chore: checkpoint before Python removal

vendor/pem-rfc7468/tests/encode.rs

@@ -0,0 +1,21 @@
+//! PEM decoding tests
+
+#![cfg(feature = "alloc")]
+
+use pem_rfc7468::LineEnding;
+
+#[test]
+fn pkcs1_example() {
+    let label = "RSA PRIVATE KEY";
+    let bytes = include_bytes!("examples/pkcs1.der");
+    let encoded = pem_rfc7468::encode_string(label, LineEnding::LF, bytes).unwrap();
+    assert_eq!(&encoded, include_str!("examples/pkcs1.pem"));
+}
+
+#[test]
+fn pkcs8_example() {
+    let label = "PRIVATE KEY";
+    let bytes = include_bytes!("examples/pkcs8.der");
+    let encoded = pem_rfc7468::encode_string(label, LineEnding::LF, bytes).unwrap();
+    assert_eq!(&encoded, include_str!("examples/pkcs8.pem"));
+}