Add Audiobuffers::set_channels().

[dcpomatic.git] / test / audio_buffers_test.cc

diff --git a/test/audio_buffers_test.cc b/test/audio_buffers_test.cc
index 0abd730809484a869c4c9b6d65b062fa459020f2..76785d8ecb09adf1d2bd4b24b1cd5cc5340812ab 100644 (file)
--- a/test/audio_buffers_test.cc
+++ b/test/audio_buffers_test.cc
@@ -344,3 +344,44 @@ BOOST_AUTO_TEST_CASE (audio_buffers_trim_start)
        }
 }
 
+
+BOOST_AUTO_TEST_CASE(audio_buffers_set_channels_lower)
+{
+       AudioBuffers buffers(9, 9933);
+       srand(4);
+       random_fill(buffers);
+
+       buffers.set_channels(4);
+       BOOST_REQUIRE_EQUAL(buffers.channels(), 4U);
+
+       srand(4);
+       for (int i = 0; i < 9933; ++i) {
+               for (int c = 0; c < 4; ++c) {
+                       BOOST_CHECK_EQUAL(buffers.data(c)[i], random_float());
+               }
+               for (int c = 4; c < 9; ++c) {
+                       random_float();
+               }
+       }
+}
+
+
+BOOST_AUTO_TEST_CASE(audio_buffers_set_channels_higher)
+{
+       AudioBuffers buffers(9, 9933);
+       srand(4);
+       random_fill(buffers);
+
+       buffers.set_channels(13);
+       BOOST_REQUIRE_EQUAL(buffers.channels(), 13U);
+
+       srand(4);
+       for (int i = 0; i < 9933; ++i) {
+               for (int c = 0; c < 9; ++c) {
+                       BOOST_CHECK_EQUAL(buffers.data(c)[i], random_float());
+               }
+               for (int c = 9; c < 13; ++c) {
+                       BOOST_CHECK_EQUAL(buffers.data(c)[i], 0);
+               }
+       }
+}