Remove dependency on srand() and predictable output from rand()

to work around a strange problem on Windows where this test would
fail with the random values offset by 1 step.

diff --git a/test/audio_analysis_test.cc b/test/audio_analysis_test.cc
index 5cf8c02713a7eba7960f0ec6652113e3bd6af73b..c3a83186ed301befecc6771df7c2258ec39751c8 100644 (file)
--- a/test/audio_analysis_test.cc
+++ b/test/audio_analysis_test.cc
@@ -55,8 +55,6 @@ BOOST_AUTO_TEST_CASE (audio_analysis_serialisation_test)
        int const channels = 3;
        int const points = 4096;
 
-       srand (1);
-
        AudioAnalysis a (3);
        for (int i = 0; i < channels; ++i) {
                for (int j = 0; j < points; ++j) {
@@ -77,15 +75,14 @@ BOOST_AUTO_TEST_CASE (audio_analysis_serialisation_test)
        a.set_sample_rate (48000);
        a.write ("build/test/audio_analysis_serialisation_test");
 
-       srand (1);
-
        AudioAnalysis b ("build/test/audio_analysis_serialisation_test");
        for (int i = 0; i < channels; ++i) {
                BOOST_CHECK_EQUAL (b.points(i), points);
                for (int j = 0; j < points; ++j) {
-                       AudioPoint p = b.get_point (i, j);
-                       BOOST_CHECK_CLOSE (p[AudioPoint::PEAK], random_float (), 1);
-                       BOOST_CHECK_CLOSE (p[AudioPoint::RMS],  random_float (), 1);
+                       AudioPoint p = a.get_point (i, j);
+                       AudioPoint q = b.get_point (i, j);
+                       BOOST_CHECK_CLOSE (p[AudioPoint::PEAK], q[AudioPoint::PEAK], 1);
+                       BOOST_CHECK_CLOSE (p[AudioPoint::RMS],  q[AudioPoint::RMS], 1);
                }
        }