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source common.sh
clearManifests
mkdir -p $TEST_ROOT/cache2 $TEST_ROOT/patches
RESULT=$TEST_ROOT/result
# Build version 1 and 2 of the "foo" package.
$NIX_BIN_DIR/nix-push --copy $TEST_ROOT/cache2 $TEST_ROOT/manifest1 \
$($nixbuild -o $RESULT binary-patching.nix --arg version 1)
out2=$($nixbuild -o $RESULT binary-patching.nix --arg version 2)
$NIX_BIN_DIR/nix-push --copy $TEST_ROOT/cache2 $TEST_ROOT/manifest2 $out2
out3=$($nixbuild -o $RESULT binary-patching.nix --arg version 3)
$NIX_BIN_DIR/nix-push --copy $TEST_ROOT/cache2 $TEST_ROOT/manifest3 $out3
rm $RESULT
# Generate binary patches.
$NIX_BIN_DIR/nix-generate-patches $TEST_ROOT/cache2 $TEST_ROOT/patches \
file://$TEST_ROOT/patches $TEST_ROOT/manifest1 $TEST_ROOT/manifest2
$NIX_BIN_DIR/nix-generate-patches $TEST_ROOT/cache2 $TEST_ROOT/patches \
file://$TEST_ROOT/patches $TEST_ROOT/manifest2 $TEST_ROOT/manifest3
grep -q "patch {" $TEST_ROOT/manifest3
# Get rid of versions 2 and 3.
$nixstore --delete $out2 $out3
# Pull the manifest containing the patches.
clearManifests
$NIX_BIN_DIR/nix-pull file://$TEST_ROOT/manifest3
# Make sure that the download size prediction uses the patches rather
# than the full download.
$nixbuild -o $RESULT binary-patching.nix --arg version 3 --dry-run 2>&1 | grep -q "0.01 MiB"
# Now rebuild it. This should use the two patches generated above.
rm -f $TEST_ROOT/var/log/nix/downloads
$nixbuild -o $RESULT binary-patching.nix --arg version 3
rm $RESULT
[ "$(grep ' patch ' $TEST_ROOT/var/log/nix/downloads | wc -l)" -eq 2 ]
# Add a patch from version 1 directly to version 3.
$NIX_BIN_DIR/nix-generate-patches $TEST_ROOT/cache2 $TEST_ROOT/patches \
file://$TEST_ROOT/patches $TEST_ROOT/manifest1 $TEST_ROOT/manifest3
# Rebuild version 3. This should use the direct patch rather than the
# sequence of two patches.
$nixstore --delete $out2 $out3
clearManifests
rm $TEST_ROOT/var/log/nix/downloads
$NIX_BIN_DIR/nix-pull file://$TEST_ROOT/manifest3
$nixbuild -o $RESULT binary-patching.nix --arg version 3
[ "$(grep ' patch ' $TEST_ROOT/var/log/nix/downloads | wc -l)" -eq 1 ]
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