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tests: bonsai/dj.sh: iron out some existing tests

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This commit is contained in:
dtb 2024-07-08 22:25:18 -06:00
parent aa819cabc2
commit 94873a2ddc
Signed by: trinity
GPG Key ID: 34C0543BBB6AF81B
1 changed files with 14 additions and 12 deletions
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26
tests/bonsai/dj.sh
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@ -11,17 +11,19 @@
! dj -h
# This test is theoretically Linux-dependent; write(2) should return -1 on
# error.
# Right now dj(1) interprets the return value of write(2) as the amount of
# bytes written. This can decrement the stored quantity of bytes written,
# which is an int, so doesn't underflow but goes negative. dj(1) tries to
# again to write(2) if an error occurs in which no bytes are written, so in
# total two write(2)s are attempted and so the written byte quantity is -2.
# This is a bug and will change, but for now is at least documented.
dj -Hi /dev/zero -o /dev/full \
| xargs -I out "$BIN/strcmp" '1+0 > 0+0; 1024 > -2' out
# Linux has a /dev/full pseudodevice useful for testing errors.
case "$(uname)" in
Linux)
dj -Hi /dev/zero -o /dev/full 2>&1 \
| xargs -I out "$BIN"/strcmp '1+0 > 0+0; 1024 > 0' out
;;
esac
# Read nothing from /dev/null, write nothing to /dev/null.
dj -Hi /dev/null -o /dev/null \
| xargs -I out "$BIN/strcmp" '0+0 > 0+0; 0 > 0' out
dj -Hi /dev/null -o /dev/null 2>&1 \
| xargs -I out "$BIN"/strcmp '0+0 > 0+0; 0 > 0' out
# Test skipping stdin.
#dd count=1 bs=1024 </dev/zero 2>/dev/null \
# | dj -H -s 24 -o /dev/null 2>&1 \
# | xargs -I out "$BIN"/strcmp '1+0 > 1+0; 1024 > 1000' out