got a failing test as there is no defined function yet
Defined the function addition and provided the easiest solution to get passing test
Added 2nd assert test and got failing test
Updated the return value of the arguments to get passing test
Completed the remaining addition tests. Added comment for the assert test. Put curly brackets around tests. got passing test
Added the include function and assert test. Got a failing test
Added a function for addition in production file Calculator.php
Got a failing test for 2nd assert test for addition
Updated return value to get passing test
Finished the remaining addition tests
Refactoring by adding notes and curly brackets
Added an assert test for subtraction. Got a failing test
Added a function for subtraction with the easiest solution
Added a 2nd assert test for subtraction. got a failing test
Got a passing test
Added the remaining tests for subtraction
got a failing test for first assert test
got a passing test using the easiest solution
got a failing test for 2nd assert test
got a passing test with correct return values