Make the nonlinear beamformer steerable

webrtc/modules/audio_processing/beamformer/array_util_unittest.cc

Index: webrtc/modules/audio_processing/beamformer/array_util_unittest.cc
diff --git a/webrtc/modules/audio_processing/beamformer/array_util_unittest.cc b/webrtc/modules/audio_processing/beamformer/array_util_unittest.cc
index 57f17082252eedc82584eed7c593103ad9cd7bcd..c85c70c70f99da6611c9dd48bfdcee42c495d293 100644
--- a/webrtc/modules/audio_processing/beamformer/array_util_unittest.cc
+++ b/webrtc/modules/audio_processing/beamformer/array_util_unittest.cc
@@ -29,4 +29,28 @@ TEST(ArrayUtilTest, GetMinimumSpacing) {
   EXPECT_FLOAT_EQ(0.005f, GetMinimumSpacing(array_geometry));
 }
 
+TEST(ArrayUtilTest, DegreesToRadians) {
+  EXPECT_FLOAT_EQ(0.f, DegreesToRadians(0.f));
+  EXPECT_FLOAT_EQ(M_PI / 6.f, DegreesToRadians(30.f));
+  EXPECT_FLOAT_EQ(-M_PI / 4.f, DegreesToRadians(-45.f));
+  EXPECT_FLOAT_EQ(M_PI / 3.f, DegreesToRadians(60.f));
+  EXPECT_FLOAT_EQ(-M_PI / 2.f, DegreesToRadians(-90.f));
+  EXPECT_FLOAT_EQ(2.f * M_PI / 3.f, DegreesToRadians(120.f));
+  EXPECT_FLOAT_EQ(-3.f * M_PI / 4.f, DegreesToRadians(-135.f));
+  EXPECT_FLOAT_EQ(5.f * M_PI / 6.f, DegreesToRadians(150.f));
+  EXPECT_FLOAT_EQ(-M_PI, DegreesToRadians(-180.f));
+}
+
+TEST(ArrayUtilTest, RadiansToDegrees) {
+  EXPECT_FLOAT_EQ(0.f, RadiansToDegrees(0.f));
+  EXPECT_FLOAT_EQ(30.f, RadiansToDegrees(M_PI / 6.f));
+  EXPECT_FLOAT_EQ(-45.f, RadiansToDegrees(-M_PI / 4.f));
+  EXPECT_FLOAT_EQ(60.f, RadiansToDegrees(M_PI / 3.f));
+  EXPECT_FLOAT_EQ(-90.f, RadiansToDegrees(-M_PI / 2.f));
+  EXPECT_FLOAT_EQ(120.f, RadiansToDegrees(2.f * M_PI / 3.f));
+  EXPECT_FLOAT_EQ(-135.f, RadiansToDegrees(-3.f * M_PI / 4.f));
+  EXPECT_FLOAT_EQ(150.f, RadiansToDegrees(5.f * M_PI / 6.f));
+  EXPECT_FLOAT_EQ(-180.f, RadiansToDegrees(-M_PI));
+}
+
 }  // namespace webrtc