text: import json
  import numpy as np
  from dictionary_bme590hrm import hrm_dictionary
  
  
  def test_json():
      s = hrm_dictionary([1, 2.1, 3.2, 4.4, 5.3], 5, 5.76,
                         (-0.54, 4.68), 52.083, "testdat.csv")
      expected_data = {
          "beats (numpy array of times when a beat occurred)":
          [1, 2.1, 3.2, 4.4, 5.3],
          "num_beats (number of detected beats in the ECG strip)": 5,
          "duration (time duration of the ECG strip)": 5.76,
          "voltage_extremes (tuple with minimum and maximum lead voltages)":
          [-0.54, 4.68],
          "mean_hr_bpm (estimated average heart rate)": 52.083
          }
      with open(s) as f:
          data = json.load(f)
      assert data == expected_data
  