Add manual bitshuffle test

core-buffer/test/test_bitshuffle.cpp

@@ -1,3 +1,4 @@
+#include <chrono>
 #include "gtest/gtest.h"
 #include "buffer_config.hpp"
 
@@ -104,4 +105,39 @@ TEST(bitshuffle, separate_compression)
             ASSERT_EQ(out_frame_buffer[i], (i_adj%100) + 100);
         }
     }
+}
+
+using namespace std;
+using namespace chrono;
+
+TEST(bitshuffle, compression_speed)
+{
+    const int n_iterations = 100;
+    const size_t n_pixels = MODULE_N_PIXELS*32;
+
+    auto frame_buffer = make_unique<uint16_t[]>(n_pixels);
+    for (size_t i=0; i<n_pixels; i++) {
+        frame_buffer[i] = i%100;
+    }
+
+    auto compression_buffer = make_unique<char[]>(
+            bshuf_compress_lz4_bound(n_pixels, PIXEL_N_BYTES, 0));
+
+    auto start_time = steady_clock::now();
+
+    for (int i=0; i<n_iterations; i++) {
+        auto compressed_size = bshuf_compress_lz4(
+                frame_buffer.get(), // in
+                compression_buffer.get(), // out
+                n_pixels,  // size
+                PIXEL_N_BYTES,  // elem_size
+                0); // block_size
+    }
+
+    auto end_time = steady_clock::now();
+
+    size_t duration = duration_cast<microseconds>(
+            end_time-start_time).count();
+
+    cout << endl << "Duration of " << duration/100 << " microseconds" << endl;
 }