testsuite/awk.tests - codeaurora/busybox - Gitiles

 #!/bin/sh

 # Copyright 2007 by Denys Vlasenko <vda.linux@googlemail.com>
 # Licensed under GPLv2, see file LICENSE in this source tree.

 . ./testing.sh

 # testing "description" "command" "result" "infile" "stdin"

 testing "awk -F case 0" "awk -F '[#]' '{ print NF }'" ""    "" ""
 testing "awk -F case 1" "awk -F '[#]' '{ print NF }'" "0\n" "" "\n"
 testing "awk -F case 2" "awk -F '[#]' '{ print NF }'" "2\n" "" "#\n"
 testing "awk -F case 3" "awk -F '[#]' '{ print NF }'" "3\n" "" "#abc#\n"
 testing "awk -F case 4" "awk -F '[#]' '{ print NF }'" "3\n" "" "#abc#zz\n"
 testing "awk -F case 5" "awk -F '[#]' '{ print NF }'" "4\n" "" "#abc##zz\n"
 testing "awk -F case 6" "awk -F '[#]' '{ print NF }'" "4\n" "" "z#abc##zz\n"
 testing "awk -F case 7" "awk -F '[#]' '{ print NF }'" "5\n" "" "z##abc##zz\n"

 # conditions and operators
 testing "awk if operator == "  "awk 'BEGIN{if(23==23) print \"foo\"}'" "foo\n" "" ""
 testing "awk if operator != "  "awk 'BEGIN{if(23!=23) print \"bar\"}'" ""      "" ""
 testing "awk if operator >= "  "awk 'BEGIN{if(23>=23) print \"foo\"}'" "foo\n" "" ""
 testing "awk if operator < "   "awk 'BEGIN{if(2 < 13) print \"foo\"}'" "foo\n" "" ""
 testing "awk if string == "    "awk 'BEGIN{if(\"a\"==\"ab\") print \"bar\"}'" "" "" ""

 # 4294967295 = 0xffffffff
 testing "awk bitwise op"  "awk '{ print or(4294967295,1) }'" "4294967295\n" "" "\n"

 # we were testing for a non-empty body when deciding if a function was
 # defined or not. The testcase below caused:
 # awk: cmd. line:8: Call to undefined function
 prg='
 function empty_fun(count) {
   # empty
 }
 END {
   i=1
   print "L" i "\n"
   empty_fun(i + i + ++i)
   print "L" i "\n"
 }'
 testing "awk handles empty function f(arg){}" \
 	"awk '$prg'" \
 	"L1\n\nL2\n\n" \
 	"" ""

 prg='
 function outer_fun() {
   return 1
 }
 END {
   i=1
   print "L" i "\n"
   i += outer_fun()
   print "L" i "\n"
 }'
 testing "awk properly handles function from other scope" \
 	"awk '$prg'" \
 	"L1\n\nL2\n\n" \
 	"" ""

 prg='
 END {
   i=1
   print "L" i "\n"
   i + trigger_error_fun()
   print "L" i "\n"
 }'
 testing "awk properly handles undefined function" \
 	"awk '$prg' 2>&1" \
 	"L1\n\nawk: cmd. line:5: Call to undefined function\n" \
 	"" ""


 optional DESKTOP
 testing "awk hex const 1" "awk '{ print or(0xffffffff,1) }'" "4294967295\n" "" "\n"
 testing "awk hex const 2" "awk '{ print or(0x80000000,1) }'" "2147483649\n" "" "\n"
 testing "awk oct const"   "awk '{ print or(01234,1) }'"      "669\n"         "" "\n"
 SKIP=

 # check that "hex/oct integer" heuristic doesn't kick in on 00NN.NNN
 testing "awk floating const with leading zeroes" \
 	"awk '{ printf \"%f %f\n\", \"000.123\", \"009.123\" }'" \
 	"0.123000 9.123000\n" \
 	"" "\n"

 # long field seps requiring regex
 testing "awk long field sep" \
 	"awk -F-- '{ print NF, length(\$NF), \$NF }'" \
 	"2 0 \n3 0 \n4 0 \n5 0 \n" \
 	"" \
 	"a--\na--b--\na--b--c--\na--b--c--d--"

 testing "awk -F handles escapes" "awk -F'\\x21' '{print \$1}'" \
 	"a\n" \
 	"" \
 	"a!b\n"

 # '@(samp|code|file)\{' is an invalid extended regex (unmatched '{'),
 # but gawk 3.1.5 does not bail out on it.
 testing "awk gsub falls back to non-extended-regex" \
 	"awk 'gsub(\"@(samp|code|file)\{\",\"\");'; echo \$?" "0\n" "" "Hi\n"

 optional TAR BUNZIP2 FEATURE_SEAMLESS_BZ2
 test x"$SKIP" != x"1" && tar xjf awk_t1.tar.bz2
 testing "awk 'gcc build bug'" \
 	"awk -f awk_t1_opt-functions.awk -f awk_t1_opth-gen.awk <awk_t1_input | md5sum" \
 	"f842e256461a5ab1ec60b58d16f1114f  -\n" \
 	"" ""
 rm -rf awk_t1_* 2>/dev/null
 SKIP=

 Q='":"'

 testing "awk NF in BEGIN" \
 	"awk 'BEGIN { print ${Q} NF ${Q} \$0 ${Q} \$1 ${Q} \$2 ${Q} }'" \
 	":0::::\n" \
 	"" ""

 prg='
 function b(tmp) {
 	tmp = 0;
 	print "" tmp; #this line causes the bug
 	return tmp;
 }
 function c(tmpc) {
 	tmpc = b(); return tmpc;
 }
 BEGIN {
 	print (c() ? "string" : "number");
 }'
 testing "awk string cast (bug 725)" \
 	"awk '$prg'" \
 	"0\nnumber\n" \
 	"" ""

 testing "awk handles whitespace before array subscript" \
 	"awk 'BEGIN { arr [3] = 1; print arr [3] }'" "1\n" "" ""

 # GNU awk 3.1.5's "print ERRNO" prints "No such file or directory" instead of "2",
 # do we need to emulate that as well?
 testing "awk handles non-existing file correctly" \
 	"awk 'BEGIN { getline line <\"doesnt_exist\"; print ERRNO; ERRNO=0; close(\"doesnt_exist\"); print ERRNO; print \"Ok\" }'" \
 	"2\n0\nOk\n" "" ""

 prg='
 BEGIN {
   u["a"]=1
   u["b"]=1
   u["c"]=1
   v["d"]=1
   v["e"]=1
   v["f"]=1
   for (l in u) {
     print "outer1", l;
     for (l in v) {
       print " inner", l;
     }
     print "outer2", l;
   }
   print "end", l;
   l="a"
   exit;
 }'
 testing "awk nested loops with the same variable" \
 	"awk '$prg'" \
 	"\
 outer1 a
  inner d
  inner e
  inner f
 outer2 f
 outer1 b
  inner d
  inner e
  inner f
 outer2 f
 outer1 c
  inner d
  inner e
  inner f
 outer2 f
 end f
 " \
 	"" ""

 prg='
 BEGIN {
   u["a"]=1
   u["b"]=1
   u["c"]=1
   v["d"]=1
   v["e"]=1
   v["f"]=1
   for (l in u) {
     print "outer1", l;
     for (l in v) {
       print " inner", l;
       break;
     }
     print "outer2", l;
   }
   print "end", l;
   l="a"
   exit;
 }'
 # It's not just buggy, it enters infinite loop. Thus disabled
 false && test x"$SKIP_KNOWN_BUGS" = x"" && testing "awk nested loops with the same variable and break" \
 	"awk '$prg'" \
 	"\
 outer1 a
  inner d
 outer2 d
 outer1 b
  inner d
 outer2 d
 outer1 c
  inner d
 outer2 d
 end d
 " \
 	"" ""

 prg='
 function f() {
   for (l in v) {
     print " inner", l;
     return;
   }
 }

 BEGIN {
   u["a"]=1
   u["b"]=1
   u["c"]=1
   v["d"]=1
   v["e"]=1
   v["f"]=1
   for (l in u) {
     print "outer1", l;
     f();
     print "outer2", l;
   }
   print "end", l;
   l="a"
   exit;
 }'
 # It's not just buggy, it enters infinite loop. Thus disabled
 false && test x"$SKIP_KNOWN_BUGS" = x"" && testing "awk nested loops with the same variable and return" \
 	"awk '$prg'" \
 	"\
 outer1 a
  inner d
 outer2 d
 outer1 b
  inner d
 outer2 d
 outer1 c
  inner d
 outer2 d
 end d
 " \
 	"" ""

 prg='
 BEGIN{
 cnt = 0
 a[cnt] = "zeroth"
 a[++cnt] = "first"
 delete a[cnt--]
 print cnt
 print "[0]:" a[0]
 print "[1]:" a[1]
 }'
 testing "awk 'delete a[v--]' evaluates v-- once" \
 	"awk '$prg'" \
 	"\
 0
 [0]:zeroth
 [1]:
 " \
 	"" ""

 testing "awk func arg parsing 1" \
 	"awk 'func f(,) { }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""

 testing "awk func arg parsing 2" \
 	"awk 'func f(a,,b) { }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""

 testing "awk func arg parsing 3" \
 	"awk 'func f(a,) { }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""

 testing "awk func arg parsing 4" \
 	"awk 'func f(a b) { }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""

 testing "awk handles empty ()" \
 	"awk 'BEGIN {print()}' 2>&1" "awk: cmd. line:1: Empty sequence\n" "" ""

 testing "awk FS assignment" "awk '{FS=\":\"; print \$1}'" \
 	"a:b\ne\n" \
 	"" \
 	"a:b c:d\ne:f g:h"

 optional FEATURE_AWK_LIBM
 testing "awk large integer" \
 	"awk 'BEGIN{n=(2^31)-1; print n, int(n), n%1, ++n, int(n), n%1}'" \
 	"2147483647 2147483647 0 2147483648 2147483648 0\n" \
 	"" ""
 SKIP=

 testing "awk length(array)" \
 	"awk 'BEGIN{ A[1]=2; A[\"qwe\"]=\"asd\"; print length(A)}'" \
 	"2\n" \
 	"" ""

 testing "awk length()" \
 	"awk '{print length; print length(); print length(\"qwe\"); print length(99+9)}'" \
 	"3\n3\n3\n3\n" \
 	"" "qwe"

 testing "awk print length, 1" \
 	"awk '{ print length, 1 }'" \
 	"0 1\n" \
 	"" "\n"

 testing "awk print length 1" \
 	"awk '{ print length 1 }'" \
 	"01\n" \
 	"" "\n"

 testing "awk length == 0" \
 	"awk 'length == 0 { print \"foo\" }'" \
 	"foo\n" \
 	"" "\n"

 testing "awk if (length == 0)" \
 	"awk '{ if (length == 0) { print \"bar\" } }'" \
 	"bar\n" \
 	"" "\n"

 testing "awk -f and ARGC" \
 	"awk -f - input" \
 	"re\n2\n" \
 	"do re mi\n" \
 	'{print $2; print ARGC;}' \

 optional FEATURE_AWK_GNU_EXTENSIONS
 testing "awk -e and ARGC" \
 	"awk -e '{print \$2; print ARGC;}' input" \
 	"re\n2\n" \
 	"do re mi\n" \
 	""
 SKIP=

 # The examples are in fact not valid awk programs (break/continue
 # can only be used inside loops).
 # But we do accept them outside of loops.
 # We had a bug with misparsing "break ; else" sequence.
 # Test that *that* bug is fixed, using simplest possible scripts:
 testing "awk break" \
 	"awk -f - 2>&1; echo \$?" \
 	"0\n" \
 	"" \
 	'BEGIN { if (1) break; else a = 1 }'
 testing "awk continue" \
 	"awk -f - 2>&1; echo \$?" \
 	"0\n" \
 	"" \
 	'BEGIN { if (1) continue; else a = 1 }'

 optional FEATURE_AWK_GNU_EXTENSIONS
 testing "awk handles invalid for loop" \
 	"awk -e '{ for() }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""
 SKIP=

 optional FEATURE_AWK_GNU_EXTENSIONS
 testing "awk handles colon not preceded by ternary" \
 	"awk -e foo:bar: 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""
 SKIP=

 optional FEATURE_AWK_GNU_EXTENSIONS
 testing "awk errors on missing delete arg" \
 	"awk -e '{delete}' 2>&1" "awk: cmd. line:1: Too few arguments\n" "" ""
 SKIP=

 optional FEATURE_AWK_GNU_EXTENSIONS
 testing "awk printf('%c') can output NUL" \
 	"awk '{printf(\"hello%c null\n\", 0)}'" "hello\0 null\n" "" "\n"
 SKIP=

 # testing "description" "command" "result" "infile" "stdin"
 testing 'awk negative field access' \
 	'awk 2>&1 -- '\''{ $(-1) }'\' \
 	"awk: cmd. line:1: Access to negative field\n" \
 	'' \
 	'anything'

 # was misinterpreted as (("str"++) i) instead of ("str" (++i))
 # (and was executed: "str"++ is "0", thus concatenating "0" and "1"):
 testing 'awk do not allow "str"++' \
 	'awk -v i=1 "BEGIN {print \"str\" ++i}"' \
 	"str2\n" \
 	'' \
 	'anything'

 # gawk compat: FS regex matches only non-empty separators:
 # with -*, the splitting is NOT f o o b a r, but foo bar:
 testing 'awk FS regex which can match empty string' \
 	"awk -F '-*' '{print \$1 \"-\" \$2 \"=\" \$3 \"*\" \$4}'" \
 	"foo-bar=*\n" \
 	'' \
 	'foo--bar'

 # last+1 field should be empty (had a bug where it wasn't)
 testing 'awk $NF is empty' \
 	"awk -F '=+' '{print \$NF}'" \
 	"\n" \
 	'' \
 	'a=====123='

 exit $FAILCOUNT
	#!/bin/sh

	# Copyright 2007 by Denys Vlasenko <vda.linux@googlemail.com>
	# Licensed under GPLv2, see file LICENSE in this source tree.

	. ./testing.sh

	# testing "description" "command" "result" "infile" "stdin"

	testing "awk -F case 0" "awk -F '[#]' '{ print NF }'" "" "" ""
	testing "awk -F case 1" "awk -F '[#]' '{ print NF }'" "0\n" "" "\n"
	testing "awk -F case 2" "awk -F '[#]' '{ print NF }'" "2\n" "" "#\n"
	testing "awk -F case 3" "awk -F '[#]' '{ print NF }'" "3\n" "" "#abc#\n"
	testing "awk -F case 4" "awk -F '[#]' '{ print NF }'" "3\n" "" "#abc#zz\n"
	testing "awk -F case 5" "awk -F '[#]' '{ print NF }'" "4\n" "" "#abc##zz\n"
	testing "awk -F case 6" "awk -F '[#]' '{ print NF }'" "4\n" "" "z#abc##zz\n"
	testing "awk -F case 7" "awk -F '[#]' '{ print NF }'" "5\n" "" "z##abc##zz\n"

	# conditions and operators
	testing "awk if operator == " "awk 'BEGIN{if(23==23) print \"foo\"}'" "foo\n" "" ""
	testing "awk if operator != " "awk 'BEGIN{if(23!=23) print \"bar\"}'" "" "" ""
	testing "awk if operator >= " "awk 'BEGIN{if(23>=23) print \"foo\"}'" "foo\n" "" ""
	testing "awk if operator < " "awk 'BEGIN{if(2 < 13) print \"foo\"}'" "foo\n" "" ""
	testing "awk if string == " "awk 'BEGIN{if(\"a\"==\"ab\") print \"bar\"}'" "" "" ""

	# 4294967295 = 0xffffffff
	testing "awk bitwise op" "awk '{ print or(4294967295,1) }'" "4294967295\n" "" "\n"

	# we were testing for a non-empty body when deciding if a function was
	# defined or not. The testcase below caused:
	# awk: cmd. line:8: Call to undefined function
	prg='
	function empty_fun(count) {
	# empty
	}
	END {
	i=1
	print "L" i "\n"
	empty_fun(i + i + ++i)
	print "L" i "\n"
	}'
	testing "awk handles empty function f(arg){}" \
	"awk '$prg'" \
	"L1\n\nL2\n\n" \
	"" ""

	prg='
	function outer_fun() {
	return 1
	}
	END {
	i=1
	print "L" i "\n"
	i += outer_fun()
	print "L" i "\n"
	}'
	testing "awk properly handles function from other scope" \
	"awk '$prg'" \
	"L1\n\nL2\n\n" \
	"" ""

	prg='
	END {
	i=1
	print "L" i "\n"
	i + trigger_error_fun()
	print "L" i "\n"
	}'
	testing "awk properly handles undefined function" \
	"awk '$prg' 2>&1" \
	"L1\n\nawk: cmd. line:5: Call to undefined function\n" \
	"" ""


	optional DESKTOP
	testing "awk hex const 1" "awk '{ print or(0xffffffff,1) }'" "4294967295\n" "" "\n"
	testing "awk hex const 2" "awk '{ print or(0x80000000,1) }'" "2147483649\n" "" "\n"
	testing "awk oct const" "awk '{ print or(01234,1) }'" "669\n" "" "\n"
	SKIP=

	# check that "hex/oct integer" heuristic doesn't kick in on 00NN.NNN
	testing "awk floating const with leading zeroes" \
	"awk '{ printf \"%f %f\n\", \"000.123\", \"009.123\" }'" \
	"0.123000 9.123000\n" \
	"" "\n"

	# long field seps requiring regex
	testing "awk long field sep" \
	"awk -F-- '{ print NF, length(\$NF), \$NF }'" \
	"2 0 \n3 0 \n4 0 \n5 0 \n" \
	"" \
	"a--\na--b--\na--b--c--\na--b--c--d--"

	testing "awk -F handles escapes" "awk -F'\\x21' '{print \$1}'" \
	"a\n" \
	"" \
	"a!b\n"

	# '@(samp\|code\|file)\{' is an invalid extended regex (unmatched '{'),
	# but gawk 3.1.5 does not bail out on it.
	testing "awk gsub falls back to non-extended-regex" \
	"awk 'gsub(\"@(samp\|code\|file)\{\",\"\");'; echo \$?" "0\n" "" "Hi\n"

	optional TAR BUNZIP2 FEATURE_SEAMLESS_BZ2
	test x"$SKIP" != x"1" && tar xjf awk_t1.tar.bz2
	testing "awk 'gcc build bug'" \
	"awk -f awk_t1_opt-functions.awk -f awk_t1_opth-gen.awk <awk_t1_input \| md5sum" \
	"f842e256461a5ab1ec60b58d16f1114f -\n" \
	"" ""
	rm -rf awk_t1_* 2>/dev/null
	SKIP=

	Q='":"'

	testing "awk NF in BEGIN" \
	"awk 'BEGIN { print ${Q} NF ${Q} \$0 ${Q} \$1 ${Q} \$2 ${Q} }'" \
	":0::::\n" \
	"" ""

	prg='
	function b(tmp) {
	tmp = 0;
	print "" tmp; #this line causes the bug
	return tmp;
	}
	function c(tmpc) {
	tmpc = b(); return tmpc;
	}
	BEGIN {
	print (c() ? "string" : "number");
	}'
	testing "awk string cast (bug 725)" \
	"awk '$prg'" \
	"0\nnumber\n" \
	"" ""

	testing "awk handles whitespace before array subscript" \
	"awk 'BEGIN { arr [3] = 1; print arr [3] }'" "1\n" "" ""

	# GNU awk 3.1.5's "print ERRNO" prints "No such file or directory" instead of "2",
	# do we need to emulate that as well?
	testing "awk handles non-existing file correctly" \
	"awk 'BEGIN { getline line <\"doesnt_exist\"; print ERRNO; ERRNO=0; close(\"doesnt_exist\"); print ERRNO; print \"Ok\" }'" \
	"2\n0\nOk\n" "" ""

	prg='
	BEGIN {
	u["a"]=1
	u["b"]=1
	u["c"]=1
	v["d"]=1
	v["e"]=1
	v["f"]=1
	for (l in u) {
	print "outer1", l;
	for (l in v) {
	print " inner", l;
	}
	print "outer2", l;
	}
	print "end", l;
	l="a"
	exit;
	}'
	testing "awk nested loops with the same variable" \
	"awk '$prg'" \
	"\
	outer1 a
	inner d
	inner e
	inner f
	outer2 f
	outer1 b
	inner d
	inner e
	inner f
	outer2 f
	outer1 c
	inner d
	inner e
	inner f
	outer2 f
	end f
	" \
	"" ""

	prg='
	BEGIN {
	u["a"]=1
	u["b"]=1
	u["c"]=1
	v["d"]=1
	v["e"]=1
	v["f"]=1
	for (l in u) {
	print "outer1", l;
	for (l in v) {
	print " inner", l;
	break;
	}
	print "outer2", l;
	}
	print "end", l;
	l="a"
	exit;
	}'
	# It's not just buggy, it enters infinite loop. Thus disabled
	false && test x"$SKIP_KNOWN_BUGS" = x"" && testing "awk nested loops with the same variable and break" \
	"awk '$prg'" \
	"\
	outer1 a
	inner d
	outer2 d
	outer1 b
	inner d
	outer2 d
	outer1 c
	inner d
	outer2 d
	end d
	" \
	"" ""

	prg='
	function f() {
	for (l in v) {
	print " inner", l;
	return;
	}
	}

	BEGIN {
	u["a"]=1
	u["b"]=1
	u["c"]=1
	v["d"]=1
	v["e"]=1
	v["f"]=1
	for (l in u) {
	print "outer1", l;
	f();
	print "outer2", l;
	}
	print "end", l;
	l="a"
	exit;
	}'
	# It's not just buggy, it enters infinite loop. Thus disabled
	false && test x"$SKIP_KNOWN_BUGS" = x"" && testing "awk nested loops with the same variable and return" \
	"awk '$prg'" \
	"\
	outer1 a
	inner d
	outer2 d
	outer1 b
	inner d
	outer2 d
	outer1 c
	inner d
	outer2 d
	end d
	" \
	"" ""

	prg='
	BEGIN{
	cnt = 0
	a[cnt] = "zeroth"
	a[++cnt] = "first"
	delete a[cnt--]
	print cnt
	print "[0]:" a[0]
	print "[1]:" a[1]
	}'
	testing "awk 'delete a[v--]' evaluates v-- once" \
	"awk '$prg'" \
	"\
	0
	[0]:zeroth
	[1]:
	" \
	"" ""

	testing "awk func arg parsing 1" \
	"awk 'func f(,) { }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""

	testing "awk func arg parsing 2" \
	"awk 'func f(a,,b) { }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""

	testing "awk func arg parsing 3" \
	"awk 'func f(a,) { }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""

	testing "awk func arg parsing 4" \
	"awk 'func f(a b) { }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""

	testing "awk handles empty ()" \
	"awk 'BEGIN {print()}' 2>&1" "awk: cmd. line:1: Empty sequence\n" "" ""

	testing "awk FS assignment" "awk '{FS=\":\"; print \$1}'" \
	"a:b\ne\n" \
	"" \
	"a:b c:d\ne:f g:h"

	optional FEATURE_AWK_LIBM
	testing "awk large integer" \
	"awk 'BEGIN{n=(2^31)-1; print n, int(n), n%1, ++n, int(n), n%1}'" \
	"2147483647 2147483647 0 2147483648 2147483648 0\n" \
	"" ""
	SKIP=

	testing "awk length(array)" \
	"awk 'BEGIN{ A[1]=2; A[\"qwe\"]=\"asd\"; print length(A)}'" \
	"2\n" \
	"" ""

	testing "awk length()" \
	"awk '{print length; print length(); print length(\"qwe\"); print length(99+9)}'" \
	"3\n3\n3\n3\n" \
	"" "qwe"

	testing "awk print length, 1" \
	"awk '{ print length, 1 }'" \
	"0 1\n" \
	"" "\n"

	testing "awk print length 1" \
	"awk '{ print length 1 }'" \
	"01\n" \
	"" "\n"

	testing "awk length == 0" \
	"awk 'length == 0 { print \"foo\" }'" \
	"foo\n" \
	"" "\n"

	testing "awk if (length == 0)" \
	"awk '{ if (length == 0) { print \"bar\" } }'" \
	"bar\n" \
	"" "\n"

	testing "awk -f and ARGC" \
	"awk -f - input" \
	"re\n2\n" \
	"do re mi\n" \
	'{print $2; print ARGC;}' \

	optional FEATURE_AWK_GNU_EXTENSIONS
	testing "awk -e and ARGC" \
	"awk -e '{print \$2; print ARGC;}' input" \
	"re\n2\n" \
	"do re mi\n" \
	""
	SKIP=

	# The examples are in fact not valid awk programs (break/continue
	# can only be used inside loops).
	# But we do accept them outside of loops.
	# We had a bug with misparsing "break ; else" sequence.
	# Test that that bug is fixed, using simplest possible scripts:
	testing "awk break" \
	"awk -f - 2>&1; echo \$?" \
	"0\n" \
	"" \
	'BEGIN { if (1) break; else a = 1 }'
	testing "awk continue" \
	"awk -f - 2>&1; echo \$?" \
	"0\n" \
	"" \
	'BEGIN { if (1) continue; else a = 1 }'

	optional FEATURE_AWK_GNU_EXTENSIONS
	testing "awk handles invalid for loop" \
	"awk -e '{ for() }' 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""
	SKIP=

	optional FEATURE_AWK_GNU_EXTENSIONS
	testing "awk handles colon not preceded by ternary" \
	"awk -e foo:bar: 2>&1" "awk: cmd. line:1: Unexpected token\n" "" ""
	SKIP=

	optional FEATURE_AWK_GNU_EXTENSIONS
	testing "awk errors on missing delete arg" \
	"awk -e '{delete}' 2>&1" "awk: cmd. line:1: Too few arguments\n" "" ""
	SKIP=

	optional FEATURE_AWK_GNU_EXTENSIONS
	testing "awk printf('%c') can output NUL" \
	"awk '{printf(\"hello%c null\n\", 0)}'" "hello\0 null\n" "" "\n"
	SKIP=

	# testing "description" "command" "result" "infile" "stdin"
	testing 'awk negative field access' \
	'awk 2>&1 -- '\''{ $(-1) }'\' \
	"awk: cmd. line:1: Access to negative field\n" \
	'' \
	'anything'

	# was misinterpreted as (("str"++) i) instead of ("str" (++i))
	# (and was executed: "str"++ is "0", thus concatenating "0" and "1"):
	testing 'awk do not allow "str"++' \
	'awk -v i=1 "BEGIN {print \"str\" ++i}"' \
	"str2\n" \
	'' \
	'anything'

	# gawk compat: FS regex matches only non-empty separators:
	# with -*, the splitting is NOT f o o b a r, but foo bar:
	testing 'awk FS regex which can match empty string' \
	"awk -F '-' '{print \$1 \"-\" \$2 \"=\" \$3 \"\" \$4}'" \
	"foo-bar=*\n" \
	'' \
	'foo--bar'

	# last+1 field should be empty (had a bug where it wasn't)
	testing 'awk $NF is empty' \
	"awk -F '=+' '{print \$NF}'" \
	"\n" \
	'' \
	'a=====123='

	exit $FAILCOUNT