Use Clippy on test code too (#22)

.github/workflows/main.yml

@@ -89,7 +89,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: clippy
-          args: -- -D warnings
+          args: --all-targets -- -D warnings
 
 
   format:

src/group/tests.rs

@@ -36,10 +36,7 @@ fn test_group_properties() -> Result<(), InternalError> {
 fn test_identity_element_error<CS: CipherSuite>() -> Result<(), InternalError> {
     let identity = CS::Group::identity();
     let result = CS::Group::from_element_slice(&identity.to_arr());
-    assert!(match result {
-        Err(InternalError::PointError) => true,
-        _ => false,
-    });
+    assert!(matches!(result, Err(InternalError::PointError)));
 
     Ok(())
 }
@@ -48,10 +45,7 @@ fn test_identity_element_error<CS: CipherSuite>() -> Result<(), InternalError> {
 fn test_zero_scalar_error<CS: CipherSuite>() -> Result<(), InternalError> {
     let zero_scalar = CS::Group::scalar_zero();
     let result = CS::Group::from_scalar_slice(&CS::Group::scalar_as_bytes(zero_scalar));
-    assert!(match result {
-        Err(InternalError::ZeroScalarError) => true,
-        _ => false,
-    });
+    assert!(matches!(result, Err(InternalError::ZeroScalarError)));
 
     Ok(())
 }

src/tests/parser.rs

@@ -85,7 +85,7 @@ fn parse_params(input: &str) -> String {
                 // If line contains =, then
                 if line.contains('=') {
                     // Clear out any existing string and flush to params
-                    if param.len() > 0 {
+                    if !param.is_empty() {
                         param += "\"";
                         params.push(param);
                     }
@@ -97,11 +97,11 @@ fn parse_params(input: &str) -> String {
                     param = format!("    \"{}\": \"{}", key, val);
                 } else {
                     let s = line.trim().to_string();
-                    if s.contains("~") || s.contains("#") {
+                    if s.contains('~') || s.contains('#') {
                         // Ignore comment lines
                         continue;
                     }
-                    if s.len() > 0 {
+                    if !s.is_empty() {
                         param += &s;
                     }
                 }

src/tests/voprf_test_vectors.rs

@@ -40,14 +40,14 @@ fn populate_test_vectors(values: &JsonValue) -> VOPRFTestVectorParameters {
         seed: decode(values, "seed"),
         sksm: decode(values, "skSm"),
         pksm: decode(values, "pkSm"),
-        input: decode_vec(&values, "Input"),
+        input: decode_vec(values, "Input"),
         info: decode(values, "Info"),
-        blind: decode_vec(&values, "Blind"),
-        blinded_element: decode_vec(&values, "BlindedElement"),
-        evaluation_element: decode_vec(&values, "EvaluationElement"),
+        blind: decode_vec(values, "Blind"),
+        blinded_element: decode_vec(values, "BlindedElement"),
+        evaluation_element: decode_vec(values, "EvaluationElement"),
         proof: decode(values, "Proof"),
         proof_random_scalar: decode(values, "ProofRandomScalar"),
-        output: decode_vec(&values, "Output"),
+        output: decode_vec(values, "Output"),
     }
 }
 
@@ -55,7 +55,7 @@ fn decode(values: &JsonValue, key: &str) -> Vec<u8> {
     values[key]
         .as_str()
         .and_then(|s| hex::decode(&s.to_string()).ok())
-        .unwrap_or(vec![])
+        .unwrap_or_default()
 }
 
 fn decode_vec(values: &JsonValue, key: &str) -> Vec<Vec<u8>> {
@@ -240,7 +240,7 @@ fn test_verifiable_evaluate<CS: CipherSuite>(
 
         let mut blinded_elements = vec![];
         for blinded_element_bytes in &parameters.blinded_element {
-            blinded_elements.push(BlindedElement::deserialize(&blinded_element_bytes)?);
+            blinded_elements.push(BlindedElement::deserialize(blinded_element_bytes)?);
         }
 
         let batch_evaluate_result = server.batch_evaluate(
@@ -269,7 +269,7 @@ fn test_base_finalize<CS: CipherSuite>(
         for i in 0..parameters.input.len() {
             let client = NonVerifiableClient::<CS>::from_data_and_blind(
                 &parameters.input[i],
-                &<CS::Group as Group>::from_scalar_slice(&GenericArray::clone_from_slice(
+                <CS::Group as Group>::from_scalar_slice(&GenericArray::clone_from_slice(
                     &parameters.blind[i],
                 ))?,
             );
@@ -296,10 +296,10 @@ fn test_verifiable_finalize<CS: CipherSuite>(
         for i in 0..parameters.input.len() {
             let client = VerifiableClient::<CS>::from_data_and_blind(
                 &parameters.input[i],
-                &<CS::Group as Group>::from_scalar_slice(&GenericArray::clone_from_slice(
+                <CS::Group as Group>::from_scalar_slice(&GenericArray::clone_from_slice(
                     &parameters.blind[i],
                 ))?,
-                &<CS::Group as Group>::from_element_slice(&GenericArray::clone_from_slice(
+                <CS::Group as Group>::from_element_slice(&GenericArray::clone_from_slice(
                     &parameters.blinded_element[i],
                 ))?,
             );

src/voprf.rs

@@ -177,10 +177,10 @@ impl<CS: CipherSuite> NonVerifiableClient<CS> {
 
     #[cfg(test)]
     /// Only used for test functions
-    pub fn from_data_and_blind(data: &[u8], blind: &<CS::Group as Group>::Scalar) -> Self {
+    pub fn from_data_and_blind(data: &[u8], blind: <CS::Group as Group>::Scalar) -> Self {
         Self {
             data: data.to_vec(),
-            blind: blind.clone(),
+            blind,
         }
     }
 
@@ -271,13 +271,13 @@ impl<CS: CipherSuite> VerifiableClient<CS> {
     /// Only used for test functions
     pub fn from_data_and_blind(
         data: &[u8],
-        blind: &<CS::Group as Group>::Scalar,
-        blinded_element: &CS::Group,
+        blind: <CS::Group as Group>::Scalar,
+        blinded_element: CS::Group,
     ) -> Self {
         Self {
             data: data.to_vec(),
-            blind: blind.clone(),
-            blinded_element: blinded_element.clone(),
+            blind,
+            blinded_element,
         }
     }
 
@@ -447,14 +447,9 @@ impl<CS: CipherSuite> VerifiableServer<CS> {
 
 /// Allows for implementations to specify an optional sequence of
 /// public bytes that must be agreed-upon by the client and server
+#[derive(Default)]
 pub struct Metadata(pub Vec<u8>);
 
-impl Default for Metadata {
-    fn default() -> Self {
-        Self(vec![])
-    }
-}
-
 impl Metadata {
     /// Specifies no metadata (the default option)
     pub fn none() -> Self {
@@ -902,13 +897,8 @@ mod tests {
         )
         .unwrap();
         let mut res2 = vec![];
-        for i in 0..num_iterations {
-            let output = prf::<CS>(
-                &inputs[i][..],
-                server.get_private_key(),
-                info,
-                Mode::Verifiable,
-            );
+        for input in inputs.iter().take(num_iterations) {
+            let output = prf::<CS>(&input[..], server.get_private_key(), info, Mode::Verifiable);
             res2.push(output);
         }
         assert_eq!(client_finalize_result.outputs, res2);