increase test coverage

packages/faucets/contracts/FaucetsERC1155.md

@@ -87,6 +87,14 @@ event Withdrawn(address indexed faucet, address indexed receiver, uint256[] toke
 modifier exists(address faucet)
 ```
 
+Modifier to check if the faucet exists.
+
+
+Parameters:
+
+| Name   | Type    | Description                |
+| :----- | :------ | :------------------------- |
+| faucet | address | The address of the faucet. |
 
 ## Functions info
 
@@ -183,6 +191,40 @@ Parameters:
 | faucet   | address | The address of the faucet.                                 |
 | newLimit | uint256 | The new maximum amount of tokens a user can claim at once. |
 
+### faucetExists (0x860ddec0)
+
+```solidity
+function faucetExists(address faucet) public view returns (bool)
+```
+
+External function to check the existence of a given faucet.
+
+
+Parameters:
+
+| Name   | Type    | Description                |
+| :----- | :------ | :------------------------- |
+| faucet | address | The address of the faucet. |
+
+### tokenExistsInFaucet (0xab9a7f86)
+
+```solidity
+function tokenExistsInFaucet(
+    address faucet,
+    uint256 tokenId
+) public view exists(faucet) returns (bool)
+```
+
+External function to check the existence of a given faucet and token.
+
+
+Parameters:
+
+| Name    | Type    | Description                 |
+| :------ | :------ | :-------------------------- |
+| faucet  | address | The address of the faucet.  |
+| tokenId | uint256 | The id of the token.        |
+
 ### addFaucet (0xe2337fa8)
 
 ```solidity
@@ -253,6 +295,23 @@ Parameters:
 | :----- | :------ | :------------------------------------ |
 | faucet | address | Address of the faucet to be disabled. |
 
+### isFaucetEnabled (0xfc490550)
+
+```solidity
+function isFaucetEnabled(
+    address faucet
+) public view exists(faucet) returns (bool)
+```
+
+Determines whether a faucet is enabled.
+
+
+Parameters:
+
+| Name   | Type    | Description            |
+| :----- | :------ | :--------------------- |
+| faucet | address | Address of the faucet. |
+
 ### removeTokens (0xecae5383)
 
 ```solidity

packages/faucets/contracts/FaucetsERC1155.sol

@@ -88,12 +88,40 @@ contract FaucetsERC1155 is Ownable, ERC1155Holder, ReentrancyGuard {
         emit LimitUpdated(faucet, newLimit);
     }
 
-    // Modifier to check if the faucet exists.
+    /**
+     * @dev Internal function to check the existence of a given faucet.
+     * @param faucet The address of the faucet.
+     */
+    function _exists(address faucet) internal view returns (bool) {
+        return faucets[faucet].isFaucet;
+    }
+
+    /**
+     * @dev External function to check the existence of a given faucet.
+     * @param faucet The address of the faucet.
+     */
+    function faucetExists(address faucet) public view returns (bool) {
+        return _exists(faucet);
+    }
+
+    /**
+     * @dev Modifier to check if the faucet exists.
+     * @param faucet The address of the faucet.
+     */
     modifier exists(address faucet) {
-        require(faucets[faucet].isFaucet, "Faucets: FAUCET_DOES_NOT_EXIST");
+        require(_exists(faucet), "Faucets: FAUCET_DOES_NOT_EXIST");
         _;
     }
 
+    /**
+     * @dev External function to check the existence of a given faucet and token.
+     * @param faucet The address of the faucet.
+     * @param tokenId The id of the token.
+     */
+    function tokenExistsInFaucet(address faucet, uint256 tokenId) public view exists(faucet) returns (bool) {
+        return faucets[faucet].tokenIdExists[tokenId];
+    }
+
     /**
      * @dev Add a new faucet to the system.
      * @param faucet The address of the ERC1155 token contract to be used as faucet.
@@ -102,7 +130,7 @@ contract FaucetsERC1155 is Ownable, ERC1155Holder, ReentrancyGuard {
      * @param tokenIds List of token IDs that this faucet will distribute.
      */
     function addFaucet(address faucet, uint256 period, uint256 limit, uint256[] memory tokenIds) public onlyOwner {
-        require(!faucets[faucet].isFaucet, "Faucets: FAUCET_ALREADY_EXISTS");
+        require(!_exists(faucet), "Faucets: FAUCET_ALREADY_EXISTS");
         require(limit > 0, "Faucets: LIMIT_ZERO");
         require(tokenIds.length > 0, "Faucets: TOKENS_CANNOT_BE_EMPTY");
 
@@ -155,6 +183,15 @@ contract FaucetsERC1155 is Ownable, ERC1155Holder, ReentrancyGuard {
         emit FaucetStatusChanged(faucet, false);
     }
 
+    /**
+     * @dev Determines whether a faucet is enabled.
+     * @param faucet Address of the faucet.
+     */
+    function isFaucetEnabled(address faucet) public view exists(faucet) returns (bool) {
+        FaucetInfo storage faucetInfo = faucets[faucet];
+        return faucetInfo.isEnabled;
+    }
+
     /**
      * @dev Remove specific tokens from a faucet.
      * @param faucet Address of the faucet.
@@ -173,6 +210,7 @@ contract FaucetsERC1155 is Ownable, ERC1155Holder, ReentrancyGuard {
             bool shouldSkip = false;
             for (uint256 j = 0; j < tokenIds.length; j++) {
                 if (currentTokenIds[i] == tokenIds[j]) {
+                    faucetInfo.tokenIdExists[currentTokenIds[i]] = false;
                     shouldSkip = true;
                     break;
                 }