Can someone check if my assertions are correct? I did test them and they worked fine, but there are still some concerns which I commented on my test class attached below (top comments are the tests I needed to make)

I have provided the code for Complex class

package cst8284.calculator;

public class Complex {

private double real = 0;

private double imag = 0;

// Complex constructor that takes in a single string, e.g. "2-4i"

public Complex(String cStr){

this(cStr.split("(?=\\+)|(?=\\-)")); // splits cStr at + or - into an array of strings having two elements

// The first element of the resultant array will be the real portion,

// while the second is the imaginary portion. This array is passed to the next constructor.

}

// Complex constructor that takes in an array of two strings from the above constructor

// e.g. cStr[0]="2", cStr[1]="-4i"

public Complex(String[] cStr){

this(cStr[0], cStr[1]);

}

// Complex constructor that takes two separate strings as parameters, e.g. "2" and "-4i"

public Complex(String r, String i){

this(Integer.parseInt(r), Integer.parseInt(i.replace("i", "")));

}

// Complex constructor that takes in two ints as parameters, e.g. 2 and -4

public Complex(int r, int i){

this((double)r, (double)i);

}

// Complex constructor that takes in two ints and stores them as floats, e.g. as 2.0 and -4.0

public Complex(double r, double i){

this.setReal(r);

this.setImag(i);

}

//default Complex constructor; it should chain automatically

public Complex(){this(0,0); }

public double getReal () {

return real;

}

public double getImag () {

return imag;

}

public void setReal (double real) {

this.real = real;

}

public void setImag (double imag) {

this.imag = imag;

}

public Complex getComplex () {

return this;

}

public String toString () {

if (getImag()

return getReal() + " + " + getImag() + "i";

}

public boolean equals (Complex c) {

return (Double.compare(this.getReal(), c.real) == 0 && Double.compare(this.getImag(), c.imag) == 0);

}

public boolean equals (int real, int imag) {

return equals(new Complex(real, imag));

}

public boolean equals (double real, double imag, double delta) {

return Math.abs(this.getReal()-real)

}

public boolean equals (String c) {

return equals(new Complex(c));

}

}

And ComplexCalculator class

package cst8284.calculator;

public class ComplexCalculator {

private java.util.Scanner op = new java.util.Scanner(System.in);

private Complex c; // stores result of current calculation for use in next calculation

public ComplexCalculator(Complex c1, Complex c2){

System.out.println("Which math operation do you wish to perform? Enter +, -, *, /");

char mathOp = op.nextLine().charAt(0);

switch (mathOp){

case '+':

c = plus(c1, c2);

break;

case '-':

c = subtract(c1, c2);

break;

case '*':

c = multiply(c1, c2);

break;

case '/':

c = divide(c1, c2);

break;

default:

System.out.println("Unknown operation requested");

}

}

public ComplexCalculator () {}

public Complex plus(Complex c1, Complex c2){

double real = c1.getReal() + c2.getReal();

double imag = c1.getImag() + c2.getImag();

c = new Complex(real, imag); // save the result to this class's Complex number

return(c);

}

public Complex subtract(Complex c1, Complex c2){

double real = c1.getReal() - c2.getReal();

double imag = c1.getImag() - c2.getImag();

c = new Complex (real, imag);

return (c);

}

public Complex multiply(Complex c1, Complex c2){

double real = c1.getReal() * c2.getReal() - c1.getImag() * c2.getImag();

double imag = c1.getReal() * c2.getImag() + c2.getReal() * c1.getImag();

c = new Complex (real, imag);

return (c);

}

public Complex divide(Complex c1, Complex c2){

double real, imag;

if ((Math.pow(c2.getReal(),2) == 0) || (Math.pow(c2.getImag(), 2) == 0)) {

real = 0;

imag = 0;

System.out.println("Divided-by-zero error detected.");

c= new Complex (real, imag);

} else {

real = (c1.getReal() * c2.getReal() + c1.getImag() * c2.getImag()) / (c2.getReal() * c2.getReal() + c2.getImag() * c2.getImag());

imag = (c2.getReal() * c1.getImag() - c1.getReal() * c2.getImag()) / (c2.getReal() * c2.getReal() + c2.getImag() * c2.getImag());

c = new Complex (real, imag);

}

return (c);

}

public Complex getComplexResult(){

return c;

}

public String toString(){

return c.toString();

}

}

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