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Use head instead of dd in the read test

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The read test is now failing on GitHub actions even though it passes on
my Mac. It may be due to differences in dd between these two
environments. Stop using dd and just use head.
This commit is contained in:
ridiculousfish 2022-04-02 13:23:51 -07:00
parent 108fe574a0
commit 448dd18685
1 changed files with 3 additions and 5 deletions
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8
tests/checks/read.fish
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@ -192,7 +192,7 @@ set line abcdefghijklmnopqrstuvwxyz
# Ensure the `read` command terminates if asked to read too much data. The var
# should be empty. We throw away any data we read if it exceeds the limit on
# what we consider reasonable.
yes $line | dd iflag=fullblock bs=1024 count=(math "1 + $fish_read_limit / 1024") 2>/dev/null | read --null x
yes $line | head -c (math "1 + $fish_read_limit") | read --null x
if test $status -ne 122
echo reading too much data did not terminate with failure status
end
@ -239,14 +239,12 @@ end
# Same as previous test but limit the amount of data fed to `read` rather than
# using the `--nchars` flag.
yes $line | dd iflag=fullblock bs=1024 count=(math "$fish_read_limit / 1024") 2>/dev/null | read --null x
yes $line | head -c $fish_read_limit | read --null x
if test $status -ne 0
echo the read of the max amount of data failed unexpectedly
end
if test (string length "$x") -ne $fish_read_limit
# See how much data 'yes' produced.
set yeslen (yes $line | dd iflag=fullblock bs=1024 count=(math "$fish_read_limit / 1024") 2>/dev/null | wc -c | tr -d " \t\n\r")
echo reading the max amount of data with --nchars failed the length test. read: (string length "$x"), limit: $fish_read_limit, yes produced: $yeslen
echo reading with a limited amount of input data failed the length test
end
# Confirm reading non-interactively works -- \#4206 regression