must/test/must/at_test.js

Testing and assertion library with friendly BDD syntax — awesome.must.be.true(). Many expressive matchers and is test runner and framework agnostic. Follows RFC 2119 with its use of MUST. Good and well tested stuff.

var Must = require("../..")
var assert = require("./assert")

describe("Must.prototype.at", function() {
  it("must return self", function() {
    var must = Must(true)
    assert.strictEqual(must.at, must)
  })
})