Add view modifier to ERC20Allowlist.allowed (#154)

Co-authored-by: Arr00 <[email protected]>

Author: 2 people

contracts/token/ERC20/extensions/ERC20Allowlist.sol

@@ -40,7 +40,7 @@ abstract contract ERC20Allowlist is ERC20 {
     /**
      * @dev Returns the allowed status of an account.
      */
-    function allowed(address account) public virtual returns (bool) {
+    function allowed(address account) public view virtual returns (bool) {
         return _allowed[account];
     }
 

test/token/ERC20/extensions/ERC20Allowlist.test.js

@@ -156,5 +156,17 @@ describe('ERC20Allowlist', function () {
         );
       });
     });
+
+    describe('allowed', function () {
+      it('returns 1 when allowed', async function () {
+        await this.token.$_allowUser(this.holder);
+        await expect(this.token.allowed(this.holder)).to.eventually.equal(true);
+      });
+
+      it('returns 0 when disallowed', async function () {
+        await this.token.$_disallowUser(this.holder);
+        await expect(this.token.allowed(this.holder)).to.eventually.equal(false);
+      });
+    });
   });
 });