chore: checkpoint before Python removal

vendor/cpufeatures/tests/aarch64.rs

@@ -0,0 +1,17 @@
+//! ARM64 tests
+
+#![cfg(target_arch = "aarch64")]
+
+cpufeatures::new!(armcaps, "aes", "sha2", "sha3", "sm4");
+
+#[test]
+fn init() {
+    let token: armcaps::InitToken = armcaps::init();
+    assert_eq!(token.get(), armcaps::get());
+}
+
+#[test]
+fn init_get() {
+    let (token, val) = armcaps::init_get();
+    assert_eq!(val, token.get());
+}