fix: made all the tests consistent. now with done.

test/BasicToken.js

@@ -1,21 +1,23 @@
 contract('BasicToken', function(accounts) {
 
-  it("should return the correct totalSupply after construction", async function() {
+  it("should return the correct totalSupply after construction", async function(done) {
     let token = await BasicTokenMock.new(accounts[0], 100);
     let totalSupply = await token.totalSupply();
     assert.equal(totalSupply, 100);
+    done();
   })
 
-  it("should return correct balances after transfer", async function(){
+  it("should return correct balances after transfer", async function(done){
     let token = await BasicTokenMock.new(accounts[0], 100);
     let transfer = await token.transfer(accounts[1], 100);
     let firstAccountBalance = await token.balanceOf(accounts[0]);
     assert.equal(firstAccountBalance, 0);
     let secondAccountBalance = await token.balanceOf(accounts[1]);
     assert.equal(secondAccountBalance, 100);
+    done();
   });
 
-  it("should throw an error when trying to transfer more than balance", async function() {
+  it("should throw an error when trying to transfer more than balance", async function(done) {
 
     let token = await BasicTokenMock.new(accounts[0], 100);
     try {
@@ -23,6 +25,7 @@ contract('BasicToken', function(accounts) {
     } catch(error) {
       if (error.message.search('invalid JUMP') === -1) throw error
       assert.isAbove(error.message.search('invalid JUMP'), -1, 'Invalid JUMP error must be returned');
+      done();
     }
   });