Use temp dir for io test

[f0uriest]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.05%. Comparing base (70001bc) to head (209be29).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #918   +/-   ##
=======================================
  Coverage   95.05%   95.05%           
=======================================
  Files          83       83           
  Lines       20970    20970           
=======================================
  Hits        19934    19934           
  Misses       1036     1036           

[github-actions]

|             benchmark_name             |         dt(%)          |         dt(s)          |        t_new(s)        |        t_old(s)        | 
| -------------------------------------- | ---------------------- | ---------------------- | ---------------------- | ---------------------- |
 test_build_transform_fft_lowres         |     -1.40 +/- 1.14     | -1.78e-04 +/- 1.45e-04 |  1.25e-02 +/- 1.1e-04  |  1.27e-02 +/- 9.6e-05  |
 test_build_transform_fft_midres         |     -0.35 +/- 1.24     | -3.24e-04 +/- 1.14e-03 |  9.11e-02 +/- 1.0e-03  |  9.14e-02 +/- 4.8e-04  |
 test_build_transform_fft_highres        |     +0.85 +/- 1.73     | +3.90e-03 +/- 7.93e-03 |  4.62e-01 +/- 7.0e-03  |  4.58e-01 +/- 3.8e-03  |
 test_equilibrium_init_lowres            |     -0.68 +/- 1.91     | -4.11e-03 +/- 1.15e-02 |  5.98e-01 +/- 1.1e-02  |  6.02e-01 +/- 3.5e-03  |
 test_equilibrium_init_medres            |     -0.26 +/- 1.18     | -3.15e-03 +/- 1.44e-02 |  1.22e+00 +/- 9.8e-03  |  1.22e+00 +/- 1.1e-02  |
 test_equilibrium_init_highres           |     +0.51 +/- 1.10     | +2.10e-02 +/- 4.53e-02 |  4.15e+00 +/- 3.2e-02  |  4.13e+00 +/- 3.2e-02  |
 test_objective_compile_dshape_current   |     -0.07 +/- 1.20     | -3.03e-03 +/- 5.49e-02 |  4.57e+00 +/- 5.3e-02  |  4.57e+00 +/- 1.3e-02  |
 test_objective_compile_atf              |     -0.90 +/- 3.27     | -8.37e-02 +/- 3.02e-01 |  9.18e+00 +/- 2.0e-01  |  9.26e+00 +/- 2.2e-01  |
 test_objective_compute_dshape_current   |     -1.63 +/- 1.09     | -1.05e-04 +/- 7.07e-05 |  6.38e-03 +/- 5.8e-05  |  6.49e-03 +/- 4.1e-05  |
 test_objective_compute_atf              |     +1.22 +/- 1.61     | +1.60e-04 +/- 2.11e-04 |  1.33e-02 +/- 1.7e-04  |  1.31e-02 +/- 1.3e-04  |
 test_objective_jac_dshape_current       |     +4.20 +/- 6.79     | +1.90e-03 +/- 3.07e-03 |  4.71e-02 +/- 1.9e-03  |  4.52e-02 +/- 2.4e-03  |
 test_objective_jac_atf                  |     -2.48 +/- 2.50     | -5.22e-02 +/- 5.25e-02 |  2.05e+00 +/- 4.7e-02  |  2.10e+00 +/- 2.4e-02  |
 test_perturb_1                          |     -0.09 +/- 0.95     | -1.25e-02 +/- 1.27e-01 |  1.33e+01 +/- 3.5e-02  |  1.33e+01 +/- 1.2e-01  |
 test_perturb_2                          |     -0.70 +/- 2.19     | -1.34e-01 +/- 4.21e-01 |  1.91e+01 +/- 2.9e-01  |  1.92e+01 +/- 3.1e-01  |
 test_proximal_jac_atf                   |     -0.04 +/- 1.45     | -2.95e-03 +/- 9.79e-02 |  6.76e+00 +/- 5.7e-02  |  6.77e+00 +/- 7.9e-02  |
 test_proximal_freeb_compute             |     +0.89 +/- 1.23     | +1.07e-03 +/- 1.48e-03 |  1.21e-01 +/- 1.1e-03  |  1.20e-01 +/- 1.0e-03  |
 test_proximal_freeb_jac                 |     +0.85 +/- 2.10     | +6.77e-02 +/- 1.68e-01 |  8.07e+00 +/- 1.5e-01  |  8.00e+00 +/- 8.0e-02  |