$ bash -e -o pipefail -c swiftc Sources/main.swift -o app && ./app --self-test && ./app < examples/input.txt
Tests passed
{"degraded":false,"isentropicEfficiency":0.7289914337054222,"pressureRatio":4,"shaftPowerKw":160.79999999999998,"tag":"air-A"}
{"degraded":true,"isentropicEfficiency":0.5831931469643378,"pressureRatio":4,"shaftPowerKw":200.99999999999997,"tag":"air-B"}

$ ./app
{"degraded":false,"isentropicEfficiency":0.7289914337054222,"pressureRatio":4,"shaftPowerKw":160.79999999999998,"tag":"air-A"}
{"degraded":true,"isentropicEfficiency":0.5831931469643378,"pressureRatio":4,"shaftPowerKw":200.99999999999997,"tag":"air-B"}

$ ./app
Missing input

$ ./app
Invalid CSV row

$ ./app --unsupported
Unsupported command arguments

$ ./app
Input record too large