one-wise

One-wise combinatorial testing generator

A 1-wise (a.k.a. 1-way) testing generator guarantees that at least one value of each group appears in the generated tests. The produced array has exactly the length of the largest input array.

About

This is a fast and simple implementation of a 1-wise testing generator. No external dependencies. Uses semantic versioning.

Install

npm install one-wise

Example

oneWise( {
    "foo": [ "x", "y" ],
    "bar": [ "a", "b", "c", "d" ],
    "baz": [ "f", "g" ]
} )

will return

[
   { "foo": "x", "bar": "a", "baz": "f" },
   { "foo": "y", "bar": "b", "baz": "g" },
   { "foo": "x", "bar": "c", "baz": "f" },
   { "foo": "y", "bar": "d", "baz": "g" }
]

Note: the values of foo and bar in the last two lines are picked randomly.

It uses JavaScript's Math.random(), but a predictive pseudo-random generator function (e.g., seedrandom) can be passed as a second argument. Such function must work like Math.random() and return a number >= 0 and < 1.

oneWise( /* your object */, myPseudoRandomNumberGenerator );

Declaration

Browser

<script crossorigin src="https://unpkg.com/one-wise" ></script>
<script>
console.log(
	oneWise( {
		"foo": [ "x", "y" ],
		"bar": [ 1, 2, 3 ]
	} )
);
</script>

Option 2: Using unpkg and ESM:

<script crossorigin src="https://unpkg.com/one-wise/index.esm.js" ></script>
<script>
import oneWise from 'one-wise';
</script>

CommonJS (NodeJS)

const oneWise = require('one-wise');

ESM/TypeScript

import oneWise from 'one-wise';

API

oneWise( obj [, prngFunc ] )

• obj {object} - The given object.
• prngFunc {function} - Pseudo-random number generator function used to pick array elements to repeat. Defaults to Math.random.

See also

• shuffle-obj-arrays - Shuffles the arrays of the given object. A custom PRNG can be used.
• seedrandom - Predictive PRNG

License

MIT © Thiago Delgado Pinto