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lix/tests/check.sh
John Ericson c11836126b Harden tests' bash
Use `set -u` and `set -o pipefail` to catch accidental mistakes and
failures more strongly.

 - `set -u` catches the use of undefined variables
 - `set -o pipefail` catches failures (like `set -e`) earlier in the
   pipeline.

This makes the tests a bit more robust. It is nice to read code not
worrying about these spurious success paths (via uncaught) errors
undermining the tests. Indeed, I caught some bugs doing this.

There are a few tests where we run a command that should fail, and then
search its output to make sure the failure message is one that we
expect. Before, since the `grep` was the last command in the pipeline
the exit code of those failing programs was silently ignored. Now with
`set -o pipefail` it won't be, and we have to do something so the
expected failure doesn't accidentally fail the test.

To do that we use `expect` and a new `expectStderr` to check for the
exact failing exit code. See the comments on each for why.

`grep -q` is replaced with `grepQuiet`, see the comments on that
function for why.

`grep -v` when we just want the exit code is replaced with `grepInverse,
see the comments on that function for why.

`grep -q -v` together is, surprise surprise, replaced with
`grepQuietInverse`, which is both combined.

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-03-08 10:26:30 -05:00

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source common.sh
# XXX: This shouldnt be, but #4813 cause this test to fail
buggyNeedLocalStore "see #4813"
checkBuildTempDirRemoved ()
{
buildDir=$(sed -n 's/CHECK_TMPDIR=//p' $1 | head -1)
checkBuildIdFile=${buildDir}/checkBuildId
[[ ! -f $checkBuildIdFile ]] || ! grep $checkBuildId $checkBuildIdFile
}
# written to build temp directories to verify created by this instance
checkBuildId=$(date +%s%N)
clearStore
nix-build dependencies.nix --no-out-link
nix-build dependencies.nix --no-out-link --check
# check for dangling temporary build directories
# only retain if build fails and --keep-failed is specified, or...
# ...build is non-deterministic and --check and --keep-failed are both specified
nix-build check.nix -A failed --argstr checkBuildId $checkBuildId \
--no-out-link 2> $TEST_ROOT/log || status=$?
[ "$status" = "100" ]
checkBuildTempDirRemoved $TEST_ROOT/log
nix-build check.nix -A failed --argstr checkBuildId $checkBuildId \
--no-out-link --keep-failed 2> $TEST_ROOT/log || status=$?
[ "$status" = "100" ]
if checkBuildTempDirRemoved $TEST_ROOT/log; then false; fi
nix-build check.nix -A deterministic --argstr checkBuildId $checkBuildId \
--no-out-link 2> $TEST_ROOT/log
checkBuildTempDirRemoved $TEST_ROOT/log
nix-build check.nix -A deterministic --argstr checkBuildId $checkBuildId \
--no-out-link --check --keep-failed 2> $TEST_ROOT/log
if grepQuiet 'may not be deterministic' $TEST_ROOT/log; then false; fi
checkBuildTempDirRemoved $TEST_ROOT/log
nix-build check.nix -A nondeterministic --argstr checkBuildId $checkBuildId \
--no-out-link 2> $TEST_ROOT/log
checkBuildTempDirRemoved $TEST_ROOT/log
nix-build check.nix -A nondeterministic --argstr checkBuildId $checkBuildId \
--no-out-link --check 2> $TEST_ROOT/log || status=$?
grep 'may not be deterministic' $TEST_ROOT/log
[ "$status" = "104" ]
checkBuildTempDirRemoved $TEST_ROOT/log
nix-build check.nix -A nondeterministic --argstr checkBuildId $checkBuildId \
--no-out-link --check --keep-failed 2> $TEST_ROOT/log || status=$?
grep 'may not be deterministic' $TEST_ROOT/log
[ "$status" = "104" ]
if checkBuildTempDirRemoved $TEST_ROOT/log; then false; fi
clearStore
path=$(nix-build check.nix -A fetchurl --no-out-link)
chmod +w $path
echo foo > $path
chmod -w $path
nix-build check.nix -A fetchurl --no-out-link --check
# Note: "check" doesn't repair anything, it just compares to the hash stored in the database.
[[ $(cat $path) = foo ]]
nix-build check.nix -A fetchurl --no-out-link --repair
[[ $(cat $path) != foo ]]
echo 'Hello World' > $TEST_ROOT/dummy
nix-build check.nix -A hashmismatch --no-out-link || status=$?
[ "$status" = "102" ]
echo -n > $TEST_ROOT/dummy
nix-build check.nix -A hashmismatch --no-out-link
echo 'Hello World' > $TEST_ROOT/dummy
nix-build check.nix -A hashmismatch --no-out-link --check || status=$?
[ "$status" = "102" ]
# Multiple failures with --keep-going
nix-build check.nix -A nondeterministic --no-out-link
nix-build check.nix -A nondeterministic -A hashmismatch --no-out-link --check --keep-going || status=$?
[ "$status" = "110" ]