chore: checkpoint before Python removal

vendor/ssh-encoding/tests/decode.rs

@@ -0,0 +1,74 @@
+//! Tests for the `Decode` trait.
+
+use hex_literal::hex;
+use ssh_encoding::{Decode, Error};
+
+#[test]
+fn decode_u8() {
+    let mut bytes = hex!("42").as_slice();
+    let ret = u8::decode(&mut bytes).unwrap();
+    assert_eq!(ret, 0x42u8);
+}
+
+#[test]
+fn decode_u32() {
+    let mut bytes = hex!("DEADBEEF").as_slice();
+    let ret = u32::decode(&mut bytes).unwrap();
+    assert_eq!(ret, 0xDEADBEEFu32);
+}
+
+#[test]
+fn decode_u64() {
+    let mut bytes = hex!("0000DEADBEEFCAFE").as_slice();
+    let ret = u64::decode(&mut bytes).unwrap();
+    assert_eq!(ret, 0xDEADBEEFCAFEu64);
+}
+
+#[test]
+fn decode_usize() {
+    let mut bytes = hex!("000FFFFF").as_slice();
+    let ret = usize::decode(&mut bytes).unwrap();
+    assert_eq!(ret, 0xFFFFFusize);
+}
+
+/// `usize` decoder has a sanity limit of 0xFFFFF.
+#[test]
+fn reject_oversize_usize() {
+    let mut bytes = hex!("00100000").as_slice();
+    let err = usize::decode(&mut bytes).err().unwrap();
+    assert_eq!(err, Error::Overflow);
+}
+
+#[test]
+fn decode_byte_slice() {
+    let mut bytes = hex!("000000076578616d706c65").as_slice();
+    let ret = <[u8; 7]>::decode(&mut bytes).unwrap();
+    assert_eq!(&ret, b"example");
+}
+
+#[cfg(feature = "alloc")]
+#[test]
+fn decode_byte_vec() {
+    let mut bytes = hex!("000000076578616d706c65").as_slice();
+    let ret = Vec::<u8>::decode(&mut bytes).unwrap();
+    assert_eq!(&ret, b"example");
+}
+
+#[cfg(feature = "alloc")]
+#[test]
+fn decode_string() {
+    let mut bytes = hex!("000000076578616d706c65").as_slice();
+    let ret = String::decode(&mut bytes).unwrap();
+    assert_eq!(&ret, "example");
+}
+
+#[cfg(feature = "alloc")]
+#[test]
+fn decode_string_vec() {
+    let mut bytes = hex!("0000001500000003666f6f000000036261720000000362617a").as_slice();
+    let ret = Vec::<String>::decode(&mut bytes).unwrap();
+    assert_eq!(ret.len(), 3);
+    assert_eq!(ret[0], "foo");
+    assert_eq!(ret[1], "bar");
+    assert_eq!(ret[2], "baz");
+}