Add SonarCloud analysis to CI

.github/workflows/ci.yml

@@ -50,3 +50,40 @@ jobs:
 
       - name: Format check
         run: cargo fmt --check
+
+  sonarqube:
+    name: SonarQube
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy, llvm-tools-preview
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Generate Clippy report
+        run: cargo clippy --features alloc --message-format=json &> clippy-report.json
+
+      - name: Generate coverage report
+        run: cargo llvm-cov --features alloc --lcov --output-path lcov.info
+
+      - name: SonarQube Scan
+        uses: SonarSource/sonarqube-scan-action@v5
+        env:
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}

README.md

@@ -7,6 +7,7 @@
 [![Crates.io](https://img.shields.io/crates/v/rustebra?style=flat-square&color=fc8d62)](https://crates.io/crates/rustebra)
 [![docs.rs](https://img.shields.io/docsrs/rustebra?style=flat-square&label=docs.rs)](https://docs.rs/rustebra)
 [![CI](https://img.shields.io/github/actions/workflow/status/tec-eli/rustebra/ci.yml?style=flat-square&label=CI)](https://github.com/tec-eli/rustebra/actions/workflows/ci.yml)
+[![Quality gate](https://sonarcloud.io/api/project_badges/quality_gate?project=tec-eli_rustebra)](https://sonarcloud.io/summary/new_code?id=tec-eli_rustebra)
 [![License](https://img.shields.io/badge/license-Apache_2.0-blue?style=flat-square)](https://opensource.org/licenses/Apache-2.0)
 [![no_std](https://img.shields.io/badge/no__std-compatible-success?style=flat-square)](https://docs.rust-embedded.org/book/)
 [![MSRV](https://img.shields.io/badge/MSRV-1.85-orange?style=flat-square)](https://blog.rust-lang.org/2025/02/20/Rust-1.85.0.html)

sonar-project.properties

@@ -0,0 +1,9 @@
+sonar.projectKey=tec-eli_rustebra
+sonar.organization=tec-eli
+sonar.projectName=rustebra
+sonar.sources=src
+sonar.tests=tests
+
+sonar.rust.clippy.enabled=false
+sonar.rust.clippy.reportPaths=clippy-report.json
+sonar.rust.lcov.reportPaths=lcov.info

src/krylov/arnoldi.rs

@@ -282,9 +282,21 @@ mod tests {
         // Upper Hessenberg: zero strictly below the first subdiagonal.
         assert_close(h.entry(2, 0).unwrap(), 0.0, 1e-10);
 
-        assert_close(projection_entry(&a, 3, &basis, 0, 0), h.entry(0, 0).unwrap(), 1e-10);
-        assert_close(projection_entry(&a, 3, &basis, 1, 0), h.entry(1, 0).unwrap(), 1e-10);
-        assert_close(projection_entry(&a, 3, &basis, 2, 1), h.entry(2, 1).unwrap(), 1e-10);
+        assert_close(
+            projection_entry(&a, 3, &basis, 0, 0),
+            h.entry(0, 0).unwrap(),
+            1e-10,
+        );
+        assert_close(
+            projection_entry(&a, 3, &basis, 1, 0),
+            h.entry(1, 0).unwrap(),
+            1e-10,
+        );
+        assert_close(
+            projection_entry(&a, 3, &basis, 2, 1),
+            h.entry(2, 1).unwrap(),
+            1e-10,
+        );
     }
 
     #[test]
@@ -313,10 +325,26 @@ mod tests {
         let inner: f64 = q_0.iter().zip(q_1.iter()).map(|(x, y)| x * y).sum();
         assert_close(inner, 0.0, 1e-12);
 
-        assert_close(projection_entry(&a, 3, &basis, 0, 0), h.entry(0, 0).unwrap(), 1e-10);
-        assert_close(projection_entry(&a, 3, &basis, 0, 1), h.entry(0, 1).unwrap(), 1e-10);
-        assert_close(projection_entry(&a, 3, &basis, 1, 0), h.entry(1, 0).unwrap(), 1e-10);
-        assert_close(projection_entry(&a, 3, &basis, 1, 1), h.entry(1, 1).unwrap(), 1e-10);
+        assert_close(
+            projection_entry(&a, 3, &basis, 0, 0),
+            h.entry(0, 0).unwrap(),
+            1e-10,
+        );
+        assert_close(
+            projection_entry(&a, 3, &basis, 0, 1),
+            h.entry(0, 1).unwrap(),
+            1e-10,
+        );
+        assert_close(
+            projection_entry(&a, 3, &basis, 1, 0),
+            h.entry(1, 0).unwrap(),
+            1e-10,
+        );
+        assert_close(
+            projection_entry(&a, 3, &basis, 1, 1),
+            h.entry(1, 1).unwrap(),
+            1e-10,
+        );
     }
 
     #[test]

tests/edge_cases/krylov.rs

@@ -3,7 +3,9 @@
 //! dimension mismatches, and the zero vector — cases the property harness deliberately never
 //! generates.
 
-use rustebra::krylov::{ConvergenceError, arnoldi, inverse_power_iteration, lanczos, power_iteration};
+use rustebra::krylov::{
+    ConvergenceError, arnoldi, inverse_power_iteration, lanczos, power_iteration,
+};
 use rustebra::storage::{Basis, StaticStorage};
 
 use crate::common::{

tests/numerical_stress.rs

@@ -8,7 +8,9 @@
 #[allow(dead_code)]
 mod common;
 
-use rustebra::krylov::{ConvergenceError, arnoldi, inverse_power_iteration, lanczos, power_iteration};
+use rustebra::krylov::{
+    ConvergenceError, arnoldi, inverse_power_iteration, lanczos, power_iteration,
+};
 use rustebra::storage::{Basis, StaticStorage};
 
 use common::{

tests/property/krylov/arnoldi.rs

@@ -7,7 +7,9 @@ use proptest::prelude::*;
 use rustebra::krylov::arnoldi;
 use rustebra::storage::{Basis, StaticStorage};
 
-use super::common::{ALGORITHM_TOL, ASSERTION_TOL, N, nonsymmetric_with_spectrum, spectrum_with_gap};
+use super::common::{
+    ALGORITHM_TOL, ASSERTION_TOL, N, nonsymmetric_with_spectrum, spectrum_with_gap,
+};
 
 /// `Qᵗ * A * Q` entry `(r, c)` from the basis, against the row-major `N x N` matrix `a`.
 fn projection_entry(a: &[f64; N * N], basis: &Basis<'_, f64, N>, r: usize, c: usize) -> f64 {

tests/property/krylov/mod.rs

@@ -1,9 +1,8 @@
 // The shared harness also serves the edge-case and stress targets; the fixed-matrix helpers
 // are unused in this one.
+mod arnoldi;
 #[allow(dead_code)]
 mod common;
-mod arnoldi;
 mod inverse_power_iteration;
 mod lanczos;
 mod power_iteration;
-