之前的文章以太坊 Truffle 合约创建 编译 迁移介绍了 Truffle 创建部署合约，下面在此基础上实践 Truffle javascript 版单元测试。
1. 创建测试文件
test/storage.js ：
var Storage = artifacts.require("Storage");
contract('Storage', function (accounts){
// --- test get
it('get storedData', function (){
var storageInstance;
return Storage.deployed().then(function (instance){
storageInstance = instance;
return storageInstance.get.call();
}).then(function(storedData){
assert.equal(storedData, 0, "storedData equal zero");
});
});
// --- test set
it('set 100 in storedData', function(){
var storageInstance;
return Storage.deployed().then(function (instance){
storageInstance = instance;
return storageInstance.set(100);
}).then(function (){
return storageInstance.get.call();
}).then(function (storedData){
assert.equal(storedData, 100, "100 wasn't in storedData");
});
});
});
2. 执行测试
$ truffle test
Using network 'development'.
Contract: Storage
✓ get storedData
✓ set 100 in storedData (43ms)
2 passing (82ms)
