Add ambiguity test

[sungam3r]

fixes #127

[codecov-commenter]

Codecov Report

Merging #169 (88d864e) into master (5aed200) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #169   +/-   ##
=======================================
  Coverage   86.98%   86.98%           
=======================================
  Files          83       83           
  Lines        4088     4088           
  Branches      388      388           
=======================================
  Hits         3556     3556           
  Misses        488      488           
  Partials       44       44           

---

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 5aed200...88d864e. Read the comment docs.