Fix .gitignore: stop tracking ignored files

backend/lib/openzeppelin-contracts/hardhat/task-test-get-files.js

@@ -0,0 +1,35 @@
+const { internalTask } = require('hardhat/config');
+const { TASK_TEST_GET_TEST_FILES } = require('hardhat/builtin-tasks/task-names');
+
+// Modifies `hardhat test` to skip the proxy tests after proxies are removed by the transpiler for upgradeability.
+
+internalTask(TASK_TEST_GET_TEST_FILES).setAction(async ({ testFiles }, { config }) => {
+  if (testFiles.length !== 0) {
+    return testFiles;
+  }
+
+  const globAsync = require('glob');
+  const path = require('path');
+  const { promises: fs } = require('fs');
+  const { promisify } = require('util');
+
+  const glob = promisify(globAsync);
+
+  const hasProxies = await fs
+    .access(path.join(config.paths.sources, 'proxy/Proxy.sol'))
+    .then(() => true)
+    .catch(() => false);
+
+  return await glob(path.join(config.paths.tests, '**/*.js'), {
+    ignore: hasProxies
+      ? []
+      : [
+          'proxy/beacon/BeaconProxy.test.js',
+          'proxy/beacon/UpgradeableBeacon.test.js',
+          'proxy/ERC1967/ERC1967Proxy.test.js',
+          'proxy/transparent/ProxyAdmin.test.js',
+          'proxy/transparent/TransparentUpgradeableProxy.test.js',
+          'proxy/utils/UUPSUpgradeable.test.js',
+        ].map(p => path.join(config.paths.tests, p)),
+  });
+});