| #!/bin/bash |
| |
| [ -f testing.sh ] && . testing.sh |
| |
| #testing "name" "command" "result" "infile" "stdin" |
| |
| testing "xargs" "xargs && echo yes" "hello\nyes\n" "" "hello" |
| testing "spaces" "xargs" \ |
| "one two three four\n" "" "one two\tthree \nfour\n\n" |
| |
| testing "-n 0" "xargs -n 0 2>/dev/null || echo ok" "ok\n" \ |
| "" "one \ntwo\n three" |
| testing "-n 1" "xargs -n 1" "one\n" "" "one\n" |
| testing "-n 2" "xargs -n 2" "one two\nthree\n" "" "one \ntwo\n three" |
| testing "-n exact match" "xargs -n 3" "one two three\n" "" "one two three" |
| testing "xargs2" "xargs -n2" "one two\nthree four\nfive\n" "" \ |
| "one two three four five" |
| testing "-s too long" "xargs -s 9 echo 2>/dev/null; echo \$?" \ |
| "one\ntwo\n1\n" "" "one two three" |
| testing "-s 13" "xargs -s 13 echo" "one two\nthree\n" "" "one \ntwo\n three" |
| testing "-s 12" "xargs -s 12 echo" "one\ntwo\nthree\n" "" "one \ntwo\n three" |
| # Check that we're accounting for the command *and* its arguments correctly. |
| testing "-s counts args" "xargs -s 13 echo ' ' ' '" " one\n" "" "one\n" |
| # 5 is the minimum allowed for the default "echo". |
| testing "-s 4 fails" "xargs -s 4 2>/dev/null || echo bad" "bad\n" "" "" |
| testing "-s 5 no input okay" "xargs -s 5" "\n" "" "" |
| testing "-s 5 with input bad" "xargs -s 5 2>/dev/null || echo bad" "bad\n" \ |
| "" "a\n" |
| |
| touch one two three |
| testing "command -opt" "xargs -n2 ls -1" "one\ntwo\nthree\n" "" \ |
| "one two three" |
| rm one two three |
| |
| testing "-0 -n1" "printf 'a\0b\0c\0d\0e\0f' | xargs -0 -n1 echo _" "_ a\n_ b\n_ c\n_ d\n_ e\n_ f\n" "" "" |
| testing "-0 -n2" "printf 'a\0b\0c\0d\0e\0f' | xargs -0 -n2 echo _" "_ a b\n_ c d\n_ e f\n" "" "" |
| |
| testing "-t" "xargs -t 2>stderr ; cat stderr ; rm stderr" "one two\necho one two \n" "" "one\ntwo\n" |
| |
| testing "-E END" "xargs -E END" "a b ENDE\n" "" "a\nb\nENDE\nEND\nc\nd\n" |
| |
| testing "-r" "xargs -r echo x" "" "" "" |
| testing "no -r" "xargs echo x" "x\n" "" "" |
| |
| # Exit value madness. 0 and 126/127 are normal. |
| testing "true" "xargs true; echo \$?" "0\n" "" "" |
| testing "command not found" "xargs does-not-exist 2>/dev/null; echo \$?" \ |
| "127\n" "" "" |
| # But 1-125 are flattened to 123. |
| testing "false" "xargs false; echo \$?" "123\n" "" "" |
| # 255 is special "abort early" magic. |
| testing "exit 255" "xargs sh -c 'exit 255' 2>&1; echo \$?" \ |
| "xargs: sh: exited with status 255; aborting\n124\n" "" "" |
| |
| # findutils maxes out at 131066 (they do the math wrong), kernel takes 131071. |
| toyonly testing "max argument size" \ |
| "head -c 131071 /dev/zero | tr '\0' x | xargs | wc -c" "131072\n" "" "" |
| X=$(head -c 131066 /dev/zero | tr '\0' x) |
| # This goes over the kernel's 10 meg limit |
| testing "big input forces split" \ |
| 'for i in $(seq 1 100);do echo $X;done|{ xargs >/dev/null && echo yes;}' \ |
| "yes\n" "" "" |
| |
| # -P max-proc |
| testing "max-proc=1" "xargs -n 1 -P 1" "one\ntwo\nthree\n" "" "one\ntwo\nthree\n" |
| testing "max-proc=2" "xargs -n 1 -P 2" "y\ny\ny\n" "" "y\ny\ny\n" |
| testing "max-proc=3" "xargs -n 1 -P 3" "y\ny\ny\n" "" "y\ny\ny\n" |
| # 3 seconds vs 2 seconds vs 1 second parallel sleep |
| testing "parallel sleep" " |
| xargs_sleep() { |
| ( yes | head -3 | tr y 1 | time -p xargs -n 1 \${*} sleep ) 2>&1 | |
| sed -n 's/^real *\([0-9]*\)[.]\(.*\)/\1\2/p' |
| } && |
| A=\`xargs_sleep\` && |
| B=\`xargs_sleep -P 2\` && |
| C=\`xargs_sleep -P 0\` && |
| [ \${A} -gt \${B} -a \${B} -gt \${C} ] && echo OK || echo FAIL" "OK\n" "" "" |
| |
| # TODO: what exactly is -x supposed to do? why does coreutils output "one"? |
| #testing "-x" "xargs -x -s 9 || echo expected" "one\nexpected\n" "" "one\ntwo\nthree" |
| |
| # TODO: test for -L? what exactly is the difference between -n and -L? |
| |
| #testing "-n exact match" |
| #testing "-s exact match" |
| #testing "-s impossible" |