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15ebc12276
unit-json_view.cpp: type queries, size, and empty against basic_json; materialize() against parse() (json and ordered_json, generated documents, duplicate keys, 100,000 levels of nesting, parent pointers with JSON_DIAGNOSTICS); parse errors and their messages equal to parse() for malformed inputs and all option combinations; the overflow of a float document (1e39, 3.4028236e38) as in parse(); NUL and BOM; borrowed and owned inputs (strings, C strings, literals, vectors, string_view, streams, wide strings, parse_copy, and iterator ranges over pointers, vectors, strings, and lists); reuse with read(); moves; shrink_to_fit() of the index and of the decoded strings; source offsets. unit-json_view_macros.cpp includes the header without JSON_TEST_KEEP_MACROS, as users do: the view must not depend on the macros json.hpp undefines, and must not leak its own. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
48 lines
2.0 KiB
C++
48 lines
2.0 KiB
C++
// __ _____ _____ _____
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// __| | __| | | | JSON for Modern C++ (supporting code)
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// | | |__ | | | | | | version 3.12.0
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// |_____|_____|_____|_|___| https://github.com/nlohmann/json
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//
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// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
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// SPDX-License-Identifier: MIT
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#include "doctest_compatibility.h"
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// All other tests keep the library's macros (JSON_TEST_KEEP_MACROS). This one
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// includes json_view.hpp as users do, so that json.hpp undefines its macros
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// (JSON_HAS_CPP_17, JSON_STRICT_NUL_HANDLING, ...) before the view is compiled.
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#undef JSON_TEST_KEEP_MACROS
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#include <nlohmann/json_view.hpp>
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#include <string>
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#include <type_traits>
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#if (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
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#include <string_view>
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#define JSON_VIEW_TEST_HAS_STRING_VIEW 1
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#else
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#define JSON_VIEW_TEST_HAS_STRING_VIEW 0
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#endif
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// the view's own macros do not leak
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#if defined(NLOHMANN_VIEW_LIKELY) || defined(NLOHMANN_VIEW_UNLIKELY) || defined(NLOHMANN_VIEW_ALWAYS_INLINE) || defined(NLOHMANN_VIEW_NOINLINE) \
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|| defined(NLOHMANN_VIEW_NODISCARD) || defined(NLOHMANN_VIEW_THROW) || defined(NLOHMANN_VIEW_HAS_CPP_17) || defined(NLOHMANN_VIEW_LITTLE_ENDIAN) \
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|| defined(NLOHMANN_VIEW_REPEAT16)
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#error "json_view.hpp leaks a macro"
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#endif
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TEST_CASE("json_view without the library's macros")
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{
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// (this file also gets C++17 builds: it mentions JSON_HAS_CPP_17)
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#if JSON_VIEW_TEST_HAS_STRING_VIEW
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CHECK(std::is_same<nlohmann::json_view::string_view_t, std::string_view>::value);
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#endif
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const std::string text = "[1, 2.5, \"x\"]";
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const nlohmann::json_document d = nlohmann::json_document::parse(text);
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CHECK(d.root().size() == 3);
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CHECK(d.root().materialize() == nlohmann::json::parse(text));
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// the NUL handling of the library's configuration
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const std::string with_nul("[1]\0x", 5);
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CHECK(nlohmann::json_document::accept(with_nul) == nlohmann::json::accept(with_nul));
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}
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