externalTests: Refactor to be more explicit and easier to adjust for special cases

test/externalTests/ens.sh

@@ -27,16 +27,19 @@ source test/externalTests/common.sh
 verify_input "$1"
 export SOLJSON="$1"
 
-function install_fn { npm install; }
 function compile_fn { npx truffle compile; }
 function test_fn { npm run test; }
 
 function ens_test
 {
-    export OPTIMIZER_LEVEL=1
-    export CONFIG="truffle-config.js"
+    local repo="https://github.com/ensdomains/ens.git"
+    local branch=master
+    local config_file="truffle-config.js"
+    local min_optimizer_level=1
+    local max_optimizer_level=3
 
-    truffle_setup "$SOLJSON" https://github.com/ensdomains/ens.git master
+    setup_solcjs "$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
@@ -44,9 +47,17 @@ function ens_test
     # Remove the lock file (if it exists) to prevent it from overriding our changes in package.json
     rm -f package-lock.json
 
-    run_install "$SOLJSON" install_fn
+    replace_version_pragmas
+    force_truffle_solc_modules "$SOLJSON"
+    force_truffle_compiler_settings "$config_file" "${DIR}/solc" "$min_optimizer_level"
+    npm install
 
-    truffle_run_test "$SOLJSON" compile_fn test_fn
+    replace_version_pragmas
+    force_truffle_solc_modules "$SOLJSON"
+
+    for level in $(seq "$min_optimizer_level" "$max_optimizer_level"); do
+        truffle_run_test "$config_file" "${DIR}/solc" "$level" compile_fn test_fn
+    done
 }
 
 external_test Ens ens_test