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node_modules/traverse/test/leaves.js

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+var assert = require('assert');
+var Traverse = require('traverse');
+
+exports['leaves test'] = function () {
+    var acc = [];
+    Traverse({
+        a : [1,2,3],
+        b : 4,
+        c : [5,6],
+        d : { e : [7,8], f : 9 }
+    }).forEach(function (x) {
+        if (this.isLeaf) acc.push(x);
+    });
+    
+    assert.equal(
+        acc.join(' '),
+        '1 2 3 4 5 6 7 8 9',
+        'Traversal in the right(?) order'
+    );
+};
+