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Add gwbuf_compare

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With gwbuf_compare the content of two GWBUFs can be compared.
This commit is contained in:
Johan Wikman
2016-12-19 14:22:34 +02:00
parent 3a3632e75e
commit b62db91ab3
3 changed files with 209 additions and 0 deletions
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73
server/core/test/testbuffer.c
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@ -316,6 +316,78 @@ void test_consume()
consume_buffer(n_buffers - 1, -1);
}
void test_compare()
{
static const uint8_t data[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
ss_dfprintf(stderr, "testbuffer : testing GWBUF comparisons\n");
GWBUF* lhs = NULL;
GWBUF* rhs = NULL;
// Both NULL
ss_dassert(gwbuf_compare(lhs, rhs) == 0);
// Either (but not both) NULL
lhs = gwbuf_alloc_and_load(10, data);
ss_dassert(gwbuf_compare(lhs, rhs) > 0);
ss_dassert(gwbuf_compare(rhs, lhs) < 0);
// The same array
ss_dassert(gwbuf_compare(lhs, lhs) == 0);
// Identical array
gwbuf_free(rhs);
rhs = gwbuf_alloc_and_load(10, data);
ss_dassert(gwbuf_compare(lhs, rhs) == 0);
// One shorter
gwbuf_free(rhs);
rhs = gwbuf_alloc_and_load(9, data + 1);
ss_dassert(gwbuf_compare(lhs, rhs) > 0);
ss_dassert(gwbuf_compare(rhs, lhs) < 0);
// One segmented, but otherwise identical.
gwbuf_free(rhs);
rhs = NULL;
rhs = gwbuf_append(rhs, gwbuf_alloc_and_load(3, data));
rhs = gwbuf_append(rhs, gwbuf_alloc_and_load(3, data + 3));
rhs = gwbuf_append(rhs, gwbuf_alloc_and_load(4, data + 3 + 3));
ss_dassert(gwbuf_compare(lhs, rhs) == 0);
ss_dassert(gwbuf_compare(rhs, rhs) == 0);
// Both segmented, but otherwise identical.
gwbuf_free(lhs);
lhs = NULL;
lhs = gwbuf_append(lhs, gwbuf_alloc_and_load(5, data));
lhs = gwbuf_append(lhs, gwbuf_alloc_and_load(5, data + 5));
ss_dassert(gwbuf_compare(lhs, rhs) == 0);
ss_dassert(gwbuf_compare(rhs, lhs) == 0);
// Both segmented and of same length, but different.
gwbuf_free(lhs);
lhs = NULL;
lhs = gwbuf_append(lhs, gwbuf_alloc_and_load(5, data + 5)); // Values in different order
lhs = gwbuf_append(lhs, gwbuf_alloc_and_load(5, data));
ss_dassert(gwbuf_compare(lhs, rhs) > 0); // 5 > 1
ss_dassert(gwbuf_compare(rhs, lhs) < 0); // 5 > 1
// Identical, but one containing empty segments.
gwbuf_free(rhs);
rhs = NULL;
rhs = gwbuf_append(rhs, gwbuf_alloc_and_load(0, data));
rhs = gwbuf_append(rhs, gwbuf_alloc_and_load(5, data + 5));
rhs = gwbuf_append(rhs, gwbuf_alloc_and_load(0, data));
rhs = gwbuf_append(rhs, gwbuf_alloc_and_load(5, data));
rhs = gwbuf_append(rhs, gwbuf_alloc_and_load(0, data));
ss_dassert(gwbuf_compare(lhs, rhs) == 0);
ss_dassert(gwbuf_compare(rhs, lhs) == 0);
}
/**
* test1 Allocate a buffer and do lots of things
*
@ -433,6 +505,7 @@ test1()
test_split();
test_load_and_copy();
test_consume();
test_compare();
return 0;
}