {
ASSERT_EQ(std::strcmp(outputBuffers[j], expectedOutput), 0)
<< "wanted outputBuffers[" << j << "]=" << expectedOutput << ", got '"
<< outputBuffers[j] << "'\n";
}
}
TEST(InputTest, TestListInputIntegerList) {
constexpr int numBuffers{2};
constexpr int maxBufferLength{32};
char buffer[numBuffers][maxBufferLength];
int j{0};
SetCharacter(buffer[j++], maxBufferLength, "1 2 2*3 ,");
SetCharacter(buffer[j++], maxBufferLength, ",6,,8,2*");
StaticDescriptor<1> staticDescriptor;
Descriptor &whole{staticDescriptor.descriptor()};
SubscriptValue extent[]{numBuffers};
whole.Establish(TypeCode{CFI_type_char}, maxBufferLength, &buffer, 1, extent,
CFI_attribute_pointer);
whole.Check();
auto *cookie{IONAME(BeginInternalArrayListInput)(whole)};
constexpr int listInputLength{10};
// Negative numbers will be overwritten by _expectedOutput_, and positive
// numbers will not be as their indices are "Null values" of the Fortran 2018
// standard 13.10.3.2 in the format strings _buffer_
std::int64_t actualOutput[listInputLength]{
-1, -2, -3, -4, 5, -6, 7, -8, 9, 10};
const std::int64_t expectedOutput[listInputLength]{
1, 2, 3, 3, 5, 6, 7, 8, 9, 10};
for (j = 0; j < listInputLength; ++j) {
IONAME(InputInteger)(cookie, actualOutput[j]);
}
const auto status{IONAME(EndIoStatement)(cookie)};
ASSERT_EQ(status, 0) << "list-directed input failed, status "
<< static_cast<int>(status) << '\n';
// Verify the calls to _InputInteger_ resulted in _expectedOutput_
for (j = 0; j < listInputLength; ++j) {
ASSERT_EQ(actualOutput[j], expectedOutput[j])
<< "wanted actualOutput[" << j << "]==" << expectedOutput[j] << ", got "
<< actualOutput[j] << '\n';
}
}
TEST(InputTest, TestListInputInvalidFormatWithSingleSuccess) {
std::string formatBuffer{"1, g"};
constexpr int numBuffers{1};
StaticDescriptor<1> staticDescriptor;
Descriptor &whole{staticDescriptor.descriptor()};
SubscriptValue extent[]{numBuffers};
whole.Establish(TypeCode{CFI_type_char}, formatBuffer.size(),
formatBuffer.data(), 1, extent, CFI_attribute_pointer);
whole.Check();
auto *cookie{IONAME(BeginInternalArrayListInput)(whole)};
std::int64_t dummy;
// Perform _InputInteger_ once successfully
IONAME(InputInteger)(cookie, dummy);
// Perform failing InputInteger
ASSERT_DEATH(IONAME(InputInteger)(cookie, dummy),
"Bad character 'g' in INTEGER input field");
}
// Same test as _TestListInputInvalidFormatWithSingleSuccess_, however no
// successful call to _InputInteger_ is performed first.
TEST(InputTest, TestListInputInvalidFormat) {
std::string formatBuffer{"g"};
constexpr int numBuffers{1};
StaticDescriptor<1> staticDescriptor;
Descriptor &whole{staticDescriptor.descriptor()};
SubscriptValue extent[]{numBuffers};
whole.Establish(TypeCode{CFI_type_char}, formatBuffer.size(),
formatBuffer.data(), 1, extent, CFI_attribute_pointer);
whole.Check();
auto *cookie{IONAME(BeginInternalArrayListInput)(whole)};
std::int64_t dummy;
// Perform failing InputInteger
ASSERT_DEATH(IONAME(InputInteger)(cookie, dummy),
"Bad character 'g' in INTEGER input field");
}
using ParamTy = std::tuple<std::string, std::vector<int>>;
struct SimpleListInputTest : testing::TestWithParam<ParamTy> {};
TEST_P(SimpleListInputTest, TestListInput) {
auto [formatBuffer, expectedOutput] = GetParam();
constexpr int numBuffers{1};
StaticDescriptor<1> staticDescriptor;
Descriptor &whole{staticDescriptor.descriptor()};
SubscriptValue extent[]{numBuffers};
whole.Establish(TypeCode{CFI_type_char}, formatBuffer.size(),
formatBuffer.data(), 1, extent, CFI_attribute_pointer);
whole.Check();
auto *cookie{IONAME(BeginInternalArrayListInput)(whole)};
const auto listInputLength{expectedOutput.size()};
std::vector<std::int64_t> actualOutput(listInputLength);
for (std::size_t j = 0; j < listInputLength; ++j) {
IONAME(InputInteger)(cookie, actualOutput[j]);
}
const auto status{IONAME(EndIoStatement)(cookie)};
ASSERT_EQ(status, 0) << "list-directed input failed, status "
<< static_cast<int>(status) << '\n';
// Verify the calls to _InputInteger_ resulted in _expectedOutput_
for (std::size_t j = 0; j < listInputLength; ++j) {
ASSERT_EQ(actualOutput[j], expectedOutput[j])
<< "wanted actualOutput[" << j << "]==" << expectedOutput[j] << ", got "
<< actualOutput[j] << '\n';
}
}
INSTANTIATE_TEST_SUITE_P(SimpleListInputTestInstantiation, SimpleListInputTest,
testing::Values(std::make_tuple("", std::vector<int>{}),
std::make_tuple("0", std::vector<int>{}),
std::make_tuple("1", std::vector<int>{1}),
std::make_tuple("1, 2", std::vector<int>{1, 2}),
std::make_tuple("3*2", std::vector<int>{2, 2, 2})));