user.dir/slurp weirdness

gistfile1.txt

clooj.help=>
(import java.io.File)
java.io.File

clooj.help=>
(System/getProperty "user.dir")
"/projects/clooj"

clooj.help=>
(System/setProperty "user.dir" "/tmp")
"/projects/clooj"

clooj.help=>
(System/getProperty "user.dir")
"/tmp"

clooj.help=>
(.getAbsolutePath (File. "."))
"/tmp/."

clooj.help=>
(spit "test.txt" "where am i?")
nil

clooj.help=>
(.getAbsolutePath (File. "test.txt"))
"/tmp/test.txt"

clooj.help=>
(slurp "test.txt")
"where am i?"

clooj.help=>
(slurp "/projects/clooj/test.txt")
"where am i?"

clooj.help=>
(slurp "/tmp/test.txt")
#<CompilerException java.io.FileNotFoundException: /tmp/test.txt (No such file or directory) (NO_SOURCE_FILE:0)>