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diff --git a/source/blender/compositor/tests/COM_BufferRange_test.cc b/source/blender/compositor/tests/COM_BufferRange_test.cc
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+++ b/source/blender/compositor/tests/COM_BufferRange_test.cc
@@ -0,0 +1,98 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright 2021, Blender Foundation.
+ */
+
+#include "testing/testing.h"
+
+#include "COM_BufferRange.h"
+
+namespace blender::compositor::tests {
+
+TEST(BufferRange, Constructor)
+{
+  const int size = 5;
+  BufferRange<float> range(nullptr, 1, size, 4);
+  EXPECT_EQ(range.size(), size);
+}
+
+static void fill_buffer_with_indexes(float *buf, int buf_len)
+{
+  for (int i = 0; i < buf_len; i++) {
+    buf[i] = i;
+  }
+}
+
+TEST(BufferRange, Subscript)
+{
+  const int start = 2;
+  const int size = 4;
+  const int num_channels = 3;
+  const int buf_len = (start + size) * num_channels;
+  float buf[buf_len];
+
+  BufferRange<float> range(buf, start, size, num_channels);
+
+  fill_buffer_with_indexes(buf, buf_len);
+  int buf_index = start * num_channels;
+  for (int i = 0; i < size; i++) {
+    const float *elem = range[i];
+    for (int ch = 0; ch < num_channels; ch++) {
+      EXPECT_NEAR(elem[ch], buf_index, FLT_EPSILON);
+      buf_index++;
+    }
+  }
+  EXPECT_EQ(buf_index, buf_len);
+}
+
+TEST(BufferRange, SingleElemBufferIteration)
+{
+  const int start = 1;
+  const int size = 3;
+  const int num_channels = 4;
+  float buf[num_channels];
+  const int stride = 0;
+  BufferRange<float> range(buf, start, size, stride);
+
+  int elems_count = 0;
+  for (float *elem : range) {
+    EXPECT_EQ(elem, buf);
+    elems_count++;
+  }
+  EXPECT_EQ(elems_count, 1);
+}
+
+TEST(BufferRange, FullBufferIteration)
+{
+  const int start = 2;
+  const int size = 5;
+  const int num_channels = 4;
+  const int buf_len = (start + size) * num_channels;
+  float buf[buf_len];
+  BufferRange<float> range(buf, start, size, num_channels);
+
+  fill_buffer_with_indexes(buf, buf_len);
+  int buf_index = start * num_channels;
+  for (float *elem : range) {
+    for (int ch = 0; ch < num_channels; ch++) {
+      EXPECT_NEAR(elem[ch], buf_index, FLT_EPSILON);
+      buf_index++;
+    }
+  }
+  EXPECT_EQ(buf_index, buf_len);
+}
+
+}  // namespace blender::compositor::tests