[tests] check v0.17.1 and v0.18.1 backwards compatibility

ci/README.md

@@ -13,7 +13,7 @@ If the repository is not a fresh git clone, you might have to clean files from p
 
 The ci needs to perform various sysadmin tasks such as installing packages or writing to the user's home directory.
 While most of the actions are done inside a docker container, this is not possible for all. Thus, cache directories,
-such as the depends cache or ccache, are mounted as read-write into the docker container. While it should be fine to run
+such as the depends cache, previous release binaries, or ccache, are mounted as read-write into the docker container. While it should be fine to run
 the ci system locally on you development box, the ci scripts can generally be assumed to have received less review and
 testing compared to other parts of the codebase. If you want to keep the work tree clean, you might want to run the ci
 system in a virtual machine with a Linux operating system of your choice.

ci/test/00_setup_env.sh

@@ -33,6 +33,7 @@ export HOST=${HOST:-$("$BASE_ROOT_DIR/depends/config.guess")}
 export USE_BUSY_BOX=${USE_BUSY_BOX:-false}
 export RUN_UNIT_TESTS=${RUN_UNIT_TESTS:-true}
 export RUN_FUNCTIONAL_TESTS=${RUN_FUNCTIONAL_TESTS:-true}
+export TEST_PREVIOUS_RELEASES=${TEST_PREVIOUS_RELEASES:-false}
 export RUN_FUZZ_TESTS=${RUN_FUZZ_TESTS:-false}
 export CONTAINER_NAME=${CONTAINER_NAME:-ci_unnamed}
 export DOCKER_NAME_TAG=${DOCKER_NAME_TAG:-ubuntu:18.04}
@@ -50,6 +51,7 @@ export CCACHE_DIR=${CCACHE_DIR:-$BASE_SCRATCH_DIR/.ccache}
 export DEPENDS_DIR=${DEPENDS_DIR:-$BASE_ROOT_DIR/depends}
 # Folder where the build is done (bin and lib).
 export BASE_OUTDIR=${BASE_OUTDIR:-$BASE_SCRATCH_DIR/out/$HOST}
+export PREVIOUS_RELEASES_DIR=${PREVIOUS_RELEASES_DIR:-$BASE_ROOT_DIR/releases/$HOST}
 export SDK_URL=${SDK_URL:-https://bitcoincore.org/depends-sources/sdks}
 export WINEDEBUG=${WINEDEBUG:-fixme-all}
 export DOCKER_PACKAGES=${DOCKER_PACKAGES:-build-essential libtool autotools-dev automake pkg-config bsdmainutils curl ca-certificates ccache python3 rsync git procps}

ci/test/00_setup_env_native_qt5.sh

@@ -11,4 +11,5 @@ export PACKAGES="python3-zmq qtbase5-dev qttools5-dev-tools libdbus-1-dev libhar
 export DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1 ALLOW_HOST_PACKAGES=1"
 export TEST_RUNNER_EXTRA="--coverage --extended --exclude feature_dbcrash"  # Run extended tests so that coverage does not fail, but exclude the very slow dbcrash
 export GOAL="install"
+export TEST_PREVIOUS_RELEASES=true
 export BITCOIN_CONFIG="--enable-zmq --with-gui=qt5 --enable-glibc-back-compat --enable-reduce-exports --enable-debug CFLAGS=\"-g0 -O2 -funsigned-char\" CXXFLAGS=\"-g0 -O2 -funsigned-char\""

ci/test/04_install.sh

@@ -40,12 +40,13 @@ fi
 
 mkdir -p "${BASE_SCRATCH_DIR}"
 mkdir -p "${CCACHE_DIR}"
+mkdir -p "${PREVIOUS_RELEASES_DIR}"
 
 export ASAN_OPTIONS="detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1"
 export LSAN_OPTIONS="suppressions=${BASE_ROOT_DIR}/test/sanitizer_suppressions/lsan"
 export TSAN_OPTIONS="suppressions=${BASE_ROOT_DIR}/test/sanitizer_suppressions/tsan:log_path=${BASE_SCRATCH_DIR}/sanitizer-output/tsan"
 export UBSAN_OPTIONS="suppressions=${BASE_ROOT_DIR}/test/sanitizer_suppressions/ubsan:print_stacktrace=1:halt_on_error=1:report_error_type=1"
-env | grep -E '^(BITCOIN_CONFIG|BASE_|QEMU_|CCACHE_|WINEDEBUG|LC_ALL|BOOST_TEST_RANDOM|CONFIG_SHELL|(ASAN|LSAN|TSAN|UBSAN)_OPTIONS)' | tee /tmp/env
+env | grep -E '^(BITCOIN_CONFIG|BASE_|QEMU_|CCACHE_|WINEDEBUG|LC_ALL|BOOST_TEST_RANDOM|CONFIG_SHELL|(ASAN|LSAN|TSAN|UBSAN)_OPTIONS|TEST_PREVIOUS_RELEASES|PREVIOUS_RELEASES_DIR)' | tee /tmp/env
 if [[ $HOST = *-mingw32 ]]; then
   DOCKER_ADMIN="--cap-add SYS_ADMIN"
 elif [[ $BITCOIN_CONFIG = *--with-sanitizers=*address* ]]; then # If ran with (ASan + LSan), Docker needs access to ptrace (https://github.com/google/sanitizers/issues/764)
@@ -62,6 +63,7 @@ if [ -z "$RUN_CI_ON_HOST" ]; then
                   --mount type=bind,src=$BASE_ROOT_DIR,dst=/ro_base,readonly \
                   --mount type=bind,src=$CCACHE_DIR,dst=$CCACHE_DIR \
                   --mount type=bind,src=$DEPENDS_DIR,dst=$DEPENDS_DIR \
+                  --mount type=bind,src=$PREVIOUS_RELEASES_DIR,dst=$PREVIOUS_RELEASES_DIR \
                   -w $BASE_ROOT_DIR \
                   --env-file /tmp/env \
                   --name $CONTAINER_NAME \

ci/test/05_before_script.sh

@@ -35,3 +35,8 @@ if [ -z "$NO_DEPENDS" ]; then
   fi
   DOCKER_EXEC $SHELL_OPTS make $MAKEJOBS -C depends HOST=$HOST $DEP_OPTS
 fi
+if [ "$TEST_PREVIOUS_RELEASES" = "true" ]; then
+  BEGIN_FOLD previous-versions
+  DOCKER_EXEC contrib/devtools/previous_release.sh -b -t "$PREVIOUS_RELEASES_DIR" v0.17.1 v0.18.1
+  END_FOLD
+fi