Split grey and binary erosion tests in two files

skimage/morphology/tests/test_binary.py

@@ -0,0 +1,49 @@
+import numpy as np
+from numpy import testing
+
+from skimage import data, color
+from skimage.util import img_as_bool
+from skimage.morphology import binary, grey, selem
+
+
+lena = color.rgb2gray(data.lena())
+bw_lena = lena > 100
+
+
+def test_non_square_image():
+    strel = selem.square(3)
+    binary_res = binary.binary_erosion(bw_lena[:100, :200], strel)
+    grey_res = img_as_bool(grey.erosion(bw_lena[:100, :200], strel))
+    testing.assert_array_equal(binary_res, grey_res)
+
+
+def test_binary_erosion():
+    strel = selem.square(3)
+    binary_res = binary.binary_erosion(bw_lena, strel)
+    grey_res = img_as_bool(grey.erosion(bw_lena, strel))
+    testing.assert_array_equal(binary_res, grey_res)
+
+
+def test_binary_dilation():
+    strel = selem.square(3)
+    binary_res = binary.binary_dilation(bw_lena, strel)
+    grey_res = img_as_bool(grey.dilation(bw_lena, strel))
+    testing.assert_array_equal(binary_res, grey_res)
+
+
+def test_binary_closing():
+    strel = selem.square(3)
+    binary_res = binary.binary_closing(bw_lena, strel)
+    grey_res = img_as_bool(grey.closing(bw_lena, strel))
+    testing.assert_array_equal(binary_res, grey_res)
+
+
+def test_binary_opening():
+    strel = selem.square(3)
+    binary_res = binary.binary_opening(bw_lena, strel)
+    grey_res = img_as_bool(grey.opening(bw_lena, strel))
+    testing.assert_array_equal(binary_res, grey_res)
+
+
+if __name__ == '__main__':
+    testing.run_module_suite()