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'use strict';
var expect = require('expect');
var verifyArguments = require('../lib/helpers').verifyArguments;
function validArg() {}
describe('verifyArguments', function() {
it('should act as pass-through for a valid set of arguments', function(done) {
var args = [validArg, validArg];
expect(verifyArguments(args)).toEqual(args);
done();
});
it('should throw descriptive error message on invalid argument', function(done) {
function invalid() {
verifyArguments([validArg, 'invalid', validArg]);
}
expect(invalid).toThrow('Only functions can be combined, got string for argument 1');
done();
});
it('should throw descriptive error message on when no arguments provided', function(done) {
function empty() {
verifyArguments([]);
}
expect(empty).toThrow('A set of functions to combine is required');
done();
});
});
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