found file since all code disappeared

testing/vcs/test_vcs_extends.py

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+import vcs
+import numpy
+
+box = vcs.createboxfill()
+
+box.ext_1 = True
+assert numpy.allclose(box.levels, [1e20] * 2)
+
+box.ext_2 = True
+assert numpy.allclose(box.levels, [1e20] * 2)
+
+box.levels = [1, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100]
+assert box.ext_1 == False
+assert box.ext_1 == False
+
+box.ext_1 = True
+assert box.levels[0] < -9e19
+
+box.ext_2 = True
+assert box.levels[-1] > 9e19
+
+box.ext_1 = False
+assert box.levels[0] > -9e19
+
+box.ext_2 = False
+assert box.levels[-1] < 9e19
+
+
+