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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <gtest/gtest.h>
#include <gmock/gmock.h>
extern "C"
{
#include <hicn/interest_manifest.h>
}
static constexpr hicn_uword WORD_SIZE = WORD_WIDTH;
class InterestManifestTest : public ::testing::Test
{
protected:
static constexpr u32 n_suffixes = 0x00000014 + 1;
static constexpr u32 padding = 0x21232425;
static constexpr hicn_uword bitmap_word = ~0ULL;
static inline std::vector<uint32_t> values = { 10, 22, 23, 43, 54, 65, 66,
4, 33, 2, 44, 99, 87, 67,
78, 98, 76, 1, 7, 123 };
InterestManifestTest () {}
virtual ~InterestManifestTest () {}
uint8_t buffer[512];
hicn_uword bitmap_saved[BITMAP_SIZE];
};
TEST_F (InterestManifestTest, OneWordBitmapUpdate)
{
hicn_uword initial_bitmap[1];
hicn_uword curr_bitmap[1] = { 0 };
initial_bitmap[0] =
0x0000000000000b07; // ...000000000000000000000101100000111
// Consume first 4 'one' bits (i.e. suffixes), reaching position 9
size_t pos = 0, max_suffixes = 4;
pos = interest_manifest_update_bitmap (initial_bitmap, curr_bitmap, pos,
WORD_SIZE, max_suffixes);
EXPECT_EQ (pos, std::size_t (9));
EXPECT_EQ (curr_bitmap[0], hicn_uword (0x0000000000000107));
// Consume the remaining 2 'one' bits, reaching end of bitmap
hicn_uword curr_bitmap2[1] = { 0 };
pos = interest_manifest_update_bitmap (initial_bitmap, curr_bitmap2, pos,
WORD_SIZE, max_suffixes);
EXPECT_EQ (pos, WORD_SIZE);
EXPECT_EQ (curr_bitmap2[0], hicn_uword (0x00000a00));
// Consume all suffixes at once
hicn_uword curr_bitmap3[1] = { 0 };
max_suffixes = 16;
pos = interest_manifest_update_bitmap (initial_bitmap, curr_bitmap3, 0,
WORD_SIZE, max_suffixes);
EXPECT_EQ (pos, WORD_SIZE);
EXPECT_EQ (curr_bitmap3[0], initial_bitmap[0]);
}
TEST_F (InterestManifestTest, TwoWordBitmapUpdate)
{
hicn_uword initial_bitmap[2];
initial_bitmap[0] = 0x0000000000000b07;
initial_bitmap[1] = 0x0000000000000b07;
// -> 0000000000000000000010110000011100000000000000000000101100000111
int expected_pos[] = { WORD_SIZE + 2, 2 * WORD_SIZE };
u32 expected_bitmap[][2] = { { 0x00000b07, 0x00000003 },
{ 0x0, 0x00000b04 } };
// Loop to consume all suffixes
int pos = 0, max_suffixes = 8, i = 0, len = WORD_SIZE * 2;
while (pos != len)
{
hicn_uword curr_bitmap[2] = { 0 };
pos = interest_manifest_update_bitmap (initial_bitmap, curr_bitmap, pos,
len, max_suffixes);
EXPECT_EQ (pos, expected_pos[i]);
EXPECT_EQ (curr_bitmap[0], expected_bitmap[i][0]);
EXPECT_EQ (curr_bitmap[1], expected_bitmap[i][1]);
i++;
}
}
TEST_F (InterestManifestTest, SerializeDeserialize)
{
#if hicn_uword_bits == 64
#define F(x) hicn_host_to_net_64 (x)
#elif hicn_uword_bits == 32
#define F(x) hicn_host_to_net_32 (x)
#else
#error "Unrecognized architecture"
#endif
auto header = reinterpret_cast<interest_manifest_header_t *> (buffer);
interest_manifest_init (header, 0);
for (const auto &v : values)
{
interest_manifest_add_suffix (header, v);
}
EXPECT_EQ (header->n_suffixes, n_suffixes);
// Save bitmap
memcpy (bitmap_saved, header->request_bitmap, sizeof (bitmap_saved));
// Serialize manifest
interest_manifest_serialize (header);
// If architecture is little endian, bytes should be now swapped
EXPECT_THAT (header->n_suffixes, ::testing::Eq (hicn_host_to_net_32 (
n_suffixes) /* 0x14000000 */));
for (unsigned i = 0; i < BITMAP_SIZE; i++)
{
EXPECT_THAT (header->request_bitmap[i],
::testing::Eq (F (bitmap_saved[i])));
}
hicn_name_suffix_t *suffix = (hicn_name_suffix_t *) (header + 1);
for (unsigned i = 0; i < n_suffixes; i++)
{
if (i == 0)
{
EXPECT_THAT (*(suffix + i), ::testing::Eq (hicn_name_suffix_t (0)));
}
else
{
EXPECT_THAT (*(suffix + i),
::testing::Eq (hicn_host_to_net_32 (values[i - 1])));
}
}
// Deserialize manifest
interest_manifest_deserialize (header);
// Bytes should now be as before
EXPECT_THAT (header->n_suffixes, ::testing::Eq (n_suffixes));
int i = 0;
unsigned long pos;
interest_manifest_foreach_suffix (header, suffix, pos)
{
if (pos == 0)
{
EXPECT_THAT (*suffix, ::testing::Eq (hicn_name_suffix_t (0)));
}
else
{
EXPECT_THAT (*suffix, ::testing::Eq (values[i]));
i++;
}
}
}
TEST_F (InterestManifestTest, ForEach)
{
unsigned long pos;
hicn_name_suffix_t *suffix = nullptr;
auto header = reinterpret_cast<interest_manifest_header_t *> (buffer);
interest_manifest_init (header, 0);
for (const auto &v : values)
{
interest_manifest_add_suffix (header, v);
}
// Iterate over interest manifest. bBbitmap should be all 1, we should be
// able to iterate over all suffixes.
interest_manifest_foreach_suffix (header, suffix, pos)
{
if (pos == 0)
{
EXPECT_EQ (*suffix, hicn_name_suffix_t (0));
}
else
{
EXPECT_EQ (*suffix, values[pos - 1]);
}
}
std::set<uint32_t> set_values (values.begin (), values.end ());
// Unset few bitmap positions
interest_manifest_del_suffix (header, 5 + 1);
set_values.erase (values[5]);
interest_manifest_del_suffix (header, 6 + 1);
set_values.erase (values[6]);
interest_manifest_del_suffix (header, 12 + 1);
set_values.erase (values[12]);
interest_manifest_del_suffix (header, 17 + 1);
set_values.erase (values[17]);
// Iterate over interest manifest and remove elements in manifest from set.
// The set should be empty at the end.
interest_manifest_foreach_suffix (header, suffix, pos)
{
if (pos > 0)
{
EXPECT_TRUE (set_values.find (*suffix) != set_values.end ())
<< "The value was " << *suffix;
set_values.erase (*suffix);
}
}
EXPECT_TRUE (set_values.empty ());
}
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