Create pi_token_test.sol

projects/DAPIO/tests/unit-tests/pi_token_test.sol

@@ -0,0 +1,44 @@
+pragma solidity ^0.8.0;
+
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/test/ERC20Test.sol";
+import "../smart-contracts/pi-network/pi_token.sol";
+
+contract PiTokenTest is ERC20Test {
+    PiToken private piToken;
+
+    function setUp() public {
+        piToken = new PiToken();
+    }
+
+    function testTransfer() public {
+        address alice = address(0x123);
+        address bob = address(0x456);
+        uint256 amount = 100;
+
+        piToken.transfer(alice, amount);
+        assertEq(piToken.balanceOf(alice), amount);
+
+        piToken.transfer(bob, amount);
+        assertEq(piToken.balanceOf(bob), amount);
+    }
+
+    function testApprove() public {
+        address alice = address(0x123);
+        address bob = address(0x456);
+        uint256 amount = 100;
+
+        piToken.approve(alice, amount);
+        assertEq(piToken.allowance(alice, bob), amount);
+    }
+
+    function testTransferFrom() public {
+        address alice = address(0x123);
+        address bob = address(0x456);
+        uint256 amount = 100;
+
+        piToken.transfer(alice, amount);
+        piToken.approve(alice, amount);
+        piToken.transferFrom(alice, bob, amount);
+        assertEq(piToken.balanceOf(bob), amount);
+    }
+}