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#include <test.hpp>
#include <array>
TEST_CASE("read repeated packed 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 doubles will
// not be aligned properly. So we test that even in that case the doubles
// 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("empty") {
abuffer.append(load_data("repeated_packed_double/data-empty"));
protozero::pbf_reader item{abuffer.data() + n, abuffer.size() - n};
REQUIRE_FALSE(item.next());
}
SECTION("one") {
abuffer.append(load_data("repeated_packed_double/data-one"));
protozero::pbf_reader item{abuffer.data() + n, abuffer.size() - n};
REQUIRE(item.next());
const auto it_range = item.get_packed_double();
REQUIRE_FALSE(item.next());
REQUIRE(*it_range.begin() == Approx(17.34));
REQUIRE(std::next(it_range.begin()) == it_range.end());
}
SECTION("many") {
abuffer.append(load_data("repeated_packed_double/data-many"));
protozero::pbf_reader item{abuffer.data() + n, abuffer.size() - n};
REQUIRE(item.next());
const auto it_range = item.get_packed_double();
REQUIRE_FALSE(item.next());
auto it = it_range.begin();
REQUIRE(*it++ == Approx(17.34));
REQUIRE(*it++ == Approx( 0.0));
REQUIRE(*it++ == Approx( 1.0));
REQUIRE(*it++ == std::numeric_limits<double>::min());
REQUIRE(*it++ == std::numeric_limits<double>::max());
REQUIRE(it == it_range.end());
it = it_range.begin();
auto it2 = it + 1;
REQUIRE(it2 > it);
REQUIRE(it < it2);
REQUIRE(it <= it_range.begin());
REQUIRE(it >= it_range.begin());
REQUIRE(*it2 == Approx(0.0));
auto it3 = 1 + it;
REQUIRE(*it3 == Approx(0.0));
auto it4 = it2 - 1;
REQUIRE(*it4 == Approx(17.34));
it4 += 2;
REQUIRE(*it4 == Approx(1.0));
it4 -= 2;
REQUIRE(*it4 == Approx(17.34));
it4 += 2;
REQUIRE(*it4 == Approx(1.0));
REQUIRE(*it4-- == Approx(1.0));
REQUIRE(*it4 == Approx(0.0));
REQUIRE(*--it4 == Approx(17.34));
REQUIRE(it4[0] == Approx(17.34));
REQUIRE(it4[1] == Approx(0.0));
REQUIRE(std::distance(it_range.begin(), it_range.end()) == 5);
REQUIRE(it_range.end() - it_range.begin() == 5);
REQUIRE(it_range.begin() - it_range.end() == -5);
}
SECTION("end_of_buffer") {
abuffer.append(load_data("repeated_packed_double/data-many"));
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_packed_double(), protozero::end_of_buffer_exception);
}
}
}
}
TEST_CASE("write repeated packed double field") {
std::string buffer;
protozero::pbf_writer pw{buffer};
SECTION("empty") {
const std::array<double, 1> data = {{ 17.34 }};
pw.add_packed_double(1, std::begin(data), std::begin(data) /* !!!! */);
REQUIRE(buffer == load_data("repeated_packed_double/data-empty"));
}
SECTION("one") {
const std::array<double, 1> data = {{ 17.34 }};
pw.add_packed_double(1, std::begin(data), std::end(data));
REQUIRE(buffer == load_data("repeated_packed_double/data-one"));
}
SECTION("many") {
const std::array<double, 5> data = {{ 17.34, 0.0, 1.0,
std::numeric_limits<double>::min(),
std::numeric_limits<double>::max() }};
pw.add_packed_double(1, std::begin(data), std::end(data));
REQUIRE(buffer == load_data("repeated_packed_double/data-many"));
}
}
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