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117 lines
2.8 KiB
C++
117 lines
2.8 KiB
C++
// Formatting library for C++ - scanning API test
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//
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// Copyright (c) 2019 - present, Victor Zverovich
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// All rights reserved.
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//
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// For the license information refer to format.h.
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#include "scan.h"
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#include <time.h>
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#include <climits>
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#include "gmock/gmock.h"
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#include "gtest-extra.h"
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TEST(scan_test, read_text) {
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auto s = fmt::string_view("foo");
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auto end = fmt::scan(s, "foo");
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EXPECT_EQ(end, s.end());
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EXPECT_THROW_MSG(fmt::scan("fob", "foo"), fmt::format_error, "invalid input");
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}
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TEST(scan_test, read_int) {
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auto n = int();
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fmt::scan("42", "{}", n);
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EXPECT_EQ(n, 42);
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fmt::scan("-42", "{}", n);
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EXPECT_EQ(n, -42);
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}
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TEST(scan_test, read_longlong) {
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long long n = 0;
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fmt::scan("42", "{}", n);
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EXPECT_EQ(n, 42);
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fmt::scan("-42", "{}", n);
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EXPECT_EQ(n, -42);
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}
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TEST(scan_test, read_uint) {
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auto n = unsigned();
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fmt::scan("42", "{}", n);
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EXPECT_EQ(n, 42);
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EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error,
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"invalid input");
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}
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TEST(scan_test, read_ulonglong) {
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unsigned long long n = 0;
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fmt::scan("42", "{}", n);
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EXPECT_EQ(n, 42);
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EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error,
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"invalid input");
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}
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TEST(scan_test, read_string) {
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auto s = std::string();
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fmt::scan("foo", "{}", s);
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EXPECT_EQ(s, "foo");
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}
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TEST(scan_test, read_string_view) {
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auto s = fmt::string_view();
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fmt::scan("foo", "{}", s);
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EXPECT_EQ(s, "foo");
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}
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#ifdef FMT_HAVE_STRPTIME
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namespace fmt {
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template <> struct scanner<tm> {
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std::string format;
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auto parse(scan_parse_context& ctx) -> scan_parse_context::iterator {
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auto it = ctx.begin();
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if (it != ctx.end() && *it == ':') ++it;
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auto end = it;
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while (end != ctx.end() && *end != '}') ++end;
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format.reserve(detail::to_unsigned(end - it + 1));
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format.append(it, end);
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format.push_back('\0');
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return end;
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}
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template <class ScanContext>
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auto scan(tm& t, ScanContext& ctx) const -> typename ScanContext::iterator {
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auto result = strptime(ctx.begin(), format.c_str(), &t);
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if (!result) throw format_error("failed to parse time");
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return result;
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}
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};
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} // namespace fmt
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TEST(scan_test, read_custom) {
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auto input = "Date: 1985-10-25";
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auto t = tm();
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fmt::scan(input, "Date: {0:%Y-%m-%d}", t);
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EXPECT_EQ(t.tm_year, 85);
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EXPECT_EQ(t.tm_mon, 9);
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EXPECT_EQ(t.tm_mday, 25);
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}
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#endif
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TEST(scan_test, invalid_format) {
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EXPECT_THROW_MSG(fmt::scan("", "{}"), fmt::format_error,
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"argument index out of range");
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EXPECT_THROW_MSG(fmt::scan("", "{"), fmt::format_error,
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"invalid format string");
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}
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TEST(scan_test, example) {
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auto key = std::string();
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auto value = int();
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fmt::scan("answer = 42", "{} = {}", key, value);
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EXPECT_EQ(key, "answer");
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EXPECT_EQ(value, 42);
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}
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