zsh substitution - example of shell unit test with shunit2

shunit_subst.zsh

#!/usr/bin/env zsh
which shunit2 &> /dev/null || ( echo "install shunit2" && exit )

setopt shwordsplit

testSubstituteRL(){
  local file=/etc/passwd.txt
  assertEquals "substitute root" "/etc/passwd" ${file:r}
  assertEquals "substitute tail" "passwd.txt" ${file:t}
}

which uuid &> /dev/null || ( echo "install uuid" && exit )

testSubstitute_N(){
  local dirname=$(uuid)
  mkdir -p "$dirname/aDirectory"
  touch "$dirname/aFile"
  assertEquals "substitute /N (aka dir only)" "$dirname/aDirectory" $(for i in $dirname/*(/N);do;echo $i;done)
  assertEquals "substitute .N (aka file only)" "$dirname/aFile" $(for i in $dirname/*(.N);do;echo $i;done)
  rm "$dirname/aFile"
  rmdir "$dirname/aDirectory" "$dirname"
}

SHUNIT_PARENT=$0
. shunit2