/srv/osrm/osrm-backend/third_party/protozero/test/t/double
Edit: /srv/osrm/osrm-backend/third_party/protozero/test/t/double/reader_test_cases.cpp (2339B)
#include
TEST_CASE("read double field") {
// Run these tests twice, the second time we basically move the data
// one byte down in the buffer. It doesn't matter how the data or buffer
// is aligned before that, in at least one of these cases the double will
// not be aligned properly. So we test that even in that case the double
// will be extracted properly.
for (std::string::size_type n = 0; n < 2; ++n) {
std::string abuffer;
abuffer.reserve(1000);
abuffer.append(n, '\0');
SECTION("zero") {
abuffer.append(load_data("double/data-zero"));
protozero::pbf_reader item{abuffer.data() + n, abuffer.size() - n};
REQUIRE(item.next());
REQUIRE(item.get_double() == Approx(0.0));
REQUIRE_FALSE(item.next());
}
SECTION("positive") {
abuffer.append(load_data("double/data-pos"));
protozero::pbf_reader item{abuffer.data() + n, abuffer.size() - n};
REQUIRE(item.next());
REQUIRE(item.get_double() == Approx(4.893));
REQUIRE_FALSE(item.next());
}
SECTION("negative") {
abuffer.append(load_data("double/data-neg"));
protozero::pbf_reader item{abuffer.data() + n, abuffer.size() - n};
REQUIRE(item.next());
REQUIRE(item.get_double() == Approx(-9232.33));
REQUIRE_FALSE(item.next());
}
SECTION("end_of_buffer") {
abuffer.append(load_data("double/data-neg"));
for (std::string::size_type i = 1; i < abuffer.size() - n; ++i) {
protozero::pbf_reader item{abuffer.data() + n, i};
REQUIRE(item.next());
REQUIRE_THROWS_AS(item.get_double(), protozero::end_of_buffer_exception);
}
}
}
}
TEST_CASE("write double field") {
std::string buffer;
protozero::pbf_writer pw{buffer};
SECTION("zero") {
pw.add_double(1, 0.0);
REQUIRE(buffer == load_data("double/data-zero"));
}
SECTION("positive") {
pw.add_double(1, 4.893);
REQUIRE(buffer == load_data("double/data-pos"));
}
SECTION("negative") {
pw.add_double(1, -9232.33);
REQUIRE(buffer == load_data("double/data-neg"));
}
}