blame: source/misc/embedded_libs/fmt-8.1.1/test/scan-test.cc

// Formatting library for C++ - scanning API test

//

// Copyright (c) 2019 - present, Victor Zverovich

// All rights reserved.

//

// For the license information refer to format.h.

#include "scan.h"

#include <time.h>

#include <climits>

#include "gmock/gmock.h"

#include "gtest-extra.h"

TEST(scan_test, read_text) {

  auto s = fmt::string_view("foo");

  auto end = fmt::scan(s, "foo");

  EXPECT_EQ(end, s.end());

  EXPECT_THROW_MSG(fmt::scan("fob", "foo"), fmt::format_error, "invalid input");

}

TEST(scan_test, read_int) {

  auto n = int();

  fmt::scan("42", "{}", n);

  EXPECT_EQ(n, 42);

  fmt::scan("-42", "{}", n);

  EXPECT_EQ(n, -42);

}

TEST(scan_test, read_longlong) {

  long long n = 0;

  fmt::scan("42", "{}", n);

  EXPECT_EQ(n, 42);

  fmt::scan("-42", "{}", n);

  EXPECT_EQ(n, -42);

}

TEST(scan_test, read_uint) {

  auto n = unsigned();

  fmt::scan("42", "{}", n);

  EXPECT_EQ(n, 42);

  EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error,

                   "invalid input");

}

TEST(scan_test, read_ulonglong) {

  unsigned long long n = 0;

  fmt::scan("42", "{}", n);

  EXPECT_EQ(n, 42);

  EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error,

                   "invalid input");

}

TEST(scan_test, read_string) {

  auto s = std::string();

  fmt::scan("foo", "{}", s);

  EXPECT_EQ(s, "foo");

}

TEST(scan_test, read_string_view) {

  auto s = fmt::string_view();

  fmt::scan("foo", "{}", s);

  EXPECT_EQ(s, "foo");

}

#ifndef _WIN32

namespace fmt {

template <> struct scanner<tm> {

  std::string format;

  scan_parse_context::iterator parse(scan_parse_context& ctx) {

    auto it = ctx.begin();

    if (it != ctx.end() && *it == ':') ++it;

    auto end = it;

    while (end != ctx.end() && *end != '}') ++end;

    format.reserve(detail::to_unsigned(end - it + 1));

    format.append(it, end);

    format.push_back('\0');

    return end;

  }

  template <class ScanContext>

  typename ScanContext::iterator scan(tm& t, ScanContext& ctx) {

    auto result = strptime(ctx.begin(), format.c_str(), &t);

    if (!result) throw format_error("failed to parse time");

    return result;

  }

};

}  // namespace fmt

TEST(scan_test, read_custom) {

  auto input = "Date: 1985-10-25";

  auto t = tm();

  fmt::scan(input, "Date: {0:%Y-%m-%d}", t);

  EXPECT_EQ(t.tm_year, 85);

  EXPECT_EQ(t.tm_mon, 9);

  EXPECT_EQ(t.tm_mday, 25);

}

#endif

TEST(scan_test, invalid_format) {

  EXPECT_THROW_MSG(fmt::scan("", "{}"), fmt::format_error,

                   "argument index out of range");

  EXPECT_THROW_MSG(fmt::scan("", "{"), fmt::format_error,

                   "invalid format string");

}

TEST(scan_test, example) {

  auto key = std::string();

  auto value = int();

  fmt::scan("answer = 42", "{} = {}", key, value);

  EXPECT_EQ(key, "answer");

  EXPECT_EQ(value, 42);

}