1 files changed, 65 insertions, 0 deletions
diff --git a/src/3rdparty/resonance-audio/resonance_audio/ambisonics/utils_test.cc b/src/3rdparty/resonance-audio/resonance_audio/ambisonics/utils_test.cc
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index 000000000..51dfa13d5
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+++ b/src/3rdparty/resonance-audio/resonance_audio/ambisonics/utils_test.cc
@@ -0,0 +1,65 @@
+/*
+Copyright 2018 Google Inc. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS-IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#include "ambisonics/utils.h"
+
+#include "third_party/googletest/googletest/include/gtest/gtest.h"
+#include "base/constants_and_types.h"
+
+namespace vraudio {
+
+namespace {
+
+// Ambisonic Channel Numbers (ACNs) used in the tests.
+const size_t kAcnChannels[] = {0, 1, 4, 8, 16, 32};
+
+// Number of different ACNs to be tested.
+const size_t kNumAcnChannels = sizeof(kAcnChannels) / sizeof(kAcnChannels[0]);
+
+// Tests that the Ambisonic order for a given channel returned by the
+// GetPeriphonicAmbisonicOrderForChannel() method is correct.
+TEST(UtilsTest, GetPeriphonicAmbisonicOrderForChannelTest) {
+  const int kExpectedOrders[] = {0, 1, 2, 2, 4, 5};
+  for (size_t channel = 0; channel < kNumAcnChannels; ++channel) {
+    EXPECT_EQ(kExpectedOrders[channel],
+              GetPeriphonicAmbisonicOrderForChannel(kAcnChannels[channel]));
+  }
+}
+
+// Tests that the Ambisonic degree for a given channel returned by the
+// GetPeriphonicAmbisonicDegreeForChannel() method is correct.
+TEST(UtilsTest, GetPeriphonicAmbisonicDegreeForChannelTest) {
+  const int kExpectedDegrees[] = {0, -1, -2, 2, -4, 2};
+  for (size_t channel = 0; channel < kNumAcnChannels; ++channel) {
+    EXPECT_EQ(kExpectedDegrees[channel],
+              GetPeriphonicAmbisonicDegreeForChannel(kAcnChannels[channel]));
+  }
+}
+
+// Tests that the ambisonic order validation returns the expected results for
+// arbitrary number of channels.
+TEST(UtilsTest, IsValidAmbisonicOrderTest) {
+  for (size_t valid_channel : {1, 4, 9, 16, 25, 36}) {
+    EXPECT_TRUE(IsValidAmbisonicOrder(valid_channel));
+  }
+  for (size_t invalid_channel : {2, 3, 5, 8, 50, 99}) {
+    EXPECT_FALSE(IsValidAmbisonicOrder(invalid_channel));
+  }
+}
+
+}  // namespace
+
+}  // namespace vraudio