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✨ added return value for emplace (#349)

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Niels Lohmann
2016-11-28 18:33:46 +01:00
parent 6ecff31b7f
commit aeb4f87a27
6 changed files with 82 additions and 20 deletions
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37
test/src/unit-modifiers.cpp
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@ -302,18 +302,47 @@ TEST_CASE("modifiers")
{
SECTION("null")
{
// start with a null value
json j;
j.emplace("foo", "bar");
j.emplace("baz", "bam");
// add a new key
auto res1 = j.emplace("foo", "bar");
CHECK(res1.second == true);
CHECK(*res1.first == "bar");
// the null value is changed to an object
CHECK(j.type() == json::value_t::object);
// add a new key
auto res2 = j.emplace("baz", "bam");
CHECK(res2.second == true);
CHECK(*res2.first == "bam");
// we try to insert at given key - no change
auto res3 = j.emplace("baz", "bad");
CHECK(res3.second == false);
CHECK(*res3.first == "bam");
// the final object
CHECK(j == json({{"baz", "bam"}, {"foo", "bar"}}));
}
SECTION("object")
{
// start with an object
json j = {{"foo", "bar"}};
j.emplace("baz", "bam");
CHECK(j.type() == json::value_t::object);
// add a new key
auto res1 = j.emplace("baz", "bam");
CHECK(res1.second == true);
CHECK(*res1.first == "bam");
// add an existing key
auto res2 = j.emplace("foo", "bad");
CHECK(res2.second == false);
CHECK(*res2.first == "bar");
// check final object
CHECK(j == json({{"baz", "bam"}, {"foo", "bar"}}));
}
}