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72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
/* test_deflate_header.cc - Test deflateSetHeader() with small buffers */
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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 <gtest/gtest.h>
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#include "test_shared.h"
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TEST(deflate, header) {
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PREFIX3(stream) c_stream;
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PREFIX(gz_header) *head;
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uint8_t compr[128];
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z_size_t compr_len = sizeof(compr);
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int err;
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head = (PREFIX(gz_header) *)calloc(1, sizeof(PREFIX(gz_header)));
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ASSERT_TRUE(head != NULL);
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memset(&c_stream, 0, sizeof(c_stream));
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/* gzip */
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err = PREFIX(deflateInit2)(&c_stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, MAX_WBITS + 16, 8, Z_DEFAULT_STRATEGY);
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EXPECT_EQ(err, Z_OK);
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head->text = 1;
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head->comment = (uint8_t *)"comment";
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head->name = (uint8_t *)"name";
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head->hcrc = 1;
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head->extra = (uint8_t *)"extra";
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head->extra_len = (uint32_t)strlen((const char *)head->extra);
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err = PREFIX(deflateSetHeader)(&c_stream, head);
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EXPECT_EQ(err, Z_OK);
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PREFIX(deflateBound)(&c_stream, (unsigned long)compr_len);
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c_stream.next_in = (unsigned char *)hello;
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c_stream.next_out = compr;
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while (c_stream.total_in != hello_len && c_stream.total_out < compr_len) {
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c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
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err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
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EXPECT_EQ(err, Z_OK);
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}
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/* Finish the stream, still forcing small buffers: */
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for (;;) {
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c_stream.avail_out = 1;
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err = PREFIX(deflate)(&c_stream, Z_FINISH);
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if (err == Z_STREAM_END) break;
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EXPECT_EQ(err, Z_OK);
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}
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/* Check CRC32. */
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EXPECT_EQ(c_stream.adler, 0xb56c3f9dU);
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err = PREFIX(deflateEnd)(&c_stream);
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EXPECT_EQ(err, Z_OK);
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free(head);
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}
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