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✅ improved test coverage

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This commit is contained in:
Niels Lohmann 2017-09-10 22:38:04 +02:00
parent 7410763731
commit e2e0ecd867
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1 changed files with 92 additions and 0 deletions
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92
test/src/unit-deserialization.cpp
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@ -31,6 +31,7 @@ SOFTWARE.
#include "json.hpp"
using nlohmann::json;
#include <iostream>
#include <valarray>
TEST_CASE("deserialization")
@ -443,4 +444,95 @@ TEST_CASE("deserialization")
}
}
}
SECTION("ignoring byte-order marks")
{
std::string bom = "\xEF\xBB\xBF";
SECTION("BOM only")
{
CHECK_THROWS_AS(json::parse(bom), json::parse_error);
CHECK_THROWS_WITH(json::parse(bom),
"[json.exception.parse_error.101] parse error at 1: syntax error - unexpected end of input; expected '[', '{', or a literal");
CHECK_THROWS_AS(json::parse(std::istringstream(bom)), json::parse_error);
CHECK_THROWS_WITH(json::parse(std::istringstream(bom)),
"[json.exception.parse_error.101] parse error at 1: syntax error - unexpected end of input; expected '[', '{', or a literal");
}
SECTION("BOM and content")
{
CHECK(json::parse(bom + "1") == 1);
CHECK(json::parse(std::istringstream(bom + "1")) == 1);
}
SECTION("2 byte of BOM")
{
CHECK_THROWS_AS(json::parse(bom.substr(0, 2)), json::parse_error);
CHECK_THROWS_WITH(json::parse(bom),
"[json.exception.parse_error.101] parse error at 1: syntax error - unexpected end of input; expected '[', '{', or a literal");
CHECK_THROWS_AS(json::parse(std::istringstream(bom.substr(0, 2))), json::parse_error);
CHECK_THROWS_WITH(json::parse(std::istringstream(bom)),
"[json.exception.parse_error.101] parse error at 1: syntax error - unexpected end of input; expected '[', '{', or a literal");
}
SECTION("1 byte of BOM")
{
CHECK_THROWS_AS(json::parse(bom.substr(0, 1)), json::parse_error);
CHECK_THROWS_WITH(json::parse(bom),
"[json.exception.parse_error.101] parse error at 1: syntax error - unexpected end of input; expected '[', '{', or a literal");
CHECK_THROWS_AS(json::parse(std::istringstream(bom.substr(0, 1))), json::parse_error);
CHECK_THROWS_WITH(json::parse(std::istringstream(bom)),
"[json.exception.parse_error.101] parse error at 1: syntax error - unexpected end of input; expected '[', '{', or a literal");
}
SECTION("variations")
{
// calculate variations of each byte of the BOM to make sure
// that the BOM and only the BOM is skipped
for (int i0 = -1; i0 < 2; ++i0)
{
for (int i1 = -1; i1 < 2; ++i1)
{
for (int i2 = -1; i2 < 2; ++i2)
{
// debug output for the variations
CAPTURE(i0);
CAPTURE(i1);
CAPTURE(i2);
std::string s = "";
s.push_back(bom[0] + i0);
s.push_back(bom[1] + i1);
s.push_back(bom[2] + i2);
if (i0 == 0 and i1 == 0 and i2 == 0)
{
// without any variation, we skip the BOM
CHECK(json::parse(s + "null") == json());
CHECK(json::parse(std::istringstream(s + "null")) == json());
}
else
{
// any variation is an error
CHECK_THROWS_AS(json::parse(s + "null"), json::parse_error);
CHECK_THROWS_AS(json::parse(std::istringstream(s + "null")), json::parse_error);
}
}
}
}
}
SECTION("preserve state after parsing")
{
std::istringstream s(bom + "123 456");
json j;
j << s;
CHECK(j == 123);
j << s;
CHECK(j == 456);
}
}
}