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Diffstat (limited to 'src/fmt/test/scan-test.cc')
-rw-r--r-- | src/fmt/test/scan-test.cc | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/src/fmt/test/scan-test.cc b/src/fmt/test/scan-test.cc new file mode 100644 index 000000000..7e327ea3f --- /dev/null +++ b/src/fmt/test/scan-test.cc @@ -0,0 +1,116 @@ +// 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); +} |