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lix/tests/binary-cache.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
needLocalStore "'--no-require-sigs' can’t be used with the daemon"
# We can produce drvs directly into the binary cache
clearStore
clearCacheCache
nix-instantiate --store "file://$cacheDir" dependencies.nix
# Create the binary cache.
clearStore
clearCache
outPath=$(nix-build dependencies.nix --no-out-link)
nix copy --to file://$cacheDir $outPath
# Test copying build logs to the binary cache.
expect 1 nix log --store file://$cacheDir $outPath 2>&1 | grep 'is not available'
nix store copy-log --to file://$cacheDir $outPath
nix log --store file://$cacheDir $outPath | grep FOO
rm -rf $TEST_ROOT/var/log/nix
expect 1 nix log $outPath 2>&1 | grep 'is not available'
nix log --substituters file://$cacheDir $outPath | grep FOO
# Test copying build logs from the binary cache.
nix store copy-log --from file://$cacheDir $(nix-store -qd $outPath)^'*'
nix log $outPath | grep FOO
basicDownloadTests() {
# No uploading tests bcause upload with force HTTP doesn't work.
# By default, a binary cache doesn't support "nix-env -qas", but does
# support installation.
clearStore
clearCacheCache
nix-env --substituters "file://$cacheDir" -f dependencies.nix -qas \* | grep -- "---"
nix-store --substituters "file://$cacheDir" --no-require-sigs -r $outPath
[ -x $outPath/program ]
# But with the right configuration, "nix-env -qas" should also work.
clearStore
clearCacheCache
echo "WantMassQuery: 1" >> $cacheDir/nix-cache-info
nix-env --substituters "file://$cacheDir" -f dependencies.nix -qas \* | grep -- "--S"
nix-env --substituters "file://$cacheDir" -f dependencies.nix -qas \* | grep -- "--S"
x=$(nix-env -f dependencies.nix -qas \* --prebuilt-only)
[ -z "$x" ]
nix-store --substituters "file://$cacheDir" --no-require-sigs -r $outPath
nix-store --check-validity $outPath
nix-store -qR $outPath | grep input-2
echo "WantMassQuery: 0" >> $cacheDir/nix-cache-info
}
# Test LocalBinaryCacheStore.
basicDownloadTests
# Test HttpBinaryCacheStore.
export _NIX_FORCE_HTTP=1
basicDownloadTests
# Test whether Nix notices if the NAR doesn't match the hash in the NAR info.
clearStore
nar=$(ls $cacheDir/nar/*.nar.xz | head -n1)
mv $nar $nar.good
mkdir -p $TEST_ROOT/empty
nix-store --dump $TEST_ROOT/empty | xz > $nar
expect 1 nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result 2>&1 | tee $TEST_ROOT/log
grepQuiet "hash mismatch" $TEST_ROOT/log
mv $nar.good $nar
# Test whether this unsigned cache is rejected if the user requires signed caches.
clearStore
clearCacheCache
if nix-store --substituters "file://$cacheDir" -r $outPath; then
echo "unsigned binary cache incorrectly accepted"
exit 1
fi
# Test whether fallback works if a NAR has disappeared. This does not require --fallback.
clearStore
mv $cacheDir/nar $cacheDir/nar2
nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result
mv $cacheDir/nar2 $cacheDir/nar
# Test whether fallback works if a NAR is corrupted. This does require --fallback.
clearStore
mv $cacheDir/nar $cacheDir/nar2
mkdir $cacheDir/nar
for i in $(cd $cacheDir/nar2 && echo *); do touch $cacheDir/nar/$i; done
(! nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result)
nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result --fallback
rm -rf $cacheDir/nar
mv $cacheDir/nar2 $cacheDir/nar
# Test whether building works if the binary cache contains an
# incomplete closure.
clearStore
rm -v $(grep -l "StorePath:.*dependencies-input-2" $cacheDir/*.narinfo)
nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result 2>&1 | tee $TEST_ROOT/log
grepQuiet "copying path.*input-0" $TEST_ROOT/log
grepQuiet "copying path.*input-2" $TEST_ROOT/log
grepQuiet "copying path.*top" $TEST_ROOT/log
# Idem, but without cached .narinfo.
clearStore
clearCacheCache
nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result 2>&1 | tee $TEST_ROOT/log
grepQuiet "don't know how to build" $TEST_ROOT/log
grepQuiet "building.*input-1" $TEST_ROOT/log
grepQuiet "building.*input-2" $TEST_ROOT/log
grepQuiet "copying path.*input-0" $TEST_ROOT/log
grepQuiet "copying path.*top" $TEST_ROOT/log
# Create a signed binary cache.
clearCache
clearCacheCache
nix key generate-secret --key-name test.nixos.org-1 > $TEST_ROOT/sk1
publicKey=$(nix key convert-secret-to-public < $TEST_ROOT/sk1)
nix key generate-secret --key-name test.nixos.org-1 > $TEST_ROOT/sk2
badKey=$(nix key convert-secret-to-public < $TEST_ROOT/sk2)
nix key generate-secret --key-name foo.nixos.org-1 > $TEST_ROOT/sk3
otherKey=$(nix key convert-secret-to-public < $TEST_ROOT/sk3)
_NIX_FORCE_HTTP= nix copy --to file://$cacheDir?secret-key=$TEST_ROOT/sk1 $outPath
# Downloading should fail if we don't provide a key.
clearStore
clearCacheCache
(! nix-store -r $outPath --substituters "file://$cacheDir")
# And it should fail if we provide an incorrect key.
clearStore
clearCacheCache
(! nix-store -r $outPath --substituters "file://$cacheDir" --trusted-public-keys "$badKey")
# It should succeed if we provide the correct key.
nix-store -r $outPath --substituters "file://$cacheDir" --trusted-public-keys "$otherKey $publicKey"
# It should fail if we corrupt the .narinfo.
clearStore
cacheDir2=$TEST_ROOT/binary-cache-2
rm -rf $cacheDir2
cp -r $cacheDir $cacheDir2
for i in $cacheDir2/*.narinfo; do
grep -v References $i > $i.tmp
mv $i.tmp $i
done
clearCacheCache
(! nix-store -r $outPath --substituters "file://$cacheDir2" --trusted-public-keys "$publicKey")
# If we provide a bad and a good binary cache, it should succeed.
nix-store -r $outPath --substituters "file://$cacheDir2 file://$cacheDir" --trusted-public-keys "$publicKey"
unset _NIX_FORCE_HTTP
# Test 'nix verify --all' on a binary cache.
nix store verify -vvvvv --all --store file://$cacheDir --no-trust
# Test local NAR caching.
narCache=$TEST_ROOT/nar-cache
rm -rf $narCache
mkdir $narCache
[[ $(nix store cat --store "file://$cacheDir?local-nar-cache=$narCache" $outPath/foobar) = FOOBAR ]]
rm -rfv "$cacheDir/nar"
[[ $(nix store cat --store "file://$cacheDir?local-nar-cache=$narCache" $outPath/foobar) = FOOBAR ]]
(! nix store cat --store file://$cacheDir $outPath/foobar)
# Test NAR listing generation.
clearCache
outPath=$(nix-build --no-out-link -E '
with import ./config.nix;
mkDerivation {
name = "nar-listing";
buildCommand = "mkdir $out; echo foo > $out/bar; ln -s xyzzy $out/link";
}
')
nix copy --to file://$cacheDir?write-nar-listing=1 $outPath
diff -u \
<(jq -S < $cacheDir/$(basename $outPath | cut -c1-32).ls) \
<(echo '{"version":1,"root":{"type":"directory","entries":{"bar":{"type":"regular","size":4,"narOffset":232},"link":{"type":"symlink","target":"xyzzy"}}}}' | jq -S)
# Test debug info index generation.
clearCache
outPath=$(nix-build --no-out-link -E '
with import ./config.nix;
mkDerivation {
name = "debug-info";
buildCommand = "mkdir -p $out/lib/debug/.build-id/02; echo foo > $out/lib/debug/.build-id/02/623eda209c26a59b1a8638ff7752f6b945c26b.debug";
}
')
nix copy --to "file://$cacheDir?index-debug-info=1&compression=none" $outPath
diff -u \
<(cat $cacheDir/debuginfo/02623eda209c26a59b1a8638ff7752f6b945c26b.debug | jq -S) \
<(echo '{"archive":"../nar/100vxs724qr46phz8m24iswmg9p3785hsyagz0kchf6q6gf06sw6.nar","member":"lib/debug/.build-id/02/623eda209c26a59b1a8638ff7752f6b945c26b.debug"}' | jq -S)
# Test against issue https://github.com/NixOS/nix/issues/3964
#
expr='
with import ./config.nix;
mkDerivation {
name = "multi-output";
buildCommand = "mkdir -p $out; echo foo > $doc; echo $doc > $out/docref";
outputs = ["out" "doc"];
}
'
outPath=$(nix-build --no-out-link -E "$expr")
docPath=$(nix-store -q --references $outPath)
# $ nix-store -q --tree $outPath
# ...-multi-output
# +---...-multi-output-doc
nix copy --to "file://$cacheDir" $outPath
hashpart() {
basename "$1" | cut -c1-32
}
# break the closure of out by removing doc
rm $cacheDir/$(hashpart $docPath).narinfo
nix-store --delete $outPath $docPath
# -vvv is the level that logs during the loop
timeout 60 nix-build --no-out-link -E "$expr" --option substituters "file://$cacheDir" \
--option trusted-binary-caches "file://$cacheDir" --no-require-sigs
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