libcruft-util/test/array/sarray.cpp

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#include "tap.hpp"
#include "array/sarray.hpp"
#include "debug/assert.hpp"
#include <vector>
///////////////////////////////////////////////////////////////////////////////
// A simple wrapper over an integer that increments at construction time, and
// decrements at destruction time. Used to check for obvious leakages in
// sarray lifetimes.
struct counter {
explicit counter (int &_var):
var (_var)
{ ++var; }
counter (const counter &rhs):
counter (rhs.var)
{ ; }
counter& operator= (const counter &rhs)
{
var = rhs.var;
return *this;
}
~counter ()
{ --var; }
int &var;
};
///////////////////////////////////////////////////////////////////////////////
int
main (int, char**)
{
cruft::TAP::logger tap;
int count = 0;
std::vector<counter> objects;
std::generate_n (std::back_inserter (objects), 3, [&count] () { return counter (count); });
CHECK_GT (objects.size (), 0u);
{
cruft::sarray<8,counter> array (objects);
tap.expect_eq (
count,
static_cast<int> (objects.size () + array.size ()),
"array constructors executed"
);
tap.expect_eq (
objects.size (),
array.size (),
"array construction preserves size"
);
}
tap.expect_eq (
static_cast<int> (objects.size ()),
count,
"array destructors executed"
);
tap.expect_throw<std::length_error> ([] () {
float data[] = { 0.f, 1.f, 2.f };
cruft::sarray<2, float> value { data };
}, "oversized array initializer throws std::length_error");
return tap.status ();
}