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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/fmt/test/args-test.cc | |
parent | Initial commit. (diff) | |
download | ceph-upstream/18.2.2.tar.xz ceph-upstream/18.2.2.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/fmt/test/args-test.cc | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/src/fmt/test/args-test.cc b/src/fmt/test/args-test.cc new file mode 100644 index 000000000..aa01fa4e0 --- /dev/null +++ b/src/fmt/test/args-test.cc @@ -0,0 +1,186 @@ +// Formatting library for C++ - dynamic argument store tests +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#include "fmt/args.h" + +#include <memory> + +#include "gtest/gtest.h" + +TEST(args_test, basic) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + store.push_back(42); + store.push_back("abc1"); + store.push_back(1.5f); + EXPECT_EQ("42 and abc1 and 1.5", fmt::vformat("{} and {} and {}", store)); +} + +TEST(args_test, strings_and_refs) { + // Unfortunately the tests are compiled with old ABI so strings use COW. + fmt::dynamic_format_arg_store<fmt::format_context> store; + char str[] = "1234567890"; + store.push_back(str); + store.push_back(std::cref(str)); + store.push_back(fmt::string_view{str}); + str[0] = 'X'; + + auto result = fmt::vformat("{} and {} and {}", store); + EXPECT_EQ("1234567890 and X234567890 and X234567890", result); +} + +struct custom_type { + int i = 0; +}; + +FMT_BEGIN_NAMESPACE +template <> struct formatter<custom_type> { + auto parse(format_parse_context& ctx) const -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename FormatContext> + auto format(const custom_type& p, FormatContext& ctx) -> decltype(ctx.out()) { + return format_to(ctx.out(), "cust={}", p.i); + } +}; +FMT_END_NAMESPACE + +TEST(args_test, custom_format) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + auto c = custom_type(); + store.push_back(c); + ++c.i; + store.push_back(c); + ++c.i; + store.push_back(std::cref(c)); + ++c.i; + auto result = fmt::vformat("{} and {} and {}", store); + EXPECT_EQ("cust=0 and cust=1 and cust=3", result); +} + +struct to_stringable { + friend fmt::string_view to_string_view(to_stringable) { return {}; } +}; + +FMT_BEGIN_NAMESPACE +template <> struct formatter<to_stringable> { + auto parse(format_parse_context& ctx) const -> decltype(ctx.begin()) { + return ctx.begin(); + } + + auto format(to_stringable, format_context& ctx) -> decltype(ctx.out()) { + return ctx.out(); + } +}; +FMT_END_NAMESPACE + +TEST(args_test, to_string_and_formatter) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + auto s = to_stringable(); + store.push_back(s); + store.push_back(std::cref(s)); + fmt::vformat("", store); +} + +TEST(args_test, named_int) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + store.push_back(fmt::arg("a1", 42)); + EXPECT_EQ("42", fmt::vformat("{a1}", store)); +} + +TEST(args_test, named_strings) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + char str[] = "1234567890"; + store.push_back(fmt::arg("a1", str)); + store.push_back(fmt::arg("a2", std::cref(str))); + str[0] = 'X'; + EXPECT_EQ("1234567890 and X234567890", fmt::vformat("{a1} and {a2}", store)); +} + +TEST(args_test, named_arg_by_ref) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + char band[] = "Rolling Stones"; + store.push_back(fmt::arg("band", std::cref(band))); + band[9] = 'c'; // Changing band affects the output. + EXPECT_EQ(fmt::vformat("{band}", store), "Rolling Scones"); +} + +TEST(args_test, named_custom_format) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + auto c = custom_type(); + store.push_back(fmt::arg("c1", c)); + ++c.i; + store.push_back(fmt::arg("c2", c)); + ++c.i; + store.push_back(fmt::arg("c_ref", std::cref(c))); + ++c.i; + auto result = fmt::vformat("{c1} and {c2} and {c_ref}", store); + EXPECT_EQ("cust=0 and cust=1 and cust=3", result); +} + +TEST(args_test, clear) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + store.push_back(42); + + auto result = fmt::vformat("{}", store); + EXPECT_EQ("42", result); + + store.push_back(43); + result = fmt::vformat("{} and {}", store); + EXPECT_EQ("42 and 43", result); + + store.clear(); + store.push_back(44); + result = fmt::vformat("{}", store); + EXPECT_EQ("44", result); +} + +TEST(args_test, reserve) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + store.reserve(2, 1); + store.push_back(1.5f); + store.push_back(fmt::arg("a1", 42)); + auto result = fmt::vformat("{a1} and {}", store); + EXPECT_EQ("42 and 1.5", result); +} + +struct copy_throwable { + copy_throwable() {} + copy_throwable(const copy_throwable&) { throw "deal with it"; } +}; + +FMT_BEGIN_NAMESPACE +template <> struct formatter<copy_throwable> { + auto parse(format_parse_context& ctx) const -> decltype(ctx.begin()) { + return ctx.begin(); + } + auto format(copy_throwable, format_context& ctx) -> decltype(ctx.out()) { + return ctx.out(); + } +}; +FMT_END_NAMESPACE + +TEST(args_test, throw_on_copy) { + fmt::dynamic_format_arg_store<fmt::format_context> store; + store.push_back(std::string("foo")); + try { + store.push_back(copy_throwable()); + } catch (...) { + } + EXPECT_EQ(fmt::vformat("{}", store), "foo"); +} + +TEST(args_test, move_constructor) { + using store_type = fmt::dynamic_format_arg_store<fmt::format_context>; + auto store = std::unique_ptr<store_type>(new store_type()); + store->push_back(42); + store->push_back(std::string("foo")); + store->push_back(fmt::arg("a1", "foo")); + auto moved_store = std::move(*store); + store.reset(); + EXPECT_EQ(fmt::vformat("{} {} {a1}", moved_store), "42 foo foo"); +} |