tests that are functions

[DanGrayson]

Can tests actually be functions? See the last line below.

i5 : installPackage "Foo"
--installing package Foo in ../../../Library/Application Support/Macaulay2/local/
--using package sources found in /Users/dan/src/M2/M2-Macaulay2/M2/Macaulay2/packages/
--copying auxiliary source files from /Users/dan/src/M2/M2-Macaulay2/M2/Macaulay2/packages/Foo
--copying: /Users/dan/src/M2/M2-Macaulay2/M2/Macaulay2/packages/Foo/examples/___Foo.out -> ../../../Library/Application Support/Macaulay2/local/share/Macaulay2/Foo/examples/___Foo.out
--storing raw documentation in ../../../Library/Application Support/Macaulay2/local/lib/Macaulay2/x86_64-Darwin-MacOS-10.12.4/Foo/cache/rawdocumentation-dcba-8.db
--running tests that are functions