28 lines
774 B
JavaScript
28 lines
774 B
JavaScript
var test = require('tap').test;
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var burrito = require('../');
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test('check parent', function (t) {
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t.plan(5);
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var src = 'Math.tan(0) + Math.sin(0)';
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var res = burrito.microwave(src, function (node) {
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if (node.name === 'binary') {
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node.wrap('%a - %b');
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}
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else if (node.name === 'num') {
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t.equal(node.parent().value[0][0], 'dot');
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var fn = node.parent().value[0][2];
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if (fn === 'sin') {
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node.wrap('Math.PI / 2');
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}
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else if (fn === 'tan') {
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node.wrap('Math.PI / 4');
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}
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else t.fail('Unknown fn');
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}
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});
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t.equal(res, Math.tan(Math.PI / 4) - Math.sin(Math.PI / 2)); // ~ 0
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});
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