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node_modules/@weborigami/async-tree/test/operations/deepReverse.test.js

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+import assert from "node:assert";
+import { describe, test } from "node:test";
+import { Tree } from "../../src/internal.js";
+import deepReverse from "../../src/operations/deepReverse.js";
+
+describe("deepReverse", () => {
+  test("reverses keys at all levels of a tree", async () => {
+    const tree = {
+      a: 1,
+      b: {
+        c: 2,
+        d: 3,
+      },
+    };
+    const reversed = deepReverse.call(null, tree);
+    assert.deepEqual(await Tree.plain(reversed), {
+      b: {
+        d: 3,
+        c: 2,
+      },
+      a: 1,
+    });
+  });
+});