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xo-arena: + DAreanVector.reserve utest

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Roland Conybeare 2026-01-06 17:02:23 -05:00
commit 20da7d0176
1 changed files with 35 additions and 0 deletions
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35
xo-arena/utest/DArenaVector.test.cpp
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@ -298,6 +298,41 @@ namespace xo {
REQUIRE(vec[1] == 4.0);
REQUIRE(vec[2] == 6.0);
}
TEST_CASE("DArenaVector-reserve", "[arena][DArenaVector]")
{
ArenaConfig cfg { .name_ = "testarena",
.size_ = 4096 };
DArenaVector<double> vec = DArenaVector<double>::map(cfg);
REQUIRE(vec.size() == 0);
REQUIRE(vec.capacity() > 0);
size_t initial_capacity = vec.capacity();
// reserve doesn't change size
vec.reserve(100);
REQUIRE(vec.size() == 0);
REQUIRE(vec.capacity() >= 100);
// add some elements
vec.push_back(1.0);
vec.push_back(2.0);
vec.push_back(3.0);
REQUIRE(vec.size() == 3);
size_t cap_after_push = vec.capacity();
// reserve more space
vec.reserve(200);
REQUIRE(vec.size() == 3);
REQUIRE(vec.capacity() >= 200);
// values still intact
REQUIRE(vec[0] == 1.0);
REQUIRE(vec[1] == 2.0);
REQUIRE(vec[2] == 3.0);
}
}
}