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#include <test.hpp>
TEST_CASE("read float 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 float will
// not be aligned properly. So we test that even in that case the float
// 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("float/data-zero"));
protozero::pbf_reader item{abuffer.data() + n, abuffer.size() - n};
REQUIRE(item.next());
REQUIRE(double(item.get_float()) == Approx(0.0));
REQUIRE_FALSE(item.next());
}
SECTION("positive") {
abuffer.append(load_data("float/data-pos"));
protozero::pbf_reader item{abuffer.data() + n, abuffer.size() - n};
REQUIRE(item.next());
REQUIRE(double(item.get_float()) == Approx(5.34));
REQUIRE_FALSE(item.next());
}
SECTION("negative") {
abuffer.append(load_data("float/data-neg"));
protozero::pbf_reader item{abuffer.data() + n, abuffer.size() - n};
REQUIRE(item.next());
REQUIRE(double(item.get_float()) == Approx(-1.71));
REQUIRE_FALSE(item.next());
}
SECTION("end_of_buffer") {
abuffer.append(load_data("float/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_float(), protozero::end_of_buffer_exception);
}
}
}
}
TEST_CASE("write float field") {
std::string buffer;
protozero::pbf_writer pw{buffer};
SECTION("zero") {
pw.add_float(1, 0.0F);
REQUIRE(buffer == load_data("float/data-zero"));
}
SECTION("positive") {
pw.add_float(1, 5.34F);
REQUIRE(buffer == load_data("float/data-pos"));
}
SECTION("negative") {
pw.add_float(1, -1.71F);
REQUIRE(buffer == load_data("float/data-neg"));
}
}
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