code: def test_show_falsey(tmp_dir, dvc):
      tmp_dir.gen("metrics.json", '{"foo": 0, "bar": 0.0, "baz": {}}')
      assert dvc.metrics.show(targets=["metrics.json"]) == {
          "": {
              "data": {"metrics.json": {"data": {"foo": 0, "bar": 0.0}}}
          }
      }
  
imports: import json
  import os
  from os.path import join
  import pytest
  from funcy import get_in
  from dvc.cli import main
  from dvc.dvcfile import PROJECT_FILE
  from dvc.exceptions import OverlappingOutputPathsError
  from dvc.repo import Repo
  from dvc.utils.fs import remove
  from dvc.utils.serialize import JSONFileCorruptedError
label_desc: Use image node_id 13 for calling a global function with example usage: test_show_falsey(tmp_dir, dvc) without return types