mirror of
https://github.com/GerbilSoft/zlib-ng.git
synced 2025-06-18 11:35:35 -04:00
76 lines
1.9 KiB
C++
76 lines
1.9 KiB
C++
/* test_inflate_sync.cc - Test inflateSync using full flush deflate and corrupted data */
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#include "zbuild.h"
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#ifdef ZLIB_COMPAT
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# include "zlib.h"
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#else
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# include "zlib-ng.h"
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#endif
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "test_shared.h"
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#include <gtest/gtest.h>
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TEST(inflate, sync) {
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PREFIX3(stream) c_stream, d_stream;
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uint8_t compr[128], uncompr[128];
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z_size_t compr_len = sizeof(compr), uncompr_len = sizeof(uncompr);
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int err;
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memset(&c_stream, 0, sizeof(c_stream));
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/* build compressed stream with full flush */
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err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION);
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EXPECT_EQ(err, Z_OK);
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c_stream.next_in = (z_const unsigned char *)hello;
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c_stream.next_out = compr;
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c_stream.avail_in = 3;
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c_stream.avail_out = (uint32_t)compr_len;
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err = PREFIX(deflate)(&c_stream, Z_FULL_FLUSH);
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EXPECT_EQ(err, Z_OK);
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/* force an error in first compressed block */
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compr[3]++;
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c_stream.avail_in = hello_len-3;
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err = PREFIX(deflate)(&c_stream, Z_FINISH);
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EXPECT_EQ(err, Z_STREAM_END);
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err = PREFIX(deflateEnd)(&c_stream);
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EXPECT_EQ(err, Z_OK);
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compr_len = (z_size_t)c_stream.total_out;
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memset(&d_stream, 0, sizeof(d_stream));
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/* just read the zlib header */
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d_stream.next_in = compr;
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d_stream.avail_in = 2;
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err = PREFIX(inflateInit)(&d_stream);
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EXPECT_EQ(err, Z_OK);
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d_stream.next_out = uncompr;
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d_stream.avail_out = (uint32_t)uncompr_len;
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err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH);
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EXPECT_EQ(err, Z_OK);
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/* read all compressed data, but skip damaged part */
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d_stream.avail_in = (uint32_t)compr_len-2;
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err = PREFIX(inflateSync)(&d_stream);
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EXPECT_EQ(err, Z_OK);
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err = PREFIX(inflate)(&d_stream, Z_FINISH);
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EXPECT_EQ(err, Z_STREAM_END);
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err = PREFIX(inflateEnd)(&d_stream);
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EXPECT_EQ(err, Z_OK);
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}
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