1 files changed, 54 insertions, 0 deletions
diff --git a/tests/xttest_scalar.cpp b/tests/xttest_scalar.cpp
new file mode 100644
index 0000000..4a11486
--- /dev/null
+++ b/tests/xttest_scalar.cpp
@@ -0,0 +1,54 @@
+
+#include "xttest_util.hpp"
+
+#include "xtract/xtract_scalar.h"
+
+#include "catch.hpp"
+
+
+SCENARIO( "F0 is correctly detected for a clean sine wave", "[xtract_f0]" )
+{
+    GIVEN( "a 1024 sample block with a sample rate of 44100" )
+    {
+        uint32_t blocksize      = 1024;
+        double samplerate       = 44100;
+        double result           = 0.0;
+        double table[blocksize];
+
+        WHEN( "the frequency is 344.53125 Hz" ) // This will give a period of exactly 128 samples: 8 cycles in the block
+        {
+            double frequency = 344.53125;
+            double min       = frequency * 0.995;
+            double max       = frequency * 1.005;
+
+            WHEN( "the amplitude is 1.0" )
+            {
+                double amplitude = 1.0;
+
+                xttest_gen_sine(table, blocksize, samplerate, frequency, amplitude);
+                xtract_f0(table, blocksize, &samplerate, &result);
+                CAPTURE( result );
+
+                THEN( "the detected F0 is in the range 344.53125 ± 0.5%" )
+                {
+                    REQUIRE(result < max); 
+                    REQUIRE(result > min);
+                }
+            }
+            WHEN( "the amplitude is 0.1" )
+            {
+                double amplitude = 0.1;
+
+                xttest_gen_sine(table, blocksize, samplerate, frequency, amplitude);
+                xtract_f0(table, blocksize, &samplerate, &result);
+                CAPTURE( result );
+
+                THEN( "the detected F0 is in the range 344.53125 ± 0.5%" )
+                {
+                    REQUIRE(result < max); 
+                    REQUIRE(result > min);
+                }
+            }
+        }
+    }
+}