def test_equal_4(self): self.assertEqual(hollow_triangle(4), [ '___#___', '__#_#__', '_#___#_', '#######' ])
def test_equal_2(self): self.assertEqual(hollow_triangle(2), ['_#_', '###'])
def test_equal_1(self): self.assertEqual(hollow_triangle(1), ['#'])
def test_equal_6(self): self.assertEqual(hollow_triangle(9), [ '________#________', '_______#_#_______', '______#___#______', '_____#_____#_____', '____#_______#____', '___#_________#___', '__#___________#__', '_#_____________#_', '#################' ])
def test_equal_2(self): self.assertEqual(hollow_triangle(2), [ '_#_', '###' ])