Tests: support running ID-property test without numpy

tests/python/bl_pyapi_idprop.py

@@ -4,9 +4,13 @@
 import bpy
 import idprop
 import unittest
-import numpy as np
 from array import array
 
+# Run if `numpy` is installed.
+try:
+    import numpy as np
+except ImportError:
+    np = None
 
 class TestHelper:
 
@@ -189,6 +193,34 @@ class TestIdPropertyGroupView(TestHelper, unittest.TestCase):
 
 class TestBufferProtocol(TestHelper, unittest.TestCase):
 
+    def test_copy(self):
+        self.id["a"] = array("i", [1, 2, 3, 4, 5])
+        self.id["b"] = self.id["a"]
+        self.assertEqual(self.id["a"].to_list(), self.id["b"].to_list())
+
+    def test_memview_attributes(self):
+        mylist = [1, 2, 3]
+        self.id["a"] = mylist
+
+        view1 = memoryview(self.id["a"])
+        view2 = memoryview(array("i", mylist))
+
+        self.assertEqualMemviews(view1, view2)
+
+    def assertEqualMemviews(self, view1, view2):
+        props_to_compare = (
+            "contiguous", "format", "itemsize", "nbytes", "ndim",
+            "readonly", "shape", "strides", "suboffsets"
+        )
+        for attr in props_to_compare:
+            self.assertEqual(getattr(view1, attr), getattr(view2, attr))
+
+        self.assertEqual(list(view1), list(view2))
+        self.assertEqual(view1.tobytes(), view2.tobytes())
+
+
+if np is not None:
+    class TestBufferProtocol_Numpy(TestHelper, unittest.TestCase):
         def test_int(self):
             self.id["a"] = array("i", [1, 2, 3, 4, 5])
             a = np.frombuffer(self.id["a"], self.id["a"].typecode)
@@ -221,30 +253,6 @@ class TestBufferProtocol(TestHelper, unittest.TestCase):
             a[1:5] = [10, 20, 30, 40]
             self.assertEqual(self.id["a"].to_list(), [1, 10, 20, 30, 40, 6, 7, 8])
 
-    def test_copy(self):
-        self.id["a"] = array("i", [1, 2, 3, 4, 5])
-        self.id["b"] = self.id["a"]
-        self.assertEqual(self.id["a"].to_list(), self.id["b"].to_list())
-
-    def test_memview_attributes(self):
-        mylist = [1, 2, 3]
-        self.id["a"] = mylist
-
-        view1 = memoryview(self.id["a"])
-        view2 = memoryview(array("i", mylist))
-
-        self.assertEqualMemviews(view1, view2)
-
-    def assertEqualMemviews(self, view1, view2):
-        props_to_compare = (
-            "contiguous", "format", "itemsize", "nbytes", "ndim",
-            "readonly", "shape", "strides", "suboffsets"
-        )
-        for attr in props_to_compare:
-            self.assertEqual(getattr(view1, attr), getattr(view2, attr))
-
-        self.assertEqual(list(view1), list(view2))
-        self.assertEqual(view1.tobytes(), view2.tobytes())
 
 class TestRNAData(TestHelper, unittest.TestCase):
 
@@ -309,7 +317,6 @@ class TestRNAData(TestHelper, unittest.TestCase):
         self.assertEqual(rna_data["default"], [1, 2])
 
 
-
 if __name__ == '__main__':
     import sys
     sys.argv = [__file__] + (sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else [])