Organize test files following contracts folders structure

test/token/BasicToken.test.js

@@ -0,0 +1,33 @@
+import assertRevert from '../helpers/assertRevert';
+
+var BasicTokenMock = artifacts.require('mocks/BasicTokenMock.sol');
+
+contract('BasicToken', function (accounts) {
+  it('should return the correct totalSupply after construction', async function () {
+    let token = await BasicTokenMock.new(accounts[0], 100);
+    let totalSupply = await token.totalSupply();
+
+    assert.equal(totalSupply, 100);
+  });
+
+  it('should return correct balances after transfer', async function () {
+    let token = await BasicTokenMock.new(accounts[0], 100);
+    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);
+  });
+
+  it('should throw an error when trying to transfer more than balance', async function () {
+    let token = await BasicTokenMock.new(accounts[0], 100);
+    await assertRevert(token.transfer(accounts[1], 101));
+  });
+
+  it('should throw an error when trying to transfer to 0x0', async function () {
+    let token = await BasicTokenMock.new(accounts[0], 100);
+    await assertRevert(token.transfer(0x0, 100));
+  });
+});