sample validation script

README.md

Sample validation script and test file apropos an internal excel validation project.

test.js

var valid = require('valid');
var assert = require('assert');

var testLRB = function() {
    assert(valid.LRB('') === true, "permit empty strings");
    assert(valid.LRB('X') === false, "only permit valid code chars");
    assert(valid.LRB('L') === true);
    assert(valid.LRB(' L') === false, "check for spacing");
    assert(valid.LRB('LL') === false, "require prefix operators");
    assert(valid.LRB('L+L') === true, "permit multiple code chars");
    assert(valid.LRB('L+R') === true);
    assert(valid.LRB('L+R+B') === true);
    assert(valid.LRB('L+X') === false, "only permit valid code chars");
    assert(valid.LRB('X+L') === false, "only permit valid code chars");
    assert(valid.LRB('L + R') === false, "do not permit inline spacing");
};

// modify this for testing the next validation function
var testNextColumn = function() {
    assert(valid.nextColumn('') === true);
};

// run all tests here
var runTests = function() {
    testLRB();
    testNextColumn();
};

runTests()

valid.js

module.exports.LRB = function(v) {
    if (v)
        return /^[LRB](?:\+[LRB])*$/.test(v);
    else
        return v === '';
};

module.exports.nextColumn = function(v) {
    return true;
}