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//===-- flang/unittests/Runtime/Format.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/connection.h"
#include "../runtime/format-implementation.h"
#include "../runtime/io-error.h"
#include <optional>
#include <string>
#include <tuple>
#include <vector>
using namespace Fortran::runtime;
using namespace Fortran::runtime::io;
using namespace std::literals::string_literals;
using ResultsTy = std::vector<std::string>;
// A test harness context for testing FormatControl
class TestFormatContext : public IoErrorHandler {
public:
using CharType = char;
TestFormatContext() : IoErrorHandler{"format.cpp", 1} {}
bool Emit(const char *, std::size_t, std::size_t = 0);
bool AdvanceRecord(int = 1);
void HandleRelativePosition(std::int64_t);
void HandleAbsolutePosition(std::int64_t);
void Report(const std::optional<DataEdit> &);
ResultsTy results;
MutableModes &mutableModes() { return mutableModes_; }
ConnectionState &GetConnectionState() { return connectionState_; }
private:
MutableModes mutableModes_;
ConnectionState connectionState_;
};
bool TestFormatContext::Emit(const char *s, std::size_t len, std::size_t) {
std::string str{s, len};
results.push_back("'"s + str + '\'');
return true;
}
bool TestFormatContext::AdvanceRecord(int n) {
while (n-- > 0) {
results.emplace_back("/");
}
return true;
}
void TestFormatContext::HandleAbsolutePosition(std::int64_t n) {
results.push_back("T"s + std::to_string(n));
}
void TestFormatContext::HandleRelativePosition(std::int64_t n) {
if (n < 0) {
results.push_back("TL"s + std::to_string(-n));
} else {
results.push_back(std::to_string(n) + 'X');
}
}
void TestFormatContext::Report(const std::optional<DataEdit> &edit) {
if (edit) {
std::string str{edit->descriptor};
if (edit->repeat != 1) {
str = std::to_string(edit->repeat) + '*' + str;
}
if (edit->variation) {
str += edit->variation;
}
if (edit->width) {
str += std::to_string(*edit->width);
}
if (edit->digits) {
str += "."s + std::to_string(*edit->digits);
}
if (edit->expoDigits) {
str += "E"s + std::to_string(*edit->expoDigits);
}
// modes?
results.push_back(str);
} else {
results.push_back("(nullopt)"s);
}
}
struct FormatTests : public CrashHandlerFixture {};
TEST(FormatTests, FormatStringTraversal) {
using ParamsTy = std::tuple<int, const char *, ResultsTy, int>;
static const std::vector<ParamsTy> params{
{1, "('PI=',F9.7)", ResultsTy{"'PI='", "F9.7"}, 1},
{1, "(3HPI=F9.7)", ResultsTy{"'PI='", "F9.7"}, 1},
{1, "(3HPI=/F9.7)", ResultsTy{"'PI='", "/", "F9.7"}, 1},
{2, "('PI=',F9.7)", ResultsTy{"'PI='", "F9.7", "/", "'PI='", "F9.7"}, 1},
{2, "(2('PI=',F9.7),'done')",
ResultsTy{"'PI='", "F9.7", "'PI='", "F9.7", "'done'"}, 1},
{2, "(3('PI=',F9.7,:),'tooFar')",
ResultsTy{"'PI='", "F9.7", "'PI='", "F9.7"}, 1},
{2, "(*('PI=',F9.7,:))", ResultsTy{"'PI='", "F9.7", "'PI='", "F9.7"}, 1},
{1, "(3F9.7)", ResultsTy{"2*F9.7"}, 2},
};
for (const auto &[n, format, expect, repeat] : params) {
TestFormatContext context;
FormatControl<decltype(context)> control{
context, format, std::strlen(format)};
for (auto i{0}; i < n; i++) {
context.Report(/*edit=*/control.GetNextDataEdit(context, repeat));
}
control.Finish(context);
auto iostat{context.GetIoStat()};
ASSERT_EQ(iostat, 0) << "Expected iostat == 0, but GetIoStat() == "
<< iostat;
// Create strings of the expected/actual results for printing errors
std::string allExpectedResults{""}, allActualResults{""};
for (const auto &res : context.results) {
allActualResults += " "s + res;
}
for (const auto &res : expect) {
allExpectedResults += " "s + res;
}
const auto &results = context.results;
ASSERT_EQ(expect, results) << "Expected '" << allExpectedResults
<< "' but got '" << allActualResults << "'";
}
}
struct InvalidFormatFailure : CrashHandlerFixture {};
TEST(InvalidFormatFailure, ParenMismatch) {
static constexpr const char *format{"("};
static constexpr int repeat{1};
TestFormatContext context;
FormatControl<decltype(context)> control{
context, format, std::strlen(format)};
ASSERT_DEATH(
context.Report(/*edit=*/control.GetNextDataEdit(context, repeat)),
R"(FORMAT missing at least one '\)')");
}
TEST(InvalidFormatFailure, MissingPrecision) {
static constexpr const char *format{"(F9.)"};
static constexpr int repeat{1};
TestFormatContext context;
FormatControl<decltype(context)> control{
context, format, std::strlen(format)};
ASSERT_DEATH(
context.Report(/*edit=*/control.GetNextDataEdit(context, repeat)),
R"(Invalid FORMAT: integer expected at '\)')");
}
TEST(InvalidFormatFailure, MissingFormatWidth) {
static constexpr const char *format{"(F.9)"};
static constexpr int repeat{1};
TestFormatContext context;
FormatControl<decltype(context)> control{
context, format, std::strlen(format)};
ASSERT_DEATH(
context.Report(/*edit=*/control.GetNextDataEdit(context, repeat)),
"Invalid FORMAT: integer expected at '.'");
}
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