zulip/web/tests/lib/stub.cjs

41 lines
1.0 KiB
JavaScript

"use strict";
const assert = require("node:assert/strict");
// Stubs don't do any magical modifications to your namespace. They
// just provide you a function that records what arguments get passed
// to it. To use stubs as something more like "spies," use something
// like set_global() to override your namespace.
exports.make_stub = function () {
const self = {};
self.num_calls = 0;
self.f = function (...args) {
self.last_call_args = args;
self.num_calls += 1;
return true;
};
self.get_args = function (...param_names) {
const result = {};
for (const [i, name] of param_names.entries()) {
result[name] = self.last_call_args[i];
}
return result;
};
return self;
};
(function test_ourselves() {
const stub = exports.make_stub();
stub.f("blue", 42);
assert.equal(stub.num_calls, 1);
const args = stub.get_args("color", "n");
assert.equal(args.color, "blue");
assert.equal(args.n, 42);
})();