1 files changed, 71 insertions, 0 deletions
diff --git a/neozip/test/test_deflate_header.cc b/neozip/test/test_deflate_header.cc
new file mode 100644
index 0000000000..0d1b7d0443
--- /dev/null
+++ b/neozip/test/test_deflate_header.cc
@@ -0,0 +1,71 @@
+/* test_deflate_header.cc - Test deflateSetHeader() with small buffers */
+
+#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 <gtest/gtest.h>
+
+#include "test_shared.h"
+
+TEST(deflate, header) {
+    PREFIX3(stream) c_stream;
+    PREFIX(gz_header) *head;
+    uint8_t compr[128];
+    z_size_t compr_len = sizeof(compr);
+    int err;
+
+    head = (PREFIX(gz_header) *)calloc(1, sizeof(PREFIX(gz_header)));
+    ASSERT_TRUE(head != NULL);
+
+    memset(&c_stream, 0, sizeof(c_stream));
+
+    /* gzip */
+    err = PREFIX(deflateInit2)(&c_stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, MAX_WBITS + 16, 8, Z_DEFAULT_STRATEGY);
+    EXPECT_EQ(err, Z_OK);
+
+    head->text = 1;
+    head->comment = (uint8_t *)"comment";
+    head->name = (uint8_t *)"name";
+    head->hcrc = 1;
+    head->extra = (uint8_t *)"extra";
+    head->extra_len = (uint32_t)strlen((const char *)head->extra);
+
+    err = PREFIX(deflateSetHeader)(&c_stream, head);
+    EXPECT_EQ(err, Z_OK);
+
+    PREFIX(deflateBound)(&c_stream, (unsigned long)compr_len);
+
+    c_stream.next_in  = (unsigned char *)hello;
+    c_stream.next_out = compr;
+
+    while (c_stream.total_in != hello_len && c_stream.total_out < compr_len) {
+        c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
+        err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
+        EXPECT_EQ(err, Z_OK);
+    }
+
+    /* Finish the stream, still forcing small buffers: */
+    for (;;) {
+        c_stream.avail_out = 1;
+        err = PREFIX(deflate)(&c_stream, Z_FINISH);
+        if (err == Z_STREAM_END) break;
+        EXPECT_EQ(err, Z_OK);
+    }
+
+    /* Check CRC32. */
+    EXPECT_EQ(c_stream.adler, 0xb56c3f9dU);
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    EXPECT_EQ(err, Z_OK);
+
+    free(head);
+}