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Tweaked how some errors were returned so that the functions could be unit tested.

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This commit is contained in:
Douglas Muth 2017-11-09 22:05:35 -05:00
parent a97b733444
commit eda37b2da0
1 changed files with 21 additions and 7 deletions
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28
src/lib.js
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@ -10,11 +10,24 @@ var randomNumber = require("random-number-csprng");
*/
module.exports.iCanHasGoodCrypto = iCanHasGoodCrypto = function() {
//return(false); // Debugging
if (window.crypto && window.crypto.getRandomValues) {
//
// If we don't have a Window variable, we're in Node.js, probably doing unit tests, so
// return true.
//
// Even if I screw this up and there exists a web browser that doesn't have window defined
// worst case is that a non-existant crypto.getRandomValues() function is called, and I'd rather
// have some sort of error versus a user accidentally using weak crypto.
//
if (typeof(window) == "undefined") {
return(true);
}
if (typeof(window) != "undefined") {
if (window.crypto && window.crypto.getRandomValues) {
return(true);
}
}
return(false);
} // End of i_can_has_good_crypto()
@ -26,8 +39,9 @@ module.exports.iCanHasGoodCrypto = iCanHasGoodCrypto = function() {
module.exports.getRandomValue = getRandomValue = function(max) {
return new Promise(function(resolve, reject) {
if (max <= 0){
resolve(NaN);
if (max <= 0) {
reject("max can't be less or equal to zero!");
return(null);
}
if (iCanHasGoodCrypto()) {
@ -40,7 +54,7 @@ module.exports.getRandomValue = getRandomValue = function(max) {
resolve(retval);
}).catch({code: "RandomGenerationError"}, function(err) {
console.log("randomNumber(): Something went wrong!");
reject(err);
});
@ -75,11 +89,11 @@ module.exports.getBase6 = getBase6 = function(roll, num_dice) {
//
var max_dice_roll = Math.pow(6, num_dice) - 1;
if (roll > max_dice_roll) {
throw("Value too large!");
throw(new Error("Value too large!"));
}
if (roll < 0) {
throw("Value cannot be negative!");
throw(new Error("Value cannot be negative!"));
}
//