describe（）级

Question

我知道我可以使用mocha.parallel并行执行我的it()测试，但是如何在执行每个describe()测试时并行执行每个it()块describe()阻止顺序？

例如，假设我有一系列测试将文件从A点复制到B，然后从B复制到C，然后从C复制到D，这样每个测试都依赖于最后一个并且必须按顺序执行：

describe('file transfer test', function () {
    it('copies file from A to B', function (done) {...});
    it('copies file from B to C', function (done) {...});
    it('copies file from C to D', function (done) {...});
});

现在假设我想要执行此测试套件3次并行3个不同大小的不同文件：

// in parallel
describe('file transfer test 1', function () {
    it('copies file 1 from A to B', function (done) {...});
    it('copies file 1 from B to C', function (done) {...});
    it('copies file 1 from C to D', function (done) {...});
});
describe('file transfer test 2', function () {
    it('copies file 2 from A to B', function (done) {...});
    it('copies file 2 from B to C', function (done) {...});
    it('copies file 2 from C to D', function (done) {...});
});
describe('file transfer test 3', function () {
    it('copies file 3 from A to B', function (done) {...});
    it('copies file 3 from B to C', function (done) {...});
    it('copies file 3 from C to D', function (done) {...});
});

我怎样才能做到这一点？