| // 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.h" |
| #include "gtest-extra.h" |
| |
| TEST(ScanTest, ReadText) { |
| fmt::string_view s = "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(ScanTest, ReadInt) { |
| int n = 0; |
| fmt::scan("42", "{}", n); |
| EXPECT_EQ(n, 42); |
| fmt::scan("-42", "{}", n); |
| EXPECT_EQ(n, -42); |
| } |
| |
| TEST(ScanTest, ReadLongLong) { |
| long long n = 0; |
| fmt::scan("42", "{}", n); |
| EXPECT_EQ(n, 42); |
| fmt::scan("-42", "{}", n); |
| EXPECT_EQ(n, -42); |
| } |
| |
| TEST(ScanTest, ReadUInt) { |
| unsigned n = 0; |
| fmt::scan("42", "{}", n); |
| EXPECT_EQ(n, 42); |
| EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error, |
| "invalid input"); |
| } |
| |
| TEST(ScanTest, ReadULongLong) { |
| 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(ScanTest, ReadString) { |
| std::string s; |
| fmt::scan("foo", "{}", s); |
| EXPECT_EQ(s, "foo"); |
| } |
| |
| TEST(ScanTest, ReadStringView) { |
| fmt::string_view s; |
| 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(ScanTest, ReadCustom) { |
| const char* 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(ScanTest, InvalidFormat) { |
| 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(ScanTest, Example) { |
| std::string key; |
| int value; |
| fmt::scan("answer = 42", "{} = {}", key, value); |
| EXPECT_EQ(key, "answer"); |
| EXPECT_EQ(value, 42); |
| } |