Testing if I forgot to make each method continuable. I am afraid I may be going insane.

continuable.test.js

describe('#*', function () {
  it('should return a continuable if a callback is not passed', function () {
    Object.keys(Db.prototype).forEach(function (functionName) {
      var params = introspect(db[functionName])

      if (params.pop() === 'callback') {
        var fnStr = db[functionName].toString()
        var line = f('if (undefined === callback) return this.%s.bind(this, %s)', functionName, params.join(', '))

        assert.isFunction(db[functionName](), functionName)
        assert.ok(~fnStr.indexOf(line), functionName)
      }
    })
  })
})