add TestToken

contracts/token/ApproveAndCallFallBack.sol

@@ -0,0 +1,5 @@
+pragma solidity ^0.5.3;
+
+contract ApproveAndCallFallBack {
+  function receiveApproval(address from, uint256 _amount, address _token, bytes memory _data) public;
+}

contracts/token/TestToken.sol

@@ -0,0 +1,30 @@
+pragma solidity ^0.5.3;
+
+import "./StandardToken.sol";
+import "./ApproveAndCallFallBack.sol";
+
+/**
+ * @notice ERC20Token for test scripts, can be minted by anyone.
+ */
+contract TestToken is StandardToken {
+
+  constructor() public { }
+
+  /**
+   * @notice any caller can mint any `_amount`
+   * @param _amount how much to be minted
+   */
+  function mint(uint256 _amount) public {
+    mint(msg.sender, _amount);
+  }
+
+  function approveAndCall(address _spender, uint256 _value, bytes calldata _extraData) 
+    external 
+    returns (bool success)
+  {
+    approve(msg.sender, _spender, _value);
+    ApproveAndCallFallBack(_spender).receiveApproval(msg.sender, _value, address(this), _extraData);
+    return true;
+  }
+
+}

test/subscription_spec.js

@@ -1,6 +1,6 @@
 /*global contract, config, it, assert*/
 const Subscription = require('Embark/contracts/Subscription');
-const StandardToken = require('Embark/contracts/StandardToken');
+const TestToken = require('Embark/contracts/TestToken');
 
 let accounts;
 let payor;
@@ -29,7 +29,7 @@ config({
     "Subscription": {
       args: []
     },
-    "StandardToken": {
+    "TestToken": {
       args: []
     }
   }
@@ -47,11 +47,11 @@ contract("subscription", function () {
     //const salary1 = (new web3.BigNumber(100000)).times(USD_PRECISION).dividedToIntegerBy(SECONDS_IN_A_YEAR)
 
     let balance = await web3.eth.getBalance(accounts[8])
-    console.log({accounts, balance}, StandardToken.options.address)
+    console.log({accounts, balance}, TestToken.options.address)
     // Subscription.methods.createAgreement(
     //   receiver,
     //   payor,
-    //   StandardToken.address
+    //   TestToken.address
 
     // )
   });