def test_create_grid_shouldReturnArrayWithLength400(self):
		textArr=create_grid(import_grid_text())
		self.assertEquals(len(textArr),20)
		self.assertEquals(len(textArr[1]),20)
	def test_calculateBounds_ShoulReturn3And16(self):
		nums=create_grid(import_grid_text())
		lowerBound,highBound=calculateBounds(nums,4)
		self.assertEquals(lowerBound,4)
		self.assertEquals(highBound,17)
	def test_import_grid_shouldReturnText(self):
		f=import_grid_text()
		self.assertTrue(f is not None)
		self.assertTrue(len(f)>0)