t/t0001-sanity.sh

   1 #!/bin/sh
   2
   3 test_description='various sanity checks
   4
   5 Most of these are "tolerate_failure" checks
   6 as there are workarounds in place for them.
   7 '
   8
   9 TEST_NO_CREATE_REPO=1
  10
  11 . ./test-lib.sh
  12
  13 test_plan 15
  14
  15 # required working
  16
  17 test_expect_success 'POSIX tr to NUL processing' '
  18         printf "1x2x3x" | tr "x" "\\000" >lines3z &&
  19         val="$(xargs -0 <lines3z printf "%s\n" | wc -l)" &&
  20         test $val -eq 3
  21 '
  22
  23 test_expect_success 'POSIX tr from NUL processing' '
  24         val="$(echo "x@@@y" | tr "x@y" "1\\0005" | tr "\\000" 2)" &&
  25         test z"$val" = z"12225"
  26 '
  27
  28 # tolerated breakage
  29
  30 test_tolerate_failure 'POSIX unset behavior' '
  31         test z"$(unset it && unset it && echo good || echo bad)" = z"good"
  32 '
  33
  34 test_tolerate_failure 'POSIX exec behavior' '
  35         test z"$(false() { :; }; (exec false) && echo "bad" || echo "good")" = z"good"
  36 '
  37
  38 test_tolerate_failure 'POSIX eval behavior' '
  39         setec() { ! : || eval "ec=\$?"; } &&
  40         setec && test z"$ec" = z"1"
  41 '
  42
  43 test_tolerate_failure 'POSIX trap EXIT behavior' '
  44         nomsg() { trap "echo bad" EXIT; } &&
  45         result="$(nomsg && trap - EXIT)" &&
  46         test z"${result:-good}" = z"good"
  47 '
  48
  49 test_tolerate_failure 'POSIX alias' '
  50         alias some=alias
  51 '
  52
  53 test_tolerate_failure LASTOK 'POSIX unalias -a (no subshell)' '
  54         alias some=alias &&
  55         unalias -a
  56 '
  57
  58 test_tolerate_failure LASTOK 'POSIX unalias -a (subshell w/o aliases)' '
  59         unalias -a
  60 '
  61
  62 test_tolerate_failure 'POSIX function redir ops' '
  63         redir() {
  64                 echo bad stderr >&2
  65                 echo bad stdout
  66         } >/dev/null 2>&1 &&
  67         test z"$(redir && echo good)" = z"good"
  68 '
  69
  70 test_tolerate_failure 'unsettable LINENO' '
  71         { unset LINENO || :; }
  72 '
  73
  74 test_tolerate_failure 'working awk implementation' '
  75         # mawk will have a segmentation fault with this
  76         awk "
  77 function f1(a1) {}
  78 function f2(a2) {
  79         f1(a2);
  80         for (;;) break;
  81 }
  82 function f3() {
  83         f2(a3);
  84         a3[1];
  85 }
  86 BEGIN { exit; }
  87 "'
  88
  89 test_tolerate_failure 'POSIX awk pattern brace quantifiers' '
  90         # mawk stupidly does not support these
  91         # can you hear us mocking you mawk?
  92         result="$(echo not-mawk | awk "/^[a-z-]{5,}\$/")" &&
  93         test z"$result" = z"not-mawk"
  94 '
  95
  96 test_tolerate_failure 'POSIX awk ENVIRON array' '
  97         EVAR="This  is  some  test  here" &&
  98         export EVAR &&
  99         val="$(awk "BEGIN{exit}END{print ENVIRON[\"EVAR\"]}")" &&
 100         test z"$val" = z"$EVAR"
 101 '
 102
 103 test_tolerate_failure 'POSIX export unset var exports it' '
 104         say_color info "# POSIX is, regrettably, quite explicit about this" &&
 105         say_color info "# POSIX requires EVERY exported variable to be in child environment" &&
 106         unset NO_SUCH_VAR &&
 107         export NO_SUCH_VAR &&
 108         printenv NO_SUCH_VAR >/dev/null
 109 '
 110
 111 test_done