Failing test

packages/babel-traverse/test/evaluation.js

@@ -0,0 +1,26 @@
+var traverse = require("../lib").default;
+var assert = require("assert");
+var parse = require("babylon").parse;
+
+function getPath(code) {
+  var ast = parse(code);
+  var path;
+  traverse(ast, {
+    Program: function (_path) {
+      path = _path;
+      _path.stop();
+    }
+  });
+  return path;
+}
+
+suite("evaluation", function () {
+  suite("evaluateTruthy", function () {
+    test("it should work with null", function () {
+      assert.strictEqual(
+        getPath("false || a.length === 0;").get("body")[0].evaluateTruthy(),
+        false
+      );
+    });
+  });
+});