metadata:
  category: Coverage
  description: Tests converted from POSIX compliance suite
  auto_generated: true
  needs_review: Tests with MANUAL_REVIEW need expected output verification
tests:
- name: '200. ARITHMETIC - OCTAL AND HEX LITERALS: octal literal'
  steps:
  - send_line: echo $((010))
  expect_output: '8'
  match_type: contains
  auto_fixed: shell_execution
- name: '200. ARITHMETIC - OCTAL AND HEX LITERALS: hex literal lowercase'
  steps:
  - send_line: echo $((0xff))
  expect_output: '255'
  match_type: contains
  auto_fixed: shell_execution
- name: '200. ARITHMETIC - OCTAL AND HEX LITERALS: hex literal uppercase'
  steps:
  - send_line: echo $((0xFF))
  expect_output: '255'
  match_type: contains
  auto_fixed: shell_execution
- name: '200. ARITHMETIC - OCTAL AND HEX LITERALS: octal in expression'
  steps:
  - send_line: echo $((010 + 1))
  expect_output: '9'
  match_type: contains
  auto_fixed: shell_execution
- name: '200. ARITHMETIC - OCTAL AND HEX LITERALS: hex in expression'
  steps:
  - send_line: echo $((0x10 + 1))
  expect_output: '17'
  match_type: contains
  auto_fixed: shell_execution
- name: '200. ARITHMETIC - OCTAL AND HEX LITERALS: mixed bases'
  steps:
  - send_line: echo $((0x10 + 010 + 10))
  expect_output: '34'
  match_type: contains
  auto_fixed: shell_execution
- name: '201. ARITHMETIC - NEGATIVE NUMBERS: negative literal'
  steps:
  - send_line: echo $((-5))
  expect_output: '-5'
  match_type: contains
  auto_fixed: shell_execution
- name: '201. ARITHMETIC - NEGATIVE NUMBERS: negative in addition'
  steps:
  - send_line: echo $((10 + -3))
  expect_output: '7'
  match_type: contains
  auto_fixed: shell_execution
- name: '201. ARITHMETIC - NEGATIVE NUMBERS: negative in subtraction'
  steps:
  - send_line: echo $((5 - -3))
  expect_output: '8'
  match_type: contains
  auto_fixed: shell_execution
- name: '201. ARITHMETIC - NEGATIVE NUMBERS: double negative'
  steps:
  - send_line: echo $((--5))
  expect_output: '5'
  match_type: contains
  auto_fixed: shell_execution
- name: '201. ARITHMETIC - NEGATIVE NUMBERS: negative multiplication'
  steps:
  - send_line: echo $((-3 * -4))
  expect_output: '12'
  match_type: contains
  auto_fixed: shell_execution
- name: '201. ARITHMETIC - NEGATIVE NUMBERS: negative division'
  steps:
  - send_line: echo $((-10 / 3))
  expect_output: '-3'
  match_type: contains
  auto_fixed: shell_execution
- name: '201. ARITHMETIC - NEGATIVE NUMBERS: negative modulo'
  steps:
  - send_line: echo $((-10 % 3))
  expect_output: '-1'
  match_type: contains
  auto_fixed: shell_execution
- name: '202. ARITHMETIC - NESTED EXPRESSIONS: nested arithmetic'
  steps:
  - send_line: echo $((1 + $((2 + 3))))
  expect_output: '6'
  match_type: contains
  auto_fixed: shell_execution
- name: '202. ARITHMETIC - NESTED EXPRESSIONS: deeply nested'
  steps:
  - send_line: echo $((1 + $((2 + $((3 + 4))))))
  expect_output: '10'
  match_type: contains
  auto_fixed: shell_execution
- name: '202. ARITHMETIC - NESTED EXPRESSIONS: nested with vars'
  steps:
  - send_line: a=5; echo $((a + $((a * 2))))
  expect_output: '15'
  match_type: contains
  auto_fixed: shell_execution
- name: '203. ARITHMETIC - COMMA OPERATOR: comma operator'
  steps:
  - send_line: echo $((1, 2, 3))
  expect_output: '3'
  match_type: contains
  auto_fixed: shell_execution
- name: '203. ARITHMETIC - COMMA OPERATOR: comma with assignment'
  steps:
  - send_line: echo $((a=1, b=2, a+b))
  expect_output: '3'
  match_type: contains
  auto_fixed: shell_execution
- name: '203. ARITHMETIC - COMMA OPERATOR: comma side effects'
  steps:
  - send_line: a=0; echo $((a=1, a=a+1, a))
  expect_output: '2'
  match_type: contains
  auto_fixed: shell_execution
- name: '210. WORD SPLITTING - EMPTY IFS: empty IFS no split'
  steps:
  - send_line: IFS=""; var="a b c"; set -- $var; echo $#
  expect_output: '1'
  match_type: contains
  auto_fixed: shell_execution
- name: '210. WORD SPLITTING - EMPTY IFS: empty IFS preserves spaces'
  steps:
  - send_line: IFS=""; var="a  b"; set -- $var; echo "$1"
  expect_output: a  b
  match_type: contains
  auto_fixed: shell_execution
- name: '211. WORD SPLITTING - IFS VARIATIONS: IFS whitespace only'
  steps:
  - send_line: IFS=" "; var="a  b"; set -- $var; echo $#
  expect_output: '2'
  match_type: contains
  auto_fixed: shell_execution
- name: '211. WORD SPLITTING - IFS VARIATIONS: IFS non-whitespace'
  steps:
  - send_line: IFS=":"; var="a:b:c"; set -- $var; echo $#
  expect_output: '3'
  match_type: contains
  auto_fixed: shell_execution
- name: '211. WORD SPLITTING - IFS VARIATIONS: IFS mixed'
  steps:
  - send_line: 'IFS=" :"; var="a : b"; set -- $var; echo $#'
  expect_output: '2'
  match_type: contains
  auto_fixed: shell_execution
- name: '211. WORD SPLITTING - IFS VARIATIONS: IFS tab'
  steps:
  - send_line: "IFS=$(printf '\\t'); var=$(printf 'a\\tb\\tc'); set -- $var; echo $#"
  expect_output: '3'
  match_type: contains
  auto_fixed: shell_execution
- name: '212. WORD SPLITTING - $@ VS $*: $* unquoted'
  steps:
  - send_line: set -- "a b" "c d"; for x in $*; do echo "[$x]"; done
  expect_output: '[a]'
  match_type: contains
  auto_fixed: shell_execution
- name: '212. WORD SPLITTING - $@ VS $*: $@ unquoted'
  steps:
  - send_line: set -- "a b" "c d"; for x in $@; do echo "[$x]"; done
  expect_output: '[a]'
  match_type: contains
  auto_fixed: shell_execution
- name: '212. WORD SPLITTING - $@ VS $*: $* quoted'
  steps:
  - send_line: set -- "a b" "c d"; for x in "$*"; do echo "[$x]"; done
  expect_output: '[a b c d]'
  match_type: contains
  auto_fixed: shell_execution
- name: '212. WORD SPLITTING - $@ VS $*: $@ quoted'
  steps:
  - send_line: set -- "a b" "c d"; for x in "$@"; do echo "[$x]"; done
  expect_output: '[a b]'
  match_type: contains
  auto_fixed: shell_execution
- name: '212. WORD SPLITTING - $@ VS $*: $* with IFS'
  steps:
  - send_line: IFS=:; set -- a b c; echo "$*"
  expect_output: a:b:c
  match_type: contains
  auto_fixed: shell_execution
- name: '212. WORD SPLITTING - $@ VS $*: $@ with IFS'
  steps:
  - send_line: IFS=:; set -- a b c; echo "$@"
  expect_output: a b c
  match_type: contains
  auto_fixed: shell_execution
- name: '220. PARAMETER EXPANSION - EMPTY VS UNSET: :+ empty var'
  steps:
  - send_line: var=""; echo "${var:+set}"
  expect_output: ''
  match_type: exact
- name: '220. PARAMETER EXPANSION - EMPTY VS UNSET: :+ unset var'
  steps:
  - send_line: unset var; echo "${var:+set}"
  expect_output: ''
  match_type: exact
- name: '220. PARAMETER EXPANSION - EMPTY VS UNSET: + empty var'
  steps:
  - send_line: var=""; echo "${var+set}"
  expect_output: set
  match_type: contains
  auto_fixed: shell_execution
- name: '220. PARAMETER EXPANSION - EMPTY VS UNSET: + unset var'
  steps:
  - send_line: unset var; echo "${var+set}"
  expect_output: ''
  match_type: exact
- name: '220. PARAMETER EXPANSION - EMPTY VS UNSET: :- empty var'
  steps:
  - send_line: var=""; echo "${var:-default}"
  expect_output: default
  match_type: contains
  auto_fixed: shell_execution
- name: '220. PARAMETER EXPANSION - EMPTY VS UNSET: - empty var'
  steps:
  - send_line: var=""; echo "${var-default}"
  expect_output: ''
  match_type: exact
- name: '221. PARAMETER EXPANSION - ASSIGNMENT FORMS: := assigns when empty'
  steps:
  - send_line: unset var; echo "${var:=default}"; echo "$var"
  expect_output: default
  match_type: contains
  auto_fixed: shell_execution
- name: '221. PARAMETER EXPANSION - ASSIGNMENT FORMS: = assigns when unset'
  steps:
  - send_line: unset var; echo "${var=default}"; echo "$var"
  expect_output: default
  match_type: contains
  auto_fixed: shell_execution
- name: '221. PARAMETER EXPANSION - ASSIGNMENT FORMS: := with empty'
  steps:
  - send_line: var=""; echo "${var:=default}"; echo "$var"
  expect_output: default
  match_type: contains
  auto_fixed: shell_execution
- name: '221. PARAMETER EXPANSION - ASSIGNMENT FORMS: = with empty'
  steps:
  - send_line: var=""; echo "${var=default}"; echo "$var"
  expect_output: ''
  match_type: exact
- name: '222. PARAMETER EXPANSION - PATTERN IN EXPANSION: nested pattern removal'
  steps:
  - send_line: suffix=.txt; file=test.txt; echo "${file%$suffix}"
  expect_output: test
  match_type: contains
  auto_fixed: shell_execution
- name: '222. PARAMETER EXPANSION - PATTERN IN EXPANSION: var in pattern'
  steps:
  - send_line: pat=t; var=test; echo "${var#$pat}"
  expect_output: est
  match_type: contains
  auto_fixed: shell_execution
- name: '222. PARAMETER EXPANSION - PATTERN IN EXPANSION: var in suffix pattern'
  steps:
  - send_line: pat=st; var=test; echo "${var%$pat}"
  expect_output: te
  match_type: contains
  auto_fixed: shell_execution
- name: '230. TRAP - IGNORE VS RESET: trap ignore'
  steps:
  - send_line: trap "" INT; trap; trap - INT; trap
  expect_output: trap -- '' SIGINT
  match_type: contains
  auto_fixed: shell_execution
- name: '230. TRAP - IGNORE VS RESET: trap reset'
  steps:
  - send_line: trap "echo caught" INT; trap - INT; trap
  expect_output: ''
  match_type: exact
- name: '230. TRAP - IGNORE VS RESET: trap empty string'
  steps:
  - send_line: trap "" EXIT; echo done
  expect_output: done
  match_type: contains
- name: '231. TRAP - IN SUBSHELLS: trap not inherited'
  steps:
  - send_line: trap "echo trap" EXIT; (trap); echo done
  expect_output: done
  match_type: contains
- name: '231. TRAP - IN SUBSHELLS: ignore trap inherited'
  steps:
  - send_line: trap "" INT; (trap)
  expect_output: trap -- '' SIGINT
  match_type: contains
  auto_fixed: shell_execution
- name: '232. TRAP - MULTIPLE SIGNALS: trap multiple'
  steps:
  - send_line: trap "echo exit" EXIT; trap "echo err" ERR 2>/dev/null || true; echo
      done
  expect_output: done
  match_type: contains
- name: '240. SET -e EDGE CASES: set -e with &&'
  steps:
  - send_line: set -e; false && true; echo reached
  expect_output: reached
  match_type: contains
- name: '240. SET -e EDGE CASES: set -e with ||'
  steps:
  - send_line: set -e; false || true; echo reached
  expect_output: reached
  match_type: contains
- name: '240. SET -e EDGE CASES: set -e with !'
  steps:
  - send_line: set -e; ! false; echo reached
  expect_output: reached
  match_type: contains
- name: '240. SET -e EDGE CASES: set -e in if condition'
  steps:
  - send_line: set -e; if false; then echo no; fi; echo reached
  expect_output: reached
  match_type: contains
- name: '240. SET -e EDGE CASES: set -e in while condition'
  steps:
  - send_line: set -e; while false; do echo no; done; echo reached
  expect_output: reached
  match_type: contains
- name: '241. SET -e IN SUBSHELLS: set -e inherited'
  steps:
  - send_line: set -e; (false; echo no) || echo caught
  expect_output: caught
  match_type: contains
- name: '241. SET -e IN SUBSHELLS: set -e in command sub'
  steps:
  - send_line: set -e; x=$(false; echo yes); echo "x=$x"
  expect_output: ''
  match_type: exact
- name: '242. COMMAND NOT FOUND: command not found status'
  steps:
  - send_line: $test_cmd
  expect_output: ''
  match_type: exact
- name: '250. FUNCTION - BUILTIN SHADOWING: function shadows builtin'
  steps:
  - send_line: 'echo() { printf "custom: %s\n" "$1"; }; echo test; unset -f echo'
  expect_output: 'custom: test'
  match_type: contains
  auto_fixed: shell_execution
- name: '250. FUNCTION - BUILTIN SHADOWING: function named cd'
  steps:
  - send_line: cd() { echo "custom cd"; }; cd /tmp; unset -f cd
  expect_output: custom cd
  match_type: contains
  auto_fixed: shell_execution
- name: '251. FUNCTION - REDEFINITION: redefine function'
  steps:
  - send_line: f() { echo v1; }; f; f() { echo v2; }; f
  expect_output: v1
  match_type: contains
  auto_fixed: shell_execution
- name: '252. FUNCTION - INDIRECT RECURSION: mutual recursion'
  steps:
  - send_line: a() { [ $1 -le 0 ] && echo done || b $(($1-1)); }; b() { a $1; }; a
      3
  expect_output: done
  match_type: contains
  auto_fixed: shell_execution
- name: '253. FUNCTION - RETURN EDGE CASES: return outside function'
  steps:
  - send_line: (return 5 2>/dev/null); echo $?
  expect_output: '2'
  match_type: contains
  auto_fixed: shell_execution
- name: '253. FUNCTION - RETURN EDGE CASES: return in sourced file'
  steps:
  - send_line: echo "return 42" > /tmp/ret.sh; . /tmp/ret.sh; echo $?; rm /tmp/ret.sh
  expect_output: '42'
  match_type: contains
  auto_fixed: shell_execution
- name: '260. REDIRECTION - CLOSED FD OPERATIONS: write to closed fd'
  steps:
  - send_line: exec 3>&-; echo test >&3 2>&1 | head -1
  expect_output: Bad file descriptor
  match_type: contains
- name: '260. REDIRECTION - CLOSED FD OPERATIONS: read from closed fd'
  steps:
  - send_line: exec 3<&-; cat <&3 2>&1 | head -1
  expect_output: ''
  match_type: exact
- name: '262. REDIRECTION - NOCLOBBER WITH APPEND: noclobber allows append'
  steps:
  - send_line: set -C; echo a > /tmp/nc_test; echo b >> /tmp/nc_test; cat /tmp/nc_test; rm /tmp/nc_test
  expect_output: a
  match_type: contains
  auto_fixed: shell_execution
- name: '270. PIPELINE - BUILTIN ONLY: pipeline all builtins'
  steps:
  - send_line: 'echo test | { read x; echo "got: $x"; }'
  expect_output: 'got: test'
  match_type: contains
  auto_fixed: shell_execution
- name: '270. PIPELINE - BUILTIN ONLY: pipeline with :'
  steps:
  - send_line: ': | echo piped'
  expect_output: piped
  match_type: contains
  auto_fixed: shell_execution
- name: '271. PIPELINE - LONG CHAINS: 5-stage pipeline'
  steps:
  - send_line: echo test | cat | cat | cat | cat | cat
  expect_output: test
  match_type: contains
- name: '271. PIPELINE - LONG CHAINS: pipeline with failures'
  steps:
  - send_line: echo ok | false | cat; echo $?
  expect_output: '0'
  match_type: contains
  auto_fixed: shell_execution
- name: '280. ALIAS - SPECIAL CASES: alias with quotes'
  steps:
  - send_line: alias greet='echo hello'; greet; unalias greet
  expect_output: ''
  match_type: exact
- name: '280. ALIAS - SPECIAL CASES: alias with semicolon'
  steps:
  - send_line: alias both='echo a; echo b'; both; unalias both
  expect_output: ''
  match_type: exact
- name: '280. ALIAS - SPECIAL CASES: alias -p format'
  steps:
  - send_line: alias foo=bar; alias -p | grep foo; unalias foo
  expect_output: alias foo='bar'
  match_type: contains
  auto_fixed: shell_execution
- name: '281. ALIAS - EXPANSION CONTEXT: alias in function'
  steps:
  - send_line: alias e=echo; f() { e test; }; f; unalias e
  expect_output: ''
  match_type: exact
- name: '290. DOT - PATH HANDLING: dot with arguments'
  steps:
  - send_line: 'echo "echo sourced" > /tmp/src.sh; . /tmp/src.sh; rm /tmp/src.sh'
  expect_output: 'sourced'
  match_type: contains
  auto_fixed: shell_execution
- name: '290. DOT - PATH HANDLING: dot return value'
  steps:
  - send_line: echo "false" > /tmp/src.sh; . /tmp/src.sh; echo $?; rm /tmp/src.sh
  expect_output: '1'
  match_type: contains
  auto_fixed: shell_execution
- name: '290. DOT - PATH HANDLING: dot modifies vars'
  steps:
  - send_line: echo "X=modified" > /tmp/src.sh; X=original; . /tmp/src.sh; echo $X;
      rm /tmp/src.sh
  expect_output: modified
  match_type: contains
  auto_fixed: shell_execution
- name: '300. SPECIAL BUILTINS - ERROR BEHAVIOR: break outside loop'
  steps:
  - send_line: (break 2>/dev/null); echo $?
  expect_output: '0'
  match_type: contains
  auto_fixed: shell_execution
- name: '300. SPECIAL BUILTINS - ERROR BEHAVIOR: continue outside loop'
  steps:
  - send_line: (continue 2>/dev/null); echo $?
  expect_output: '0'
  match_type: contains
  auto_fixed: shell_execution
- name: '300. SPECIAL BUILTINS - ERROR BEHAVIOR: colon with redirect'
  steps:
  - send_line: ': > /tmp/colon_test; test -f /tmp/colon_test && echo exists; rm /tmp/colon_test'
  expect_output: exists
  match_type: contains
  auto_fixed: shell_execution
- name: '310. ENVIRONMENT - PATH HANDLING: empty PATH component'
  steps:
  - send_line: echo "echo found" > /tmp/pathtest; chmod +x /tmp/pathtest; PATH="/tmp:$PATH"
      pathtest; rm /tmp/pathtest
  expect_output: found
  match_type: contains
  auto_fixed: shell_execution
- name: '311. ENVIRONMENT - EXPORT BEHAVIOR: export in subshell'
  steps:
  - send_line: X=1; (export X=2); echo $X
  expect_output: '1'
  match_type: contains
  auto_fixed: shell_execution
- name: '311. ENVIRONMENT - EXPORT BEHAVIOR: export preserves'
  steps:
  - send_line: export X=1; X=2; sh -c "echo $X"
  expect_output: '2'
  match_type: contains
  auto_fixed: shell_execution
- name: '320. GLOB - SPECIAL FILENAMES: glob with spaces'
  steps:
  - send_line: mkdir -p /tmp/gt; touch "/tmp/gt/a b"; echo /tmp/gt/*; rm -r /tmp/gt
  expect_output: /tmp/gt/a b
  match_type: contains
  auto_fixed: shell_execution
- name: '320. GLOB - SPECIAL FILENAMES: glob no match'
  steps:
  - send_line: echo /nonexistent/path/*.xyz 2>/dev/null
  expect_output: '/nonexistent/path/\*.xyz'
  match_type: regex
- name: '321. GLOB - CHARACTER CLASSES: glob [:alpha:]'
  steps:
  - send_line: mkdir -p /tmp/gc; touch /tmp/gc/a1 /tmp/gc/1a; echo /tmp/gc/[[:alpha:]]*;
      rm -r /tmp/gc
  expect_output: /tmp/gc/a1
  match_type: contains
  auto_fixed: shell_execution
- name: '321. GLOB - CHARACTER CLASSES: glob [:digit:]'
  steps:
  - send_line: mkdir -p /tmp/gc; touch /tmp/gc/a1 /tmp/gc/1a; echo /tmp/gc/[[:digit:]]*;
      rm -r /tmp/gc
  expect_output: /tmp/gc/1a
  match_type: contains
  auto_fixed: shell_execution
- name: '330. QUOTING - COMPLEX NESTING: quotes in command sub'
  steps:
  - send_line: echo "$(echo "inner")"
  expect_output: inner
  match_type: contains
  auto_fixed: shell_execution
- name: '330. QUOTING - COMPLEX NESTING: escaped quotes'
  steps:
  - send_line: echo "say \"hello\""
  expect_output: say "hello"
  match_type: contains
- name: '330. QUOTING - COMPLEX NESTING: single in double'
  steps:
  - send_line: echo "it's fine"
  expect_output: "it's fine"
  match_type: contains
- name: '330. QUOTING - COMPLEX NESTING: backslash in single'
  steps:
  - send_line: echo 'back\\slash'
  expect_output: 'back\\\\slash'
  match_type: regex
- name: '331. QUOTING - EMPTY STRINGS: empty preserves arg'
  steps:
  - send_line: set -- "" "a"; echo $#
  expect_output: '2'
  match_type: contains
  auto_fixed: shell_execution
- name: '331. QUOTING - EMPTY STRINGS: unquoted empty gone'
  steps:
  - send_line: e=""; set -- $e a; echo $#
  expect_output: '1'
  match_type: contains
  auto_fixed: shell_execution
- name: '340. MISC - COMPOUND COMMANDS: if with compound cond'
  steps:
  - send_line: if true && true; then echo yes; fi
  expect_output: 'yes'
  match_type: contains
  auto_fixed: shell_execution
- name: '340. MISC - COMPOUND COMMANDS: while with pipeline cond'
  steps:
  - send_line: n=0; while echo $n | grep -q 0 && [ $n -lt 1 ]; do n=$((n+1)); done;
      echo $n
  expect_output: '1'
  match_type: contains
  auto_fixed: shell_execution
- name: '341. MISC - COMPLEX COMBINATIONS: redirect in loop'
  steps:
  - send_line: for i in 1 2 3; do echo $i; done > /tmp/loop_out; cat /tmp/loop_out; rm /tmp/loop_out
  expect_output: '1'
  match_type: contains
  auto_fixed: shell_execution
- name: '341. MISC - COMPLEX COMBINATIONS: case with patterns'
  steps:
  - send_line: x=abc; case $x in a*) echo match;; esac
  expect_output: match
  match_type: contains
  auto_fixed: shell_execution