mirror of https://github.com/catchorg/Catch2.git
117 lines
4.3 KiB
C++
117 lines
4.3 KiB
C++
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// Copyright Catch2 Authors
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.txt or copy at
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// https://www.boost.org/LICENSE_1_0.txt)
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// SPDX-License-Identifier: BSL-1.0
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#include <catch2/catch_test_macros.hpp>
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#include <catch2/internal/catch_jsonwriter.hpp>
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#include <catch2/matchers/catch_matchers_string.hpp>
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#include <sstream>
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namespace {
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struct Custom {};
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std::ostream& operator<<( std::ostream& os, Custom const& ) {
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return os << "custom";
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}
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} // namespace
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TEST_CASE( "JsonWriter", "[JSON][JsonWriter]" ) {
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std::stringstream stream{};
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SECTION( "Newly constructed JsonWriter does nothing" ) {
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Catch::JsonValueWriter writer{ stream };
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REQUIRE( stream.str() == "" );
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}
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SECTION( "Calling writeObject will create an empty pair of braces" ) {
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{ auto writer = Catch::JsonValueWriter{ stream }.writeObject(); }
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REQUIRE( stream.str() == "{\n}" );
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}
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SECTION( "Calling writeObject with key will create an object to write the "
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"value" ) {
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using Catch::Matchers::ContainsSubstring;
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{
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auto writer = Catch::JsonValueWriter{ stream }.writeObject();
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writer.write( "int" ).write( 1 );
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writer.write( "double" ).write( 1.5 );
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writer.write( "true" ).write( true );
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writer.write( "false" ).write( false );
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writer.write( "string" ).write( "this is a string" );
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writer.write( "array" ).writeArray().write( 1 ).write( 2 );
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}
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REQUIRE_THAT(
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stream.str(),
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ContainsSubstring( "\"int\": 1," ) &&
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ContainsSubstring( "\"double\": 1.5," ) &&
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ContainsSubstring( "\"true\": true," ) &&
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ContainsSubstring( "\"false\": false," ) &&
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ContainsSubstring( "\"string\": \"this is a string\"," ) &&
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ContainsSubstring( "\"array\": [\n 1,\n 2\n ]\n}" ) );
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}
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SECTION( "nesting objects" ) {
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using Catch::Matchers::ContainsSubstring;
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{
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auto writer = Catch::JsonValueWriter{ stream }.writeObject();
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writer.write( "empty_object" ).writeObject();
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writer.write( "fully_object" )
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.writeObject()
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.write( "key" )
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.write( 1 );
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}
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REQUIRE_THAT( stream.str(),
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ContainsSubstring( "\"empty_object\": {\n }," ) &&
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ContainsSubstring(
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"\"fully_object\": {\n \"key\": 1\n }" ) );
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}
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SECTION( "Calling writeArray will create an empty pair of braces" ) {
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{ auto writer = Catch::JsonValueWriter{ stream }.writeArray(); }
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REQUIRE( stream.str() == "[\n]" );
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}
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SECTION( "Calling writeArray creates array to write the values to" ) {
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{
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auto writer = Catch::JsonValueWriter{ stream }.writeArray();
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writer.write( 1 );
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writer.write( 1.5 );
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writer.write( true );
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writer.write( false );
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writer.write( "this is a string" );
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writer.writeObject().write( "object" ).write( 42 );
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writer.writeArray().write( "array" ).write( 42.5 );
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}
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REQUIRE( stream.str() == "[\n 1,\n 1.5,\n true,\n false,\n \"this is a string\",\n {\n \"object\": 42\n },\n [\n \"array\",\n 42.5\n ]\n]" );
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}
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SECTION(
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"Moved from JsonObjectWriter shall not insert superfluous brace" ) {
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{
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auto writer = Catch::JsonObjectWriter{ stream };
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auto another_writer = std::move( writer );
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}
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REQUIRE( stream.str() == "{\n}" );
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}
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SECTION(
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"Moved from JsonArrayWriter shall not insert superfluous bracket" ) {
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{
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auto writer = Catch::JsonArrayWriter{ stream };
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auto another_writer = std::move( writer );
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}
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REQUIRE( stream.str() == "[\n]" );
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}
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SECTION( "Custom class shall be quoted" ) {
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Catch::JsonValueWriter{ stream }.write( Custom{} );
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REQUIRE( stream.str() == "\"custom\"" );
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}
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SECTION( "String with a quote shall be espaced" ) {
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Catch::JsonValueWriter{ stream }.write( "\"" );
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REQUIRE( stream.str() == "\"\\\"\"" );
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}
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}
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