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Add some test cases about to_cbor()

pull/2044/head
chenguoping 2020-05-13 20:30:49 +08:00
parent 44fe284f9d
commit 47c6570470
1 changed files with 33 additions and 1 deletions
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34
test/src/unit-cbor.cpp
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@ -130,6 +130,24 @@ TEST_CASE("CBOR")
CHECK(result.empty());
}
SECTION("NaN")
{
// NaN value
json j = std::numeric_limits<json::number_float_t>::quiet_NaN();
std::vector<uint8_t> expected = {0xf9, 0x7e, 0x00};
const auto result = json::to_cbor(j);
CHECK(result == expected);
}
SECTION("Infinity")
{
// Infinity value
json j = std::numeric_limits<json::number_float_t>::infinity();
std::vector<uint8_t> expected = {0xf9, 0x7c, 0x00};
const auto result = json::to_cbor(j);
CHECK(result == expected);
}
SECTION("null")
{
json j = nullptr;
@ -835,6 +853,20 @@ TEST_CASE("CBOR")
CHECK(json::from_cbor(result, true, false) == j);
}
SECTION("0.5")
{
double v = 0.5;
json j = v;
// its double-precision float binary value is
// {0xfb, 0x3f, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
// but to save memory, we can store it as single-precision float.
std::vector<uint8_t> expected = {0xfa, 0x3f, 0x00, 0x00, 0x00};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
CHECK(json::from_cbor(result) == v);
}
}
SECTION("half-precision float (edge cases)")
@ -936,7 +968,7 @@ TEST_CASE("CBOR")
SECTION("NaN")
{
json j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x7c, 0x01}));
json j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x7e, 0x00}));
json::number_float_t d = j;
CHECK(std::isnan(d));
CHECK(j.dump() == "null");