Merge rust-bitcoin/rust-bitcoin#1079: Run clippy from the test script

74f3a5a Run clippy from the test script (Tobin C. Harding)
aa8109a Use struct field short form (Tobin C. Harding)
d1a0540 Remove redundant calls to clone (Tobin C. Harding)
1964925 Use assert instead of assert_eq (Tobin C. Harding)
3173ef9 Remove unnecessary explicit reference (Tobin C. Harding)

Pull request description:

  Currently we run clippy in CI using a github action. The invocation has a couple of shortcomings

  1. it does not lint the tests (this requires `--all-targets`)
  2. it does not lint the examples

  I could not find a way to lint the examples without explicitly linting each example by name.

  **This PR does the following:**

  - Fix clippy issues (patch 1-4)
  - Move the clippy control to `test.sh`
  - Add an env var `DO_LINT` to control it
  - Remove the separate CI job
  - Run the linter during the `Test` job using the stable toolchain.
  - Run clippy with ` --all-features` AND `--all-targets` (only recently made possible).
  - Run each example explicitly

  Thanks to dunxen for noticing all the errors in my psbt example on review and prompting me to work out why clippy was not running :)

ACKs for top commit:
  apoelstra:
    ACK 74f3a5a
  Kixunil:
    ACK 74f3a5a

Tree-SHA512: 56dc6262144f4caa5efa6fdc46aeecf7bddc050ef134a639b31a34d4c5e01abcdeda18a00f4ded443866bbdfc982b4e5b67b0089639e0c253e207f0b54777f57

Author: apoelstra

.github/workflows/rust.yml

@@ -13,6 +13,7 @@ jobs:
           - rust: stable
             env:
               DO_COV: true
+              DO_LINT: true
               AS_DEPENDENCY: true
               DO_NO_STD: true
           - rust: beta
@@ -106,19 +107,3 @@ jobs:
           RUSTFLAGS: "-C link-arg=-Tlink.x"
           CARGO_TARGET_THUMBV7M_NONE_EABI_RUNNER: "qemu-system-arm -cpu cortex-m3 -machine mps2-an385 -nographic -semihosting-config enable=on,target=native -kernel"
         run: cd embedded && cargo run --target thumbv7m-none-eabi
-
-  Clippy:
-    name: Clippy
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - run: rustup component add clippy
-      - uses: actions-rs/cargo@v1
-        with:
-          command: clippy
-          args: --all-features -- -D warnings

contrib/test.sh

@@ -31,6 +31,14 @@ if [ "$duplicate_dependencies" -ne 0 ]; then
     exit 1
 fi
 
+if [ "$DO_LINT" = true ]
+then
+    cargo clippy --all-features --all-targets -- -D warnings
+    cargo clippy --example bip32 -- -D warnings
+    cargo clippy --example handshake -- -D warnings
+    cargo clippy --example ecdsa-psbt --features=bitcoinconsensus -- -D warnings
+fi
+
 echo "********* Testing std *************"
 # Test without any features other than std first
 cargo test --verbose --no-default-features --features="std"

src/util/amount.rs

@@ -2033,10 +2033,10 @@ mod tests {
 
         let json = "{\"amt\": 21000000.00000001, \
                     \"samt\": -21000000.00000001}";
-        let t: T = serde_json::from_str(&json).unwrap();
+        let t: T = serde_json::from_str(json).unwrap();
         assert_eq!(t, orig);
 
-        let value: serde_json::Value = serde_json::from_str(&json).unwrap();
+        let value: serde_json::Value = serde_json::from_str(json).unwrap();
         assert_eq!(t, serde_json::from_value(value).unwrap());
 
         // errors

src/util/key.rs

@@ -638,7 +638,7 @@ mod tests {
         ];
 
         let s = Secp256k1::new();
-        let sk = PrivateKey::from_str(&KEY_WIF).unwrap();
+        let sk = PrivateKey::from_str(KEY_WIF).unwrap();
         let pk = PublicKey::from_private_key(&s, &sk);
         let pk_u = PublicKey {
             inner: pk.inner,

src/util/misc.rs

@@ -317,7 +317,7 @@ mod tests {
 
         let secp = secp256k1::Secp256k1::new();
         let message = "rust-bitcoin MessageSignature test";
-        let msg_hash = super::signed_msg_hash(&message);
+        let msg_hash = super::signed_msg_hash(message);
         let msg = secp256k1::Message::from(msg_hash);
 
 
@@ -331,7 +331,7 @@ mod tests {
         assert_eq!(signature.to_base64(), signature.to_string());
         let signature2 = super::MessageSignature::from_str(&signature.to_string()).unwrap();
         let pubkey = signature2.recover_pubkey(&secp, msg_hash).unwrap();
-        assert_eq!(pubkey.compressed, true);
+        assert!(pubkey.compressed);
         assert_eq!(pubkey.inner, secp256k1::PublicKey::from_secret_key(&secp, &privkey));
 
         let p2pkh = Address::p2pkh(&pubkey, Network::Bitcoin);
@@ -357,7 +357,7 @@ mod tests {
 
         let secp = secp256k1::Secp256k1::new();
         let message = "a different message from what was signed";
-        let msg_hash = super::signed_msg_hash(&message);
+        let msg_hash = super::signed_msg_hash(message);
 
         // Signature of msg = "rust-bitcoin MessageSignature test"
         // Signed with pk "UuOGDsfLPr4HIMKQX0ipjJeRaj1geCq3yPUF2COP5ME="

src/util/psbt/mod.rs

@@ -543,7 +543,7 @@ mod tests {
                 let xpub: ExtendedPubKey =
                     "xpub661MyMwAqRbcGoRVtwfvzZsq2VBJR1LAHfQstHUoxqDorV89vRoMxUZ27kLrraAj6MPi\
                     QfrDb27gigC1VS1dBXi5jGpxmMeBXEkKkcXUTg4".parse().unwrap();
-                vec![(xpub, key_source.clone())].into_iter().collect()
+                vec![(xpub, key_source)].into_iter().collect()
             },
             unsigned_tx: {
                 let mut unsigned = tx.clone();
@@ -579,8 +579,8 @@ mod tests {
             }],
             outputs: vec![Output {
                 bip32_derivation: keypaths,
-                proprietary: proprietary.clone(),
-                unknown: unknown.clone(),
+                proprietary,
+                unknown,
                 ..Default::default()
             }],
         };