+#!/bin/sh
+
+[ "$1" = python3-constantly ] || exit 0
+
+python3 - << 'EOF'
+
+from constantly import NamedConstant, Names
+class Letters(Names):
+ a = NamedConstant()
+ b = NamedConstant()
+ c = NamedConstant()
+
+assert Letters.lookupByName('a') is Letters.a
+assert Letters.a < Letters.b
+assert Letters.b < Letters.c
+assert Letters.a < Letters.c
+
+from constantly import ValueConstant, Values
+class STATUS(Values):
+ OK = ValueConstant('200')
+ FOUND = ValueConstant('302')
+ NOT_FOUND = ValueConstant('404')
+
+assert STATUS.OK.value == '200'
+assert STATUS.lookupByValue('404') == STATUS.NOT_FOUND
+
+EOF