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🛠 Add basic array safety functions and backwards-compatible result type (#3805)

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This commit is contained in:
The Phantom Derpstorm
2024-01-16 10:01:15 -05:00
committed by GitHub
parent 64091b7a25
commit 13ec66bf78
2 changed files with 82 additions and 8 deletions
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test/base-test.cc
+44 -2
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@@ -9,15 +9,16 @@
#include "test-assert.h"
// clang-format on
#include "fmt/base.h"
#include <climits> // INT_MAX
#include <cstring> // std::strlen
#include <functional> // std::equal_to
#include <iterator> // std::back_insert_iterator
#include <iterator> // std::back_insert_iterator, std::distance
#include <limits> // std::numeric_limits
#include <string> // std::string
#include <type_traits> // std::is_same
#include "fmt/base.h"
#include "gmock/gmock.h"
using fmt::string_view;
@@ -692,6 +693,47 @@ TEST(core_test, format_to) {
EXPECT_EQ(s, "42");
}
TEST(core_test, format_to_c_array) {
char buffer[4];
auto result = fmt::format_to(buffer, "{}", 12345);
EXPECT_EQ(4, std::distance(&buffer[0], result.out));
EXPECT_EQ(0, std::distance(result.out, result.out_last));
EXPECT_EQ(buffer + 4, result.out);
EXPECT_EQ("1234", fmt::string_view(buffer, 4));
result = fmt::format_to(buffer, "{:s}", "foobar");
EXPECT_EQ(4, std::distance(&buffer[0], result.out));
EXPECT_EQ(0, std::distance(result.out, result.out_last));
EXPECT_EQ(buffer + 4, result.out);
EXPECT_EQ("foob", fmt::string_view(buffer, 4));
buffer[0] = 'x';
buffer[1] = 'x';
buffer[2] = 'x';
buffer[3] = 'x';
result = fmt::format_to(buffer, "{}", 'A');
EXPECT_EQ(1, std::distance(&buffer[0], result.out));
EXPECT_EQ(3, std::distance(result.out, result.out_last));
EXPECT_EQ(buffer + 1, result.out);
EXPECT_EQ("Axxx", fmt::string_view(buffer, 4));
result = fmt::format_to(buffer, "{}{} ", 'B', 'C');
EXPECT_EQ(3, std::distance(&buffer[0], result.out));
EXPECT_EQ(1, std::distance(result.out, result.out_last));
EXPECT_EQ(buffer + 3, result.out);
EXPECT_EQ("BC x", fmt::string_view(buffer, 4));
result = fmt::format_to(buffer, "{}", "ABCDE");
EXPECT_EQ(4, std::distance(&buffer[0], result.out));
EXPECT_EQ(0, std::distance(result.out, result.out_last));
EXPECT_EQ("ABCD", fmt::string_view(buffer, 4));
result = fmt::format_to(buffer, "{}", std::string(1000, '*'));
EXPECT_EQ(4, std::distance(&buffer[0], result.out));
EXPECT_EQ(0, std::distance(result.out, result.out_last));
EXPECT_EQ("****", fmt::string_view(buffer, 4));
}
#ifdef __cpp_lib_byte
TEST(core_test, format_byte) {
auto s = std::string();