Fixing import_file exception test

[jsiirola]

Fixes: N/A

Summary/Motivation:

Fix a test that was calling the wrong function

Changes proposed in this PR:

• call import_file (not run_file) in the test added in Improvements to import_file() and run_file() #70.

Legal Acknowledgement

By contributing to this software project, I agree to the following terms and conditions for my contribution:

1. I agree my contributions are submitted under the BSD license.
2. I represent I am authorized to make the contributions and grant the license. If my employer has rights to intellectual property that includes these contributions, I represent that I have received permission to make contributions and grant the required license on behalf of that employer.

[codecov-io]

Codecov Report

Merging #74 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #74   +/-   ##
=======================================
  Coverage   62.85%   62.85%           
=======================================
  Files          87       87           
  Lines        8777     8777           
=======================================
  Hits         5517     5517           
  Misses       3260     3260

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3533dcf...6ea57ee. Read the comment docs.