这取决于您要如何以编程方式跳过测试。如果可以在运行任何测试代码之前确定跳过的条件，则可以根据条件调用it或it.skip根据需要调用。例如，如果环境变量ONE设置为任何值，这将跳过一些测试：
var conditions = {
"condition one": process.env["ONE"] !== undefined
// There could be more conditions in this table...
};
describe("conditions that can be determined ahead of time", function () {
function skip_if(condition, name, callback) {
var fn = conditions[condition] ? it.skip: it;
fn(name, callback);
};
skip_if("condition one", "test one", function () {
throw new Error("skipped!");
});
// async.
skip_if("condition one", "test one (async)", function (done) {
throw new Error("skipped!");
});
skip_if("condition two", "test two", function () {
console.log("test two!");
});
});
如果要检查的条件只能在测试时确定，则情况会有些复杂。如果您不想访问严格来说不是测试API一部分的任何内容，则可以执行以下操作：
describe("conditions that can be determined at test time", function () {
var conditions = {};
function skip_if(condition, name, callback) {
if (callback.length) {
it(name, function (done) {
if (conditions[condition])
done();
else
callback(done);
});
}
else {
it(name, function () {
if (conditions[condition])
return;
callback();
});
}
};
before(function () {
conditions["condition one"] = true;
});
skip_if("condition one", "test one", function () {
throw new Error("skipped!");
});
// async.
skip_if("condition one", "test one (async)", function (done) {
throw new Error("skipped!");
});
skip_if("condition two", "test two", function () {
console.log("test two!");
});
});
尽管我的第一个示例将测试标记为正式跳过（又称“待定”），但我刚刚显示的方法将避免执行实际测试，但不会将测试标记为正式跳过。他们将被标记为通过。如果您绝对希望跳过它们，那么我不知道除了访问测试API的一部分以外，其他任何方式都无法解决：
describe("conditions that can be determined at test time", function () {
var condition_to_test = {}; // A map from condition names to tests.
function skip_if(condition, name, callback) {
var test = it(name, callback);
if (!condition_to_test[condition])
condition_to_test[condition] = [];
condition_to_test[condition].push(test);
};
before(function () {
condition_to_test["condition one"].forEach(function (test) {
test.pending = true; // Skip the test by marking it pending!
});
});
skip_if("condition one", "test one", function () {
throw new Error("skipped!");
});
// async.
skip_if("condition one", "test one (async)", function (done) {
throw new Error("skipped!");
});
skip_if("condition two", "test two", function () {
console.log("test two!");
});
});
this.skip()以编程方式跳过测试。答案的其余部分已经过时，摩卡V3 +