def test_should_multiply_itself_by_10x10_matrix(self):
matrix = Matrix(10, 10, 2)
other_matrix = Matrix(10, 10, 1337)
matrix.multiply(other_matrix)
self.assertEquals(2 * 1337, matrix.get_item(9, 9))
def test_should_substract_other_10x10_matrix(self):
matrix = Matrix(10, 10, 1338)
other_matrix = Matrix(10, 10, 1)
matrix.subtract(other_matrix)
self.assertEquals(1337, matrix.get_item(9, 9))
def test_should_multiply_itself_by_1x1_matrix(self):
matrix = Matrix(1, 1, 2)
other_matrix = Matrix(1, 1, 1337)
matrix.multiply(other_matrix)
self.assertEquals(2 * 1337, matrix.get_item(0, 0))
def test_should_substract_other_1x1_matrix(self):
matrix = Matrix(1, 1, 1338)
other_matrix = Matrix(1, 1, 1)
matrix.subtract(other_matrix)
self.assertEquals(1337, matrix.get_item(0, 0))
def test_should_add_itself_to_other_10x10_matrix(self):
matrix = Matrix(10, 10, 1)
other_matrix = Matrix(10, 10, 1336)
matrix.add(other_matrix)
self.assertEquals(1337, matrix.get_item(9, 9))
def test_should_add_itself_to_other_1x1_matrix(self):
matrix = Matrix(1, 1, 1)
other_matrix = Matrix(1, 1, 1336)
matrix.add(other_matrix)
self.assertEquals(1337, matrix.get_item(0, 0))
def test_should_contain_1337_in_last_row_after_transpose(self):
cols = 100
rows = 1
matrix = Matrix(cols, rows, 1)
val = 1337
matrix.set_item(cols - 1, 0, val)
matrix.transpose()
self.assertEquals(val, matrix.get_item(0, cols - 1))
def should_scale_by_factor(self, factor):
matrix = Matrix(1, 1, 1)
matrix.scale_by(factor)
self.assertEquals(factor, matrix.get_item(0, 0))
def test_should_set_and_get_second_row_of_second_column(self):
matrix = Matrix(2, 2)
val = 1
matrix.set_item(1, 1, val)
self.assertEquals(val, matrix.get_item(1, 1))
def test_should_set_and_get_first_row_of_first_column(self):
matrix = Matrix(1, 1)
val = 1
matrix.set_item(0, 0, val)
self.assertEquals(val, matrix.get_item(0, 0))
def test_should_transpose_1x1_matrix(self):
matrix = Matrix(1, 1, 1)
matrix.transpose()
self.assertEquals(1, matrix.get_item(0, 0))