tra-analysis/website/functions/node_modules/traverse/test/subexpr.js

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2019-01-06 19:14:45 +00:00
var traverse = require('../');
var test = require('tape');
test('subexpr', function (t) {
var obj = [ 'a', 4, 'b', 5, 'c', 6 ];
var r = traverse(obj).map(function (x) {
if (typeof x === 'number') {
this.update([ x - 0.1, x, x + 0.1 ], true);
}
});
t.same(obj, [ 'a', 4, 'b', 5, 'c', 6 ]);
t.same(r, [
'a', [ 3.9, 4, 4.1 ],
'b', [ 4.9, 5, 5.1 ],
'c', [ 5.9, 6, 6.1 ],
]);
t.end();
});
test('block', function (t) {
var obj = [ [ 1 ], [ 2 ], [ 3 ] ];
var r = traverse(obj).map(function (x) {
if (Array.isArray(x) && !this.isRoot) {
if (x[0] === 5) this.block()
else this.update([ [ x[0] + 1 ] ])
}
});
t.same(r, [
[ [ [ [ [ 5 ] ] ] ] ],
[ [ [ [ 5 ] ] ] ],
[ [ [ 5 ] ] ],
]);
t.end();
});