Umama-at-Bluchip/Quick-UI

1var concatMap = require('../');2var test = require('tape');3 4test('empty or not', function (t) {5    var xs = [ 1, 2, 3, 4, 5, 6 ];6    var ixes = [];7    var ys = concatMap(xs, function (x, ix) {8        ixes.push(ix);9        return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];10    });11    t.same(ys, [ 0.9, 1, 1.1, 2.9, 3, 3.1, 4.9, 5, 5.1 ]);12    t.same(ixes, [ 0, 1, 2, 3, 4, 5 ]);13    t.end();14});15 16test('always something', function (t) {17    var xs = [ 'a', 'b', 'c', 'd' ];18    var ys = concatMap(xs, function (x) {19        return x === 'b' ? [ 'B', 'B', 'B' ] : [ x ];20    });21    t.same(ys, [ 'a', 'B', 'B', 'B', 'c', 'd' ]);22    t.end();23});24 25test('scalars', function (t) {26    var xs = [ 'a', 'b', 'c', 'd' ];27    var ys = concatMap(xs, function (x) {28        return x === 'b' ? [ 'B', 'B', 'B' ] : x;29    });30    t.same(ys, [ 'a', 'B', 'B', 'B', 'c', 'd' ]);31    t.end();32});33 34test('undefs', function (t) {35    var xs = [ 'a', 'b', 'c', 'd' ];36    var ys = concatMap(xs, function () {});37    t.same(ys, [ undefined, undefined, undefined, undefined ]);38    t.end();39});40