mapping not updated

Question

I'm testing a very primitive contract using mapping.

contract PhysicalContract {
    
    uint numContracts;
    
    mapping (address => uint) contracts_test;

    function newDeal(address adr, uint value) public{

        contracts_test[adr] = value; 

        numContracts++;
    }
}

The variable numContracts is successfully updated when I call newDeal(..) but not the mapping contracts_test.. It keeps desperately empty.

Any help would be greatly appreciated - Thanks

Answer 1

I am not sure how you test it but I wrote a function that shows it is actually not empty.

pragma solidity ^0.5.9;  
    
contract PhysicalContract {
      
    uint numContracts;    
    mapping (address => uint) contracts_test;
    
    function newDeal(address adr, uint value) public {
        contracts_test[adr] = value; 
        numContracts++;
    }
        
    function indexE(address adr) public returns (uint) {
        return contracts_test[adr];
    }
}

Using REMIX editor, I first use newDeal to add values. Based on the address I use, I can return the corresponding uint of contracts_test.