old_contents: """SWEETer-Cat tests regarding the plotting pages."""
  
  import pytest
  import numpy as np
  from flask import url_for
  
  
  def test_plot_get_requests(client):
      """Test that all pages return status code: 200 using the end_points"""
      for end_point in ('plot', 'plot_exo'):
          plot = client.get(url_for(end_point))
  
          assert plot.status_code == 200
          assert b"Select your settings:" in plot.data
  
  
  def test_plot_post_request(client):
      test_data = {'color': 'Blue', 'x': 'teff', 'y': 'mass', 'z': 'Vmag',
                   'x1': 8000, 'x2': 2500, 'y1': 0, 'y2': 5,
                   'xscale': 'linear', 'yscale': 'log', 'checkboxes': ''}
  
      for end_point in ('plot',):  # 'plot_exo'
          plot = client.post(url_for(end_point), data=test_data, follow_redirects=True)
  
          assert plot.status_code == 200
          assert b"Select your settings:" in plot.data
  
  
  def test_post_z_none_43(client):
      """Test that setting z to None does not produce an error."""
      test_data = {"color": "Blue", "x": "teff", "y": "mass", "z": "None",
                   "x1": 8000, "x2": 2500, "y1": 0, "y2": 5,
                   "xscale": "linear", "yscale": "log", "checkboxes": ""}
  
      for end_point in ("plot", "plot_exo"):
          plot = client.post(url_for(end_point), data=test_data, follow_redirects=True)
  
          assert plot.status_code == 200
          assert b"Select your settings:" in plot.data
  
  
  @pytest.mark.parametrize("points,expected_bins", [
      (0, 5),
      (299, 5),
      (300, 6),
      (2000, 40),
  ])
  def test_scaled_histogram_bin_number(points, expected_bins):
      for scale in ("linear", "log"):
          data = np.random.rand(points)
          hist, edges, hmax = scaled_histogram(data, points, scale)
  
          assert len(hist) == expected_bins
          assert len(hist) + 1 == len(edges)
          assert np.all(hist <= hmax)
  
new_contents: """SWEETer-Cat tests regarding the plotting pages."""
  
  import pytest
  import numpy as np
  from flask import url_for
  from plot import scaled_histogram
  
  
  def test_plot_get_requests(client):
      """Test that all pages return status code: 200 using the end_points"""
      for end_point in ('plot', 'plot_exo'):
          plot = client.get(url_for(end_point))
  
          assert plot.status_code == 200
          assert b"Select your settings:" in plot.data
  
  
  def test_plot_post_request(client):
      test_data = {'color': 'Blue', 'x': 'teff', 'y': 'mass', 'z': 'Vmag',
                   'x1': 8000, 'x2': 2500, 'y1': 0, 'y2': 5,
                   'xscale': 'linear', 'yscale': 'log', 'checkboxes': ''}
  
      for end_point in ('plot',):  # 'plot_exo'
          plot = client.post(url_for(end_point), data=test_data, follow_redirects=True)
  
          assert plot.status_code == 200
          assert b"Select your settings:" in plot.data
  
  
  def test_post_z_none_43(client):
      """Test that setting z to None does not produce an error."""
      test_data = {"color": "Blue", "x": "teff", "y": "mass", "z": "None",
                   "x1": 8000, "x2": 2500, "y1": 0, "y2": 5,
                   "xscale": "linear", "yscale": "log", "checkboxes": ""}
  
      for end_point in ("plot", "plot_exo"):
          plot = client.post(url_for(end_point), data=test_data, follow_redirects=True)
  
          assert plot.status_code == 200
          assert b"Select your settings:" in plot.data
  
  
  @pytest.mark.parametrize("points,expected_bins", [
      (0, 5),
      (299, 5),
      (300, 6),
      (2000, 40),
  ])
  def test_scaled_histogram_bin_number(points, expected_bins):
      for scale in ("linear", "log"):
          data = np.random.rand(points)
          hist, edges, hmax = scaled_histogram(data, points, scale)
  
          assert len(hist) == expected_bins
          assert len(hist) + 1 == len(edges)
          assert np.all(hist <= hmax)
  
subject: Update test_plot.py