08-27-周三_17-09-29

node_modules/traverse/test/negative.js

@@ -0,0 +1,25 @@
+'use strict';
+
+var traverse = require('../');
+var test = require('tape');
+
+test('negative update test', function (t) {
+	var obj = [5, 6, -3, [7, 8, -2, 1], { f: 10, g: -13 }];
+	var fixed = traverse.map(obj, function (x) {
+		if (x < 0) { this.update(x + 128); }
+	});
+
+	t.same(
+		fixed,
+		[5, 6, 125, [7, 8, 126, 1], { f: 10, g: 115 }],
+		'Negative values += 128'
+	);
+
+	t.same(
+		obj,
+		[5, 6, -3, [7, 8, -2, 1], { f: 10, g: -13 }],
+		'Original references not modified'
+	);
+
+	t.end();
+});