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test.js
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test.js
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function f(time, err) {
err = err || null;
return function(next, payload) {
if (time === 0)
next(err, time)
else
setTimeout(function() {
next(err, time);
}, time)
}
}
var step = step || require('./index.min')
var assert = assert || require('chai').assert
describe('测试参数合法性', function() {
it('包含除函数和数组之外的参数,测试一', function() {
assert.throws(function() {
step(f(20), f(90), 100, f(30), [f(120), f(80)])
}, 'Invalid params for "function step()"')
})
it('包含除函数和数组之外的参数,测试二', function() {
assert.throws(function() {
step(f(20), f(90), f(30), [300, f(120), f(80)])
}, 'Invalid params for "function step()"')
})
it('数组中包含其他数组', function() {
assert.throws(function() {
step(f(20), f(90), f(30), [f(120), [f(50)], f(80)])
}, 'Invalid params for "function step()"')
})
})
describe('并行序列测试', function() {
it('不包含方法,空数组', function(done) {
step([])(function(err, data) {
assert.isNull(err, '没有错误抛出')
assert.deepEqual(data, [
[]
], '结果正确')
done()
})
})
it('包含一个方法', function(done) {
step([f(300)])(function(err, data) {
assert.isNull(err, '没有错误抛出')
assert.deepEqual(data, [
[300]
], '结果正确')
done()
})
})
it('包含多个方法', function(done) {
step([f(300), f(100), f(400)])(function(err, data) {
assert.isNull(err, '没有错误抛出')
assert.deepEqual(data, [
[100, 300, 400]
], '结果正确')
done()
})
})
})
describe('串行序列测试', function() {
it('不包含方法,参数为空', function(done) {
step()(function(err, data) {
assert.isNull(err, '没有错误抛出')
assert.isArray(data)
assert.lengthOf(data, 0, '结果为空数组')
done()
})
})
it('包含一个方法', function(done) {
step(f(300))(function(err, data) {
assert.isNull(err, '没有错误抛出')
assert.deepEqual(data, [300], '结果正确')
done()
})
})
it('包含多个方法', function(done) {
step(f(300), f(100), f(400))(function(err, data) {
assert.isNull(err, '没有错误抛出')
assert.deepEqual(data, [300, 100, 400], '结果正确')
done()
})
})
})
describe('同时包含串行和并行方法序列', function() {
it('测试一(包含同步方法)', function(done) {
var foo = step(f(600), [f(220), f(0), f(680)], f(50), f(0), [f(1000)], f(240), f(180))
foo(function(err, data) {
assert.isNull(err, '没有错误抛出')
assert.deepEqual(data, [600, [0, 220, 680], 50, 0, [1000], 240, 180], '结果正确')
done()
})
})
it('测试二', function(done) {
var foo = step(f(400), f(140), [f(380), f(20)], f(500),
f(10), f(30), [f(320), f(80), f(40)], f(320), [f(20)], f(90))
foo(function(err, data) {
assert.isNull(err, '没有错误抛出')
assert.deepEqual(data, [400, 140, [20, 380], 500, 10, 30,
[40, 80, 320], 320, [20], 90], '结果正确')
done()
})
})
})
describe('测试错误捕获', function() {
it('在串行中抛出错误', function(done) {
var foo = step(f(600), [f(220), f(120), f(680)], f(50), function(next, payload) {
setTimeout(function() {
try {
throw new Error(100);
next(null, payload);
} catch (e) {
next(e);
}
}, 100)
}, [f(1000)], f(240), f(180))
foo(function(err, data) {
assert.instanceOf(err, Error, '有错误抛出')
assert.equal(err.message, 100, '错误信息为 100')
done()
})
})
it('在并行中抛出错误', function(done) {
var foo = step(f(600), [f(220), function(next, payload) {
setTimeout(function() {
try {
throw new Error(120);
next(null, payload);
} catch (e) {
next(e);
}
}, 120)
}, f(680)], f(50), [f(1000)], f(240), f(180))
foo(function(err, data) {
assert.instanceOf(err, Error, '有错误抛出')
assert.equal(err.message, 120, '错误信息为 120')
done()
})
})
})
describe('测试异步结果传递', function() {
function f(time, err) {
err = err || null;
var total = function(arr) {
var result = 0;
if(!(arr instanceof Array))
arr = [arr]
for(var i = 0; i < arr.length; i++) {
result += arr[i]
}
return result
}
return function(next, payload) {
setTimeout(function() {
next(err, time + total(payload));
}, time);
}
}
it('将返回的结果相加并传递', function(done) {
var foo = step(f(60), f(40), [f(220), f(10), f(280)], f(50), [f(500), f(90)], f(240), f(180))
foo(function(err, data) {
assert.isNull(err, '没有错误抛出')
assert.deepEqual(data, [
61, 101, [111, 321, 381], 863, [953, 1363], 2556, 2736
], '结果正确')
done()
}, 1)
})
})