[Tests] Source nvm.sh before defining FILE

test/fast/Unit tests/nvm_get_default_packages

@@ -1,8 +1,9 @@
 #!/bin/sh
 
-FILE="$NVM_DIR/default-packages"
 \. ../../../nvm.sh
 
+FILE="$NVM_DIR/default-packages"
+
 die () { echo "$@" ; cleanup ; exit 1; }
 setup () {
   if [ -f $FILE ]; then