08-27-周三_17-09-29

node_modules/traverse/test/siblings.js

@@ -0,0 +1,39 @@
+'use strict';
+
+var test = require('tape');
+var traverse = require('../');
+
+test('siblings', function (t) {
+	var obj = { a: 1, b: 2, c: [4, 5, 6] };
+
+	var res = traverse(obj).reduce(function (acc) {
+		/* eslint no-param-reassign: 0 */
+		var p = '/' + this.path.join('/');
+		if (this.parent) {
+			acc[p] = {
+				siblings: this.parent.keys,
+				key: this.key,
+				index: this.parent.keys.indexOf(this.key),
+			};
+		} else {
+			acc[p] = {
+				siblings: [],
+				key: this.key,
+				index: -1,
+			};
+		}
+		return acc;
+	}, {});
+
+	t.same(res, {
+		'/': { siblings: [], key: undefined, index: -1 },
+		'/a': { siblings: ['a', 'b', 'c'], key: 'a', index: 0 },
+		'/b': { siblings: ['a', 'b', 'c'], key: 'b', index: 1 },
+		'/c': { siblings: ['a', 'b', 'c'], key: 'c', index: 2 },
+		'/c/0': { siblings: ['0', '1', '2'], key: '0', index: 0 },
+		'/c/1': { siblings: ['0', '1', '2'], key: '1', index: 1 },
+		'/c/2': { siblings: ['0', '1', '2'], key: '2', index: 2 },
+	});
+
+	t.end();
+});