Add 'neozip/' from commit 'c2712b8a345191f6ed79558c089777df94590087'

git-subtree-dir: neozip
git-subtree-mainline: b1e34e861b5d732afe828d58aad2c638135061fd
git-subtree-split: c2712b8a345191f6ed79558c089777df94590087

1 files changed, 91 insertions, 0 deletions

diff --git a/neozip/test/test_deflate_prime.cc b/neozip/test/test_deflate_prime.cc
new file mode 100644
index 0000000000..75dcf3177a
--- /dev/null
+++ b/neozip/test/test_deflate_prime.cc
@@ -0,0 +1,91 @@
+/* test_deflate_prime.cc - Test deflatePrime() wrapping gzip around deflate stream */
+
+#include "zbuild.h"
+#ifdef ZLIB_COMPAT
+#  include "zlib.h"
+#else
+#  include "zlib-ng.h"
+#endif
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "test_shared_ng.h"
+
+#include <gtest/gtest.h>
+
+TEST(deflate, prime) {
+    PREFIX3(stream) c_stream, d_stream;
+    uint8_t compr[128], uncompr[128];
+    z_size_t compr_len = sizeof(compr), uncompr_len = sizeof(uncompr);
+    uint32_t crc = 0;
+    int err;
+
+    memset(&c_stream, 0, sizeof(c_stream));
+    memset(&d_stream, 0, sizeof(d_stream));
+
+    /* Raw deflate windowBits is -15 */
+    err = PREFIX(deflateInit2)(&c_stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -MAX_WBITS, 8, Z_DEFAULT_STRATEGY);
+    EXPECT_EQ(err, Z_OK);
+
+    /* Gzip magic number */
+    err = PREFIX(deflatePrime)(&c_stream, 16, 0x8b1f);
+    EXPECT_EQ(err, Z_OK);
+    /* Gzip compression method (deflate) */
+    err = PREFIX(deflatePrime)(&c_stream, 8, 0x08);
+    EXPECT_EQ(err, Z_OK);
+    /* Gzip flags (one byte, using two odd bit calls) */
+    err = PREFIX(deflatePrime)(&c_stream, 3, 0x0);
+    EXPECT_EQ(err, Z_OK);
+    err = PREFIX(deflatePrime)(&c_stream, 5, 0x0);
+    EXPECT_EQ(err, Z_OK);
+    /* Gzip modified time */
+    err = deflate_prime_32(&c_stream, 0x0);
+    EXPECT_EQ(err, Z_OK);
+    /* Gzip extra flags */
+    err = PREFIX(deflatePrime)(&c_stream, 8, 0x0);
+    EXPECT_EQ(err, Z_OK);
+    /* Gzip operating system */
+    err = PREFIX(deflatePrime)(&c_stream, 8, 255);
+    EXPECT_EQ(err, Z_OK);
+
+    c_stream.next_in = (z_const unsigned char *)hello;
+    c_stream.avail_in = (uint32_t)hello_len;
+    c_stream.next_out = compr;
+    c_stream.avail_out = (uint32_t)compr_len;
+
+    err = PREFIX(deflate)(&c_stream, Z_FINISH);
+    EXPECT_EQ(err, Z_STREAM_END);
+
+    /* Gzip uncompressed data crc32 */
+    crc = PREFIX(crc32)(0, (const uint8_t *)hello, (uint32_t)hello_len);
+    err = deflate_prime_32(&c_stream, crc);
+    EXPECT_EQ(err, Z_OK);
+    /* Gzip uncompressed data length */
+    err = deflate_prime_32(&c_stream, (uint32_t)hello_len);
+    EXPECT_EQ(err, Z_OK);
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    EXPECT_EQ(err, Z_OK);
+
+    d_stream.next_in  = compr;
+    d_stream.avail_in = (uint32_t)c_stream.total_out;
+    d_stream.next_out = uncompr;
+    d_stream.avail_out = (uint32_t)uncompr_len;
+    d_stream.total_in = 0;
+    d_stream.total_out = 0;
+
+    /* Inflate with gzip header */
+    err = PREFIX(inflateInit2)(&d_stream, MAX_WBITS + 32);
+    EXPECT_EQ(err, Z_OK);
+
+    err = PREFIX(inflate)(&d_stream, Z_FINISH);
+    EXPECT_EQ(err, Z_BUF_ERROR);
+
+    err = PREFIX(inflateEnd)(&d_stream);
+    EXPECT_EQ(err, Z_OK);
+
+    EXPECT_STREQ((char *)uncompr, hello);
+}