chore: checkpoint before Python removal

vendor/ssh-key/tests/algorithm_name.rs

@@ -0,0 +1,56 @@
+//! Tests for `AlgorithmName` parsing.
+
+#![cfg(feature = "alloc")]
+
+use ssh_key::AlgorithmName;
+use std::str::FromStr;
+
+#[test]
+fn additional_algorithm_name() {
+    const NAME: &str = "name@example.com";
+    const CERT_STR: &str = "name-cert-v01@example.com";
+
+    let name = AlgorithmName::from_str(NAME).unwrap();
+    assert_eq!(name.as_str(), NAME);
+    assert_eq!(name.certificate_type(), CERT_STR);
+
+    let name = AlgorithmName::from_certificate_type(CERT_STR).unwrap();
+    assert_eq!(name.as_str(), NAME);
+    assert_eq!(name.certificate_type(), CERT_STR);
+}
+
+#[test]
+fn invalid_algorithm_name() {
+    const INVALID_NAMES: &[&str] = &[
+        "nameß@example.com",
+        "name@example@com",
+        "name",
+        "@name",
+        "name@",
+        "",
+        "@",
+        "a-name-that-is-too-long-but-would-otherwise-be-valid-@example.com",
+    ];
+
+    const INVALID_CERT_STRS: &[&str] = &[
+        "nameß-cert-v01@example.com",
+        "name-cert-v01@example@com",
+        "name@example.com",
+    ];
+
+    for name in INVALID_NAMES {
+        assert!(
+            AlgorithmName::from_str(&name).is_err(),
+            "{:?} should be an invalid algorithm name",
+            name
+        );
+    }
+
+    for name in INVALID_CERT_STRS {
+        assert!(
+            AlgorithmName::from_certificate_type(&name).is_err(),
+            "{:?} should be an invalid certificate str",
+            name
+        );
+    }
+}