1 files changed, 82 insertions, 0 deletions
diff --git a/vendor/p384/tests/affine.rs b/vendor/p384/tests/affine.rs
new file mode 100644
index 000000000..f9313e6e5
--- /dev/null
+++ b/vendor/p384/tests/affine.rs
@@ -0,0 +1,82 @@
+//! Affine arithmetic tests.
+
+#![cfg(all(feature = "arithmetic", feature = "test-vectors"))]
+
+use elliptic_curve::{
+    group::{prime::PrimeCurveAffine, GroupEncoding},
+    sec1::{FromEncodedPoint, ToEncodedPoint},
+};
+use hex_literal::hex;
+
+use p384::{AffinePoint, EncodedPoint};
+
+const UNCOMPRESSED_BASEPOINT: &[u8] = &hex!(
+    "04 aa87ca22 be8b0537 8eb1c71e f320ad74 6e1d3b62 8ba79b98
+        59f741e0 82542a38 5502f25d bf55296c 3a545e38 72760ab7
+        3617de4a 96262c6f 5d9e98bf 9292dc29 f8f41dbd 289a147c
+        e9da3113 b5f0b8c0 0a60b1ce 1d7e819d 7a431d7c 90ea0e5f"
+);
+
+const COMPRESSED_BASEPOINT: &[u8] = &hex!(
+    "03 aa87ca22 be8b0537 8eb1c71e f320ad74 6e1d3b62 8ba79b98
+        59f741e0 82542a38 5502f25d bf55296c 3a545e38 72760ab7"
+);
+
+#[test]
+fn uncompressed_round_trip() {
+    let pubkey = EncodedPoint::from_bytes(UNCOMPRESSED_BASEPOINT).unwrap();
+    let point = AffinePoint::from_encoded_point(&pubkey).unwrap();
+    assert_eq!(point, AffinePoint::generator());
+
+    let res: EncodedPoint = point.into();
+    assert_eq!(res, pubkey);
+}
+
+#[test]
+fn compressed_round_trip() {
+    let pubkey = EncodedPoint::from_bytes(COMPRESSED_BASEPOINT).unwrap();
+    let point = AffinePoint::from_encoded_point(&pubkey).unwrap();
+    assert_eq!(point, AffinePoint::generator());
+
+    let res: EncodedPoint = point.to_encoded_point(true);
+    assert_eq!(res, pubkey);
+}
+
+#[test]
+fn uncompressed_to_compressed() {
+    let encoded = EncodedPoint::from_bytes(UNCOMPRESSED_BASEPOINT).unwrap();
+
+    let res = AffinePoint::from_encoded_point(&encoded)
+        .unwrap()
+        .to_encoded_point(true);
+
+    assert_eq!(res.as_bytes(), COMPRESSED_BASEPOINT);
+}
+
+#[test]
+fn compressed_to_uncompressed() {
+    let encoded = EncodedPoint::from_bytes(COMPRESSED_BASEPOINT).unwrap();
+
+    let res = AffinePoint::from_encoded_point(&encoded)
+        .unwrap()
+        .to_encoded_point(false);
+
+    assert_eq!(res.as_bytes(), UNCOMPRESSED_BASEPOINT);
+}
+
+#[test]
+fn affine_negation() {
+    let basepoint = AffinePoint::generator();
+    assert_eq!(-(-basepoint), basepoint);
+}
+
+#[test]
+fn identity_encoding() {
+    // This is technically an invalid SEC1 encoding, but is preferable to panicking.
+    assert_eq!([0; 49], AffinePoint::IDENTITY.to_bytes().as_slice());
+    assert!(bool::from(
+        AffinePoint::from_bytes(&AffinePoint::IDENTITY.to_bytes())
+            .unwrap()
+            .is_identity()
+    ))
+}