public function testDivide() { $column = new ColumnVector(25, 5, 1); $column2 = $column->divide(ColumnVector::initialize(3, 5)); $this->assertInstanceOf(ColumnVector::class, $column2); $this->assertSame([25.0, 5.0, 1.0], $column->toArray()); $this->assertSame([5.0, 1.0, 0.2], $column2->toArray()); }