Fix pytest error while building for python3.8

Author: gregogiudici

pyproject.toml

@@ -46,7 +46,7 @@ test-requires = ["pytest", "numpy"]
 # Don't test Python 3.8 wheels on macOS/arm64
 # test-skip="cp38-macosx_*:arm64"
 # Don't test Python 3.9 wheels on manylinux_i686
-test-skip="pp*-manylinux_i686"
+# test-skip="pp*-manylinux_i686"
 
 # Needed for full C++17 support
 [tool.cibuildwheel.macos.environment]

tests/test_pitch_shift.py

@@ -2,7 +2,7 @@
 import numpy as np
 
 def test_mono():
-    x1 = np.random.rand(1, 44100)
+    x1 = np.random.normal(0, 0.1, size=(1, 44100)).astype(np.float32)
 
     ps = m.Signalsmith.Stretch()
     ps.setTransposeSemitones(12)
@@ -12,7 +12,7 @@ def test_mono():
     assert y1.shape == (1, 44100)
 
 def test_stereo():
-    x1 = np.random.rand(2, 44100)
+    x1 = np.random.normal(0, 0.1, size=(2, 44100)).astype(np.float32)
 
     ps = m.Signalsmith.Stretch()
     ps.setTransposeSemitones(12)
@@ -22,14 +22,14 @@ def test_stereo():
     assert y1.shape == (2, 44100)
 
 def test_multichannel():
-    nChannels = np.random.randint(3, 10)
-    x1 = np.random.rand(nChannels, 44100)
+    n_channels = np.random.randint(3, 10)
+    x1 = np.random.normal(0, 0.1, size=(n_channels, 44100)).astype(np.float32)
 
     ps = m.Signalsmith.Stretch()
     ps.setTransposeSemitones(12)
 
     y1 = ps.process(x1)
     del ps
 
-    assert y1.shape == (nChannels, 44100)
+    assert y1.shape == (n_channels, 44100)
 

tests/test_time_stretch.py

@@ -2,8 +2,8 @@
 import numpy as np
 
 def test_mono_double_length():
-    x1 = np.random.rand(1,44100)
-    x2 = np.random.rand(1,22050)
+    x1 = np.random.normal(0, 0.1, size=(1, 44100)).astype(np.float32)
+    x2 = np.random.normal(0, 0.1, size=(1, 22050)).astype(np.float32)
 
     ps = m.Signalsmith.Stretch()
     ps.setTimeFactor(0.5)
@@ -16,8 +16,8 @@ def test_mono_double_length():
     assert y2.shape == (1, 44100)
 
 def test_mono_half_length():
-    x1 = np.random.rand(1,44100)
-    x2 = np.random.rand(1,22050)
+    x1 = np.random.normal(0, 0.1, size=(1, 44100)).astype(np.float32)
+    x2 = np.random.normal(0, 0.1, size=(1, 22050)).astype(np.float32)
 
     ps = m.Signalsmith.Stretch()
     ps.setTimeFactor(2.)
@@ -30,8 +30,8 @@ def test_mono_half_length():
     assert y2.shape == (1, 11025)
 
 def test_stereo_double_length():
-    x1 = np.random.rand(2,44100)
-    x2 = np.random.rand(2,22050)
+    x1 = np.random.normal(0, 0.1, size=(2, 44100)).astype(np.float32)
+    x2 = np.random.normal(0, 0.1, size=(2, 22050)).astype(np.float32)
 
     ps = m.Signalsmith.Stretch()
     ps.setTimeFactor(0.5)
@@ -59,8 +59,8 @@ def test_stereo_half_length():
 
 def test_multichannel_double_length():
     n_channels = np.random.randint(3, 10)
-    x1 = np.random.rand(n_channels, 44100)
-    x2 = np.random.rand(n_channels, 22050)
+    x1 = np.random.normal(0, 0.1, size=(n_channels, 44100)).astype(np.float32)
+    x2 = np.random.normal(0, 0.1, size=(n_channels, 22050)).astype(np.float32)
 
     ps = m.Signalsmith.Stretch()
     ps.setTimeFactor(0.5)
@@ -74,8 +74,8 @@ def test_multichannel_double_length():
 
 def test_multichannel_half_length():
     n_channels = np.random.randint(3, 10)
-    x1 = np.random.rand(n_channels, 44100)
-    x2 = np.random.rand(n_channels, 22050)
+    x1 = np.random.normal(0, 0.1, size=(n_channels, 44100)).astype(np.float32)
+    x2 = np.random.normal(0, 0.1, size=(n_channels, 22050)).astype(np.float32)
 
     ps = m.Signalsmith.Stretch()
     ps.setTimeFactor(2.)