Switch ens external test to ens-contracts repo

.circleci/config.yml

@@ -1186,8 +1186,7 @@ workflows:
           name: t_ems_compile_ext_ens
           project: ens
           compile_only: 1
-          # NOTE: One of the dependencies (fsevents) fails to build its native extension on node.js 12+.
-          nodejs_version: 10
+          nodejs_version: 16
 
       # FIXME: Gnosis tests are pretty flaky right now. They often fail on CircleCI due to random ProviderError
       # and there are also other less frequent problems. See https://github.com/gnosis/safe-contracts/issues/216.
@@ -1211,8 +1210,7 @@ workflows:
           <<: *workflow_emscripten
           name: t_ems_test_ext_ens
           project: ens
-          # NOTE: One of the dependencies (fsevents) fails to build its native extension on node.js 12+.
-          nodejs_version: 10
+          nodejs_version: 16
 
       # Windows build and tests
       - b_win: *workflow_trigger_on_tags

test/externalTests/ens.sh

@@ -27,34 +27,29 @@ source test/externalTests/common.sh
 verify_input "$1"
 export SOLJSON="$1"
 
-function compile_fn { npx truffle compile; }
-function test_fn { npm run test; }
+function compile_fn { yarn build; }
+function test_fn { yarn test; }
 
 function ens_test
 {
-    local repo="https://github.com/solidity-external-tests/ens.git"
-    local branch=master_080
-    local config_file="truffle-config.js"
+    local repo="https://github.com/ensdomains/ens-contracts.git"
+    local branch=master
+    local config_file="hardhat-config.js"
     local min_optimizer_level=1
     local max_optimizer_level=3
 
     setup_solcjs "$DIR" "$SOLJSON"
     download_project "$repo" "$branch" "$DIR"
 
-    # Use latest Truffle. Older versions crash on the output from 0.8.0.
-    force_truffle_version ^5.1.55
-
     neutralize_package_lock
     neutralize_package_json_hooks
-    force_truffle_compiler_settings "$config_file" "${DIR}/solc" "$min_optimizer_level"
-    npm install
-
-    replace_version_pragmas
-    force_truffle_solc_modules "$SOLJSON"
+    force_hardhat_compiler_binary "$config_file" "$SOLJSON"
+    force_hardhat_compiler_settings "$config_file" "$min_optimizer_level"
+    yarn install
 
     for level in $(seq "$min_optimizer_level" "$max_optimizer_level"); do
-        truffle_run_test "$config_file" "${DIR}/solc" "$level" compile_fn test_fn
+        hardhat_run_test "$config_file" "$level" compile_fn test_fn
     done
 }
 
-external_test Ens ens_test
+external_test ENS ens_test