From 6ef2eca04958266d4ce3322660074a0ebf6da8d0 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Mon, 17 May 2021 10:20:54 +0300
Subject: [PATCH] add zlib test

---
 test/zlib.cpp | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 test/zlib.cpp

diff --git a/test/zlib.cpp b/test/zlib.cpp
new file mode 100644
index 00000000..2ebaf772
--- /dev/null
+++ b/test/zlib.cpp
@@ -0,0 +1,68 @@
+#include <string.h>
+#include <zlib.h>
+
+int main()
+{
+    z_stream stream = {};
+
+    if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK)
+    {
+        return 1;
+    }
+
+    constexpr size_t BUFFER_SIZE = 1024;
+    unsigned char reference[BUFFER_SIZE];
+
+    for (size_t i = 0; i < BUFFER_SIZE; ++i)
+    {
+        reference[i] = static_cast<unsigned char>(i % 47);
+    }
+
+    unsigned char deflated[BUFFER_SIZE] = {};
+
+    stream.next_in = reference;
+    stream.avail_in = BUFFER_SIZE;
+    stream.next_out = deflated;
+    stream.avail_out = BUFFER_SIZE;
+
+    if (deflate(&stream, Z_FINISH) != Z_STREAM_END)
+    {
+        return 1;
+    }
+
+    if (deflateEnd(&stream) != Z_OK)
+    {
+        return 1;
+    }
+
+    stream = {};
+
+    if (inflateInit(&stream) != Z_OK)
+    {
+        return 1;
+    }
+
+    unsigned char inflated[BUFFER_SIZE] = {};
+
+    stream.next_in = deflated;
+    stream.avail_in = BUFFER_SIZE;
+    stream.next_out = inflated;
+    stream.avail_out = BUFFER_SIZE;
+
+    if (inflate(&stream, Z_FINISH) != Z_STREAM_END)
+    {
+        return 1;
+    }
+
+    if (inflateEnd(&stream) != Z_OK)
+    {
+        return 1;
+    }
+
+    if (memcmp(reference, inflated, BUFFER_SIZE) != 0)
+    {
+        return 1;
+    }
+
+    return 0;
+}