[ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "'nvm_print_default_alias foo' should produce no output when nvm_print_implicit_alias does not; got '$OUTPUT'"
[ "$OUTPUT" = "$EXPECTED_OUTPUT" ] || die "'nvm_print_default_alias blah' should strip alias dir and print nvm_print_implicit_alias output; got '$OUTPUT', expected '$EXPECTED_OUTPUT'"