Add utils test suite

tests/test_utils.py

@@ -0,0 +1,47 @@
+"""ProtoTorch utils test suite"""
+
+import numpy as np
+import torch
+
+import prototorch as pt
+
+
+def test_mesh2d_without_input():
+    mesh, xx, yy = pt.utils.mesh2d(border=2.0, resolution=10)
+    assert mesh.shape[0] == 100
+    assert mesh.shape[1] == 2
+    assert xx.shape[0] == 10
+    assert xx.shape[1] == 10
+    assert yy.shape[0] == 10
+    assert yy.shape[1] == 10
+    assert np.min(xx) == -2.0
+    assert np.max(xx) == 2.0
+    assert np.min(yy) == -2.0
+    assert np.max(yy) == 2.0
+
+
+def test_mesh2d_with_torch_input():
+    x = 10 * torch.rand(5, 2)
+    mesh, xx, yy = pt.utils.mesh2d(x, border=0.0, resolution=100)
+    assert mesh.shape[0] == 100 * 100
+    assert mesh.shape[1] == 2
+    assert xx.shape[0] == 100
+    assert xx.shape[1] == 100
+    assert yy.shape[0] == 100
+    assert yy.shape[1] == 100
+    assert np.min(xx) == x[:, 0].min()
+    assert np.max(xx) == x[:, 0].max()
+    assert np.min(yy) == x[:, 1].min()
+    assert np.max(yy) == x[:, 1].max()
+
+
+def test_hex_to_rgb():
+    red_rgb = list(pt.utils.hex_to_rgb(["#ff0000"]))[0]
+    assert red_rgb[0] == 255
+    assert red_rgb[1] == 0
+    assert red_rgb[2] == 0
+
+
+def test_rgb_to_hex():
+    blue_hex = list(pt.utils.rgb_to_hex([(0, 0, 255)]))[0]
+    assert blue_hex.lower() == "0000ff"