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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#include "precompiled.hpp"
#include "nmt/nmtNativeCallStackStorage.hpp"
#include "runtime/os.hpp"
#include "unittest.hpp"

using NCSS = NativeCallStackStorage;

class NMTNativeCallStackStorageTest : public testing::Test {};

TEST_VM_F(NMTNativeCallStackStorageTest, DoNotStoreStackIfNotDetailed) {
  NativeCallStack ncs{};
  NCSS ncss(false);
  NCSS::StackIndex si = ncss.push(ncs);
  EXPECT_TRUE(NCSS::is_invalid(si));
  NativeCallStack ncs_received = ncss.get(si);
  EXPECT_TRUE(ncs_received.is_empty());
}

TEST_VM_F(NMTNativeCallStackStorageTest, CollisionsReceiveDifferentIndexes) {
  constexpr const int nr_of_stacks = 10;
  NativeCallStack ncs_arr[nr_of_stacks];
  for (int i = 0; i < nr_of_stacks; i++) {
    ncs_arr[i] = NativeCallStack((address*)(&i), 1);
  }

  NCSS ncss(true, 1);
  NCSS::StackIndex si_arr[nr_of_stacks];
  for (int i = 0; i < nr_of_stacks; i++) {
    si_arr[i] = ncss.push(ncs_arr[i]);
  }

  // Every SI should be different as every sack is different
  for (int i = 0; i < nr_of_stacks; i++) {
    for (int j = 0; j < nr_of_stacks; j++) {
      if (i == j) continue;
      EXPECT_FALSE(NCSS::equals(si_arr[i],si_arr[j]));
    }
  }
}