diff --git a/Cargo.lock b/Cargo.lock
index 03ce5f2..84db568 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -360,6 +360,7 @@ dependencies = [
  "p256",
  "reth",
  "revm-primitives",
+ "rstest",
 ]
 
 [[package]]
@@ -4568,6 +4569,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "relative-path"
+version = "1.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e898588f33fdd5b9420719948f9f2a32c922a246964576f71ba7f24f80610fbc"
+
 [[package]]
 name = "reqwest"
 version = "0.11.24"
@@ -6002,6 +6009,35 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "afab94fb28594581f62d981211a9a4d53cc8130bbcbbb89a0440d9b8e81a7746"
 
+[[package]]
+name = "rstest"
+version = "0.18.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97eeab2f3c0a199bc4be135c36c924b6590b88c377d416494288c14f2db30199"
+dependencies = [
+ "futures",
+ "futures-timer",
+ "rstest_macros",
+ "rustc_version 0.4.0",
+]
+
+[[package]]
+name = "rstest_macros"
+version = "0.18.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d428f8247852f894ee1be110b375111b586d4fa431f6c46e64ba5a0dcccbe605"
+dependencies = [
+ "cfg-if",
+ "glob",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "relative-path",
+ "rustc_version 0.4.0",
+ "syn 2.0.52",
+ "unicode-ident",
+]
+
 [[package]]
 name = "ruint"
 version = "1.12.0"
diff --git a/Cargo.toml b/Cargo.toml
index ab40905..8ed723c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -63,3 +63,6 @@ revm-primitives = { version = "2.1.0", features = ["std"], default-features = fa
 clap = "4"
 eyre = "0.6.12"
 tracing = "0.1.0"
+
+# misc-testing
+rstest = "0.18.2"
diff --git a/crates/precompile/Cargo.toml b/crates/precompile/Cargo.toml
index fab3fc4..4bb4fce 100644
--- a/crates/precompile/Cargo.toml
+++ b/crates/precompile/Cargo.toml
@@ -14,5 +14,8 @@ p256 = { version = "0.13.2", features = ["ecdsa"] }
 reth.workspace = true
 revm-primitives.workspace = true
 
+[dev-dependencies]
+rstest.workspace = true
+
 [lints]
 workspace = true
diff --git a/crates/precompile/src/secp256r1.rs b/crates/precompile/src/secp256r1.rs
index 4e535d6..67c8815 100644
--- a/crates/precompile/src/secp256r1.rs
+++ b/crates/precompile/src/secp256r1.rs
@@ -47,16 +47,42 @@ fn p256_verify(i: &Bytes, target_gas: u64) -> PrecompileResult {
 #[cfg(test)]
 mod test {
     use super::p256_verify;
-    use revm_primitives::{hex::FromHex, Bytes};
+    use revm_primitives::{hex::FromHex, Bytes, PrecompileError};
+    use rstest::rstest;
 
-    #[test]
-    fn proper_sig_verify() {
-        let input = Bytes::from_hex("4cee90eb86eaa050036147a12d49004b6b9c72bd725d39d4785011fe190f0b4da73bd4903f0ce3b639bbbf6e8e80d16931ff4bcf5993d58468e8fb19086e8cac36dbcd03009df8c59286b162af3bd7fcc0450c9aa81be5d10d312af6c66b1d604aebd3099c618202fcfe16ae7770b0c49ab5eadf74b754204a3bb6060e44eff37618b065f9832de4ca6ca971a7a1adc826d0f7c00181a5fb2ddf79ae00b4e10e").unwrap();
+    #[rstest]
+    // test vectors from https://github.com/daimo-eth/p256-verifier/tree/master/test-vectors
+    #[case::ok_1("4cee90eb86eaa050036147a12d49004b6b9c72bd725d39d4785011fe190f0b4da73bd4903f0ce3b639bbbf6e8e80d16931ff4bcf5993d58468e8fb19086e8cac36dbcd03009df8c59286b162af3bd7fcc0450c9aa81be5d10d312af6c66b1d604aebd3099c618202fcfe16ae7770b0c49ab5eadf74b754204a3bb6060e44eff37618b065f9832de4ca6ca971a7a1adc826d0f7c00181a5fb2ddf79ae00b4e10e", true)]
+    #[case::ok_2("3fec5769b5cf4e310a7d150508e82fb8e3eda1c2c94c61492d3bd8aea99e06c9e22466e928fdccef0de49e3503d2657d00494a00e764fd437bdafa05f5922b1fbbb77c6817ccf50748419477e843d5bac67e6a70e97dde5a57e0c983b777e1ad31a80482dadf89de6302b1988c82c29544c9c07bb910596158f6062517eb089a2f54c9a0f348752950094d3228d3b940258c75fe2a413cb70baa21dc2e352fc5", true)]
+    #[case::ok_3("e775723953ead4a90411a02908fd1a629db584bc600664c609061f221ef6bf7c440066c8626b49daaa7bf2bcc0b74be4f7a1e3dcf0e869f1542fe821498cbf2de73ad398194129f635de4424a07ca715838aefe8fe69d1a391cfa70470795a80dd056866e6e1125aff94413921880c437c9e2570a28ced7267c8beef7e9b2d8d1547d76dfcf4bee592f5fefe10ddfb6aeb0991c5b9dbbee6ec80d11b17c0eb1a", true)]
+    #[case::ok_4("b5a77e7a90aa14e0bf5f337f06f597148676424fae26e175c6e5621c34351955289f319789da424845c9eac935245fcddd805950e2f02506d09be7e411199556d262144475b1fa46ad85250728c600c53dfd10f8b3f4adf140e27241aec3c2da3a81046703fccf468b48b145f939efdbb96c3786db712b3113bb2488ef286cdcef8afe82d200a5bb36b5462166e8ce77f2d831a52ef2135b2af188110beaefb1", true)]
+    #[case::ok_5("858b991cfd78f16537fe6d1f4afd10273384db08bdfc843562a22b0626766686f6aec8247599f40bfe01bec0e0ecf17b4319559022d4d9bf007fe929943004eb4866760dedf31b7c691f5ce665f8aae0bda895c23595c834fecc2390a5bcc203b04afcacbb4280713287a2d0c37e23f7513fab898f2c1fefa00ec09a924c335d9b629f1d4fb71901c3e59611afbfea354d101324e894c788d1c01f00b3c251b2", true)]
+    #[case::fail_1("3cee90eb86eaa050036147a12d49004b6b9c72bd725d39d4785011fe190f0b4da73bd4903f0ce3b639bbbf6e8e80d16931ff4bcf5993d58468e8fb19086e8cac36dbcd03009df8c59286b162af3bd7fcc0450c9aa81be5d10d312af6c66b1d604aebd3099c618202fcfe16ae7770b0c49ab5eadf74b754204a3bb6060e44eff37618b065f9832de4ca6ca971a7a1adc826d0f7c00181a5fb2ddf79ae00b4e10e", false)]
+    #[case::fail_2("afec5769b5cf4e310a7d150508e82fb8e3eda1c2c94c61492d3bd8aea99e06c9e22466e928fdccef0de49e3503d2657d00494a00e764fd437bdafa05f5922b1fbbb77c6817ccf50748419477e843d5bac67e6a70e97dde5a57e0c983b777e1ad31a80482dadf89de6302b1988c82c29544c9c07bb910596158f6062517eb089a2f54c9a0f348752950094d3228d3b940258c75fe2a413cb70baa21dc2e352fc5", false)]
+    #[case::fail_3("f775723953ead4a90411a02908fd1a629db584bc600664c609061f221ef6bf7c440066c8626b49daaa7bf2bcc0b74be4f7a1e3dcf0e869f1542fe821498cbf2de73ad398194129f635de4424a07ca715838aefe8fe69d1a391cfa70470795a80dd056866e6e1125aff94413921880c437c9e2570a28ced7267c8beef7e9b2d8d1547d76dfcf4bee592f5fefe10ddfb6aeb0991c5b9dbbee6ec80d11b17c0eb1a", false)]
+    #[case::fail_4("c5a77e7a90aa14e0bf5f337f06f597148676424fae26e175c6e5621c34351955289f319789da424845c9eac935245fcddd805950e2f02506d09be7e411199556d262144475b1fa46ad85250728c600c53dfd10f8b3f4adf140e27241aec3c2da3a81046703fccf468b48b145f939efdbb96c3786db712b3113bb2488ef286cdcef8afe82d200a5bb36b5462166e8ce77f2d831a52ef2135b2af188110beaefb1", false)]
+    #[case::fail_5("958b991cfd78f16537fe6d1f4afd10273384db08bdfc843562a22b0626766686f6aec8247599f40bfe01bec0e0ecf17b4319559022d4d9bf007fe929943004eb4866760dedf31b7c691f5ce665f8aae0bda895c23595c834fecc2390a5bcc203b04afcacbb4280713287a2d0c37e23f7513fab898f2c1fefa00ec09a924c335d9b629f1d4fb71901c3e59611afbfea354d101324e894c788d1c01f00b3c251b2", false)]
+    fn test_sig_verify(#[case] input: &str, #[case] expect_success: bool) {
+        let input = Bytes::from_hex(input).unwrap();
         let target_gas = 3_500u64;
         let (gas_used, res) = p256_verify(&input, target_gas).unwrap();
         assert_eq!(gas_used, 3_450u64);
-        let mut expected_res = [0u8; 32];
-        expected_res[31] = 1;
-        assert_eq!(res, expected_res.to_vec());
+        let expected_result_str = if expect_success {
+            "0000000000000000000000000000000000000000000000000000000000000001"
+        } else {
+            "0000000000000000000000000000000000000000000000000000000000000000"
+        };
+        let expected_result = Bytes::from_hex(expected_result_str).unwrap();
+        assert_eq!(res, expected_result.to_vec());
+    }
+
+    #[rstest]
+    fn test_not_enough_gas_fails() {
+        let input = Bytes::from_hex("4cee90eb86eaa050036147a12d49004b6b9c72bd725d39d4785011fe190f0b4da73bd4903f0ce3b639bbbf6e8e80d16931ff4bcf5993d58468e8fb19086e8cac36dbcd03009df8c59286b162af3bd7fcc0450c9aa81be5d10d312af6c66b1d604aebd3099c618202fcfe16ae7770b0c49ab5eadf74b754204a3bb6060e44eff37618b065f9832de4ca6ca971a7a1adc826d0f7c00181a5fb2ddf79ae00b4e10e").unwrap();
+        let target_gas = 2_500u64;
+        let result = p256_verify(&input, target_gas);
+
+        assert!(result.is_err());
+        assert_eq!(result.err(), Some(PrecompileError::OutOfGas));
     }
 }