$ cabal test
Running 2 test suites...
Test suite doctests: RUNNING...
Test suite doctests: PASS
Test suite logged to: dist\test\pi-eta-epsilon-0.0.1-doctests.log
Test suite tests: RUNNING...
Test suite tests: PASS
Test suite logged to: dist\test\pi-eta-epsilon-0.0.1-tests.log
2 of 2 test suites (2 of 2 test cases) passed.