Nuanced Pumpkin Mavens

    test-over

    0.2.3 • Public • Published

    Test-Over

    run useful tests on your arrays or hashes of arrays or hashes

    var test = require('testover');
     
    test.max('length').over(someArray); //run your tests inline
     
    var samelength = test.equals('length'); //or set up a testing function to call later
    samelength(someArray);

    Iterate over whatever property

    triplets: [
        {name: 'Joe', age: 20}
     ,  {name: 'Josie', age: 20}
     ,  {name: 'Johnny', age: 20}
    ]
     
    test.consistent('age').over(triplets);
    test.equals('age', 20).over(triplets);

    and over associative arrays

    assoc_triplets: {
        first: {name: 'Joe', age: 20}
     ,  second: {name: 'Josie', age: 20}
     ,  third: {name: 'Johnny', age: 20}
    }
     
    test.consistent('age').over(assoc_triplets);
    test.equals('age', 20).over(assoc_triplets);

    Included tests

    • max: biggest numerical value
    • min: smallest numerical value
    • equals: if all values equal a specified value
    • consistent: if all values equal an unspecified value
    • exists: if a property exists (but might be null)
    • assigned: if a property actually exists
    • unique: if all values are unique

    Add your own tests

    The underlying process is essentially a fancy reduce function. With this in mind you can add your own reductions to do even more testing.

    Usage

    tests.add(* *<field name>, * *<reduction function>, * *<options object>)

    Reduction functions

    Reductions take the form r(property, row, reduced, opts) where property is the property passed to the new test row is the object or array currently being tested reduced is the variable being reduced (the variable that will be returned) opts is an object with extra goodies you can pass between iterations of your reduction

    You can assign an initial value by assigning opts.init when you add the new reduction, otherwise opts.init and opts.first are assigned to the first list item's value.

    Example

    test.add('noConsecutiveRepeats', function(prop, row, repeats, opts) {
        var current = row[prop];
        if (current === opts.previous) {
            return false
        } else {
            opts.previous = current;
            return repeats;
        }
    }, {init: true, previous: undefined});
     
    test.noConsecutiveRepeats('property').over(array);

    License

    MIT

    Install

    npm i test-over

    DownloadsWeekly Downloads

    1

    Version

    0.2.3

    License

    MIT

    Last publish

    Collaborators

    • cutejs