What is happening in this apex code?

Question

I am new to Apex and I am not able to understand this code. What is the meaning of the line System.assertEquals(color1, color2);

String color1 = moreColors.get(0);

String color2 = moreColors[0];

System.assertEquals(color1, color2);

// Iterate over a list to read elements

for(Integer i=0;i<colors.size();i++) {

    // Write value to the debug log

    System.debug(colors[i]);

}

Can anyone help me with this?

Answer 1

These are called assert statements, which are usually used for testing to validate that the data what you have is matches your expectations or not. Basically, System.assertEquals tests that if two values are equal or not, if they are equal then the code kept on running else it will throws an exception.

I hope this will help. 

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