# readonly-y.sh: yash-specific test of the readonly built-in test_O -d -e n 'making PWD read-only is rejected' -o portable readonly PWD echo not reached __IN__ test_O -d -e n 'making OLDPWD read-only is rejected' -o portable readonly OLDPWD echo not reached __IN__ test_O -d -e n 'making OPTIND read-only is rejected' -o portable readonly OPTIND echo not reached __IN__ test_O -d -e n 'making OPTARG read-only is rejected' -o portable readonly OPTARG echo not reached __IN__ test_O -d -e n 'making LINENO read-only is rejected' -o portable readonly LINENO echo not reached __IN__ test_O -d -e n 'making PWD read-only with a value is rejected' -o portable readonly PWD=/tmp echo not reached __IN__ test_oE 'readonly error message names the rejected variable' -o portable (readonly PWD) 2>result grep -Fq 'PWD' result && echo shown __IN__ shown __OUT__ # The readonly built-in is a special built-in, so its error would terminate # the shell. The command built-in is used to keep the shell running and # observe what the rejected readonly built-in did. test_oE 'rejected readonly still assigns the value to PWD' -o portable command readonly PWD=/somewhere 2>/dev/null echo "status=$?" echo "PWD=$PWD" __IN__ status=1 PWD=/somewhere __OUT__ test_oE 'rejected readonly leaves PWD writable' -o portable command readonly PWD=/somewhere 2>/dev/null PWD=/elsewhere echo "PWD=$PWD" __IN__ PWD=/elsewhere __OUT__ test_OE -e 0 'readonly can make PWD read-only without the portable option' readonly PWD __IN__ test_O -d -e n 'readonly rejects non-portable variable name' -o portable readonly foo-bar echo not reached __IN__ test_O -d -e n 'readonly rejects non-portable variable name with a value' -o portable readonly foo-bar=1 echo not reached __IN__ test_oE 'readonly error message names the non-portable variable name' -o portable (readonly foo-bar) 2>result grep -Fq 'foo-bar' result && echo shown __IN__ shown __OUT__ test_OE -e 0 'readonly accepts non-portable variable name without the portable option' readonly foo-bar=1 __IN__ test_O -d -e n 'readonly rejects missing operand' -o portable readonly echo not reached __IN__ test_O -d -e n 'readonly rejects operand with the -p option' -o portable readonly foo=bar readonly -p foo echo not reached __IN__ test_oE 'readonly error message mentions the portable option' -o portable (readonly) 2>result grep -Fq portable result && echo shown __IN__ shown __OUT__ test_oE 'readonly error message names the unexpected operand' -o portable readonly foo=bar (readonly -p foo) 2>result grep -Fq foo result && echo shown __IN__ shown __OUT__ test_oE -e 0 'readonly accepts the -p option without operands' -o portable readonly foo=bar readonly -p | grep -Fx 'readonly foo=bar' __IN__ readonly foo=bar __OUT__ test_oE -e 0 'readonly accepts operands without the -p option' -o portable readonly foo=bar echo "$foo" __IN__ bar __OUT__ test_oE -e 0 'readonly accepts missing operand without the portable option' readonly foo=bar readonly | grep -Fx 'readonly foo=bar' __IN__ readonly foo=bar __OUT__ test_oE -e 0 'readonly accepts operand with the -p option without the portable option' readonly foo=bar readonly -p foo __IN__ readonly foo=bar __OUT__ test_O -d -e n 'readonly rejects long option name' -o portable readonly --print echo not reached __IN__ test_O -d -e n 'readonly rejects abbreviated long option name' -o portable readonly --p echo not reached __IN__ test_oE 'readonly long option error message mentions the portable option' -o portable (readonly --print) 2>result grep -Fq portable result && echo shown __IN__ shown __OUT__ test_oE -e 0 'readonly accepts long option name without the portable option' readonly foo=bar readonly --print foo __IN__ readonly foo=bar __OUT__ test_oE 'readonly ++print error message does not blame the portable option' -o portable (readonly ++print) 2>result grep -Fq portable result || echo not shown __IN__ not shown __OUT__ test_oE -e 0 'help option prints help without exiting the shell' readonly --help echo $? __IN__ readonly: make variables read-only Usage: readonly NAME[=VALUE]... readonly -p [NAME...] readonly Options: -p, --print print the current definitions --help print this help See for details. 0 __OUT__ test_OE -e 0 'help built-in prints the same help as the help option' readonly --help >help_option help readonly >help_builtin diff help_option help_builtin __IN__ test_OE -e 0 'help option can be abbreviated and followed by a separator' readonly --he >/dev/null && readonly --help -- >/dev/null __IN__ test_O -d -e 2 'help option with another option' readonly --help -p __IN__ test_O -d -e 2 'help option with an operand' readonly --help foo __IN__ test_O -d -e 2 'help option with an operand after a separator' readonly --help -- foo __IN__ test_O -d -e 2 'help option cannot be negated' readonly ++help __IN__