Fixed test to really work if numpy isn't installed.

tools/python/test/test_matrix.py

@@ -7,9 +7,9 @@ from pytest import raises
 
 try:
     import numpy
+    have_numpy = True
 except ImportError:
-    # Just skip these tests if numpy isn't installed
-    exit(0)
+    have_numpy = False 
 
 
 def test_matrix_empty_init():
@@ -57,7 +57,8 @@ def test_matrix_from_list_as_column_vector():
     assert str(m) == "0 \n1 \n2"
 
 
-def test_matrix_from_object_with_2d_shape():
+if have_numpy:
+    def test_matrix_from_object_with_2d_shape():
         m1 = numpy.array([[0, 1, 2],
                         [3, 4, 5],
                         [6, 7, 8]])
@@ -70,7 +71,7 @@ def test_matrix_from_object_with_2d_shape():
         assert str(m) == "0 1 2 \n3 4 5 \n6 7 8"
 
 
-def test_matrix_from_object_without_2d_shape():
+    def test_matrix_from_object_without_2d_shape():
         with raises(IndexError):
             m1 = numpy.array([0, 1, 2])
             matrix(m1)