Add Codecov coverage workflow with modern Rust coverage tooling

- Add .github/workflows/coverage.yml with grcov and -Cinstrument-coverage
- Uses nightly Rust with llvm-tools-preview for accurate coverage
- Integrates with Codecov for badge display via shields.io

Author: hnlearndev

.github/workflows/coverage.yml

@@ -0,0 +1,70 @@
+name: Coverage
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  coverage:
+    name: Generate test coverage
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Install system dependencies
+        run: sudo apt-get update && sudo apt-get install -y libfontconfig1-dev pkg-config
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust nightly with required components
+        uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: llvm-tools-preview
+
+      - name: Cache cargo registry and target directory
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-coverage-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-coverage-
+            ${{ runner.os }}-cargo-
+
+      - name: Install grcov
+        uses: taiki-e/install-action@v2
+        with:
+          tool: grcov
+
+      - name: Build
+        run: cargo build --verbose
+        env:
+          RUSTFLAGS: '-Cinstrument-coverage'
+          RUSTDOCFLAGS: '-Cinstrument-coverage'
+
+      - name: Run tests
+        run: cargo test --all-features --verbose
+        env:
+          CARGO_INCREMENTAL: '0'
+          RUSTFLAGS: '-Cinstrument-coverage'
+          RUSTDOCFLAGS: '-Cinstrument-coverage'
+          LLVM_PROFILE_FILE: 'cargo-test-%p-%m.profraw'
+
+      - name: Generate coverage report
+        run: |
+          grcov . --binary-path ./target/debug/deps/ -s . -t lcov --branch --ignore-not-existing --ignore '../*' --ignore "/*" --ignore '*/tests/*' -o coverage.lcov
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          files: coverage.lcov
+          fail_ci_if_error: true
+          flags: unittests
+          verbose: true

.github/workflows/rust.yml

@@ -9,6 +9,14 @@ on:
 jobs:
   build-and-test:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        rust: [stable, '1.89.0', nightly]
+        include:
+          - rust: nightly
+            allow-failure: true
+    continue-on-error: ${{ matrix.allow-failure || false }}
 
     steps:
       - name: Install system dependencies
@@ -17,10 +25,11 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Set up Rust
-        uses: actions-rs/toolchain@v1
+      - name: Set up Rust ${{ matrix.rust }}
+        uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: '1.89.0'
+          toolchain: ${{ matrix.rust }}
+          components: rustfmt, clippy
 
       - name: Build
         run: cargo build --verbose

.gitignore

@@ -21,6 +21,9 @@ Cargo.lock
 # Jujutsu VCS files
 .jj/
 
+# Git files
+.git/
+
 # OS generated files
 .DS_Store
 Thumbs.db

README.md

@@ -8,6 +8,9 @@
 
 [![crates.io Latest Release](https://img.shields.io/crates/v/rslife.svg)](https://crates.io/crates/rslife)
 [![Documentation](https://docs.rs/rslife/badge.svg)](https://docs.rs/rslife/latest/rslife/)
+[![codecov](https://img.shields.io/codecov/c/github/hnlearndev/rslife?logo=codecov&label=coverage)](https://app.codecov.io/gh/hnlearndev/rslife)
+[![codspeed](https://img.shields.io/endpoint?url=https://codspeed.io/badge.json)](https://codspeed.io/nautechsystems/nautilus_trader)
+
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](./LICENSE-MIT)
 [![License: Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-yellow.svg)](./LICENSE-APACHE)
 
@@ -65,7 +68,7 @@ Or add this to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-rslife = "0.2.7"
+rslife = "0.2.9"
 ```
 
 The crate is designed with three main layers to make actuarial computations convenient (more on [architecture from Wiki](https://github.com/hnlearndev/rslife/wiki/Architecture)), as illustrated below:
@@ -327,14 +330,15 @@ See [LICENSE-APACHE](LICENSE-APACHE) and [LICENSE-MIT.md](LICENSE-MIT.md) for de
 
 **Willian Nguyen** - [hieunt(dot)hello(at)gmail(dot)com](mailto:)
 
-**Project Link** - [https://github.com/hnlearndev/rslife](https://github.com/hnlearndev/rslife)
+**Project link** - [https://github.com/hnlearndev/rslife](https://github.com/hnlearndev/rslife)
 
 ## References
 
 - [Actuarial Mathematics for Life Contingent Risks](https://www.goodreads.com/book/show/58306503-actuarial-mathematics-for-life-contingent-risks)
 - [Actuarial Mathematics](https://www.goodreads.com/book/show/1715653.Actuarial_Mathematics)
 - [Society of Actuaries Mortality and Morbidity Tables](https://mort.soa.org)
 - [Institute and Faculty of Actuaries Mortality and Morbidity Tables](https://www.actuaries.org.uk/learn-and-develop/continuous-mortality-investigation/cmi-mortality-and-morbidity-tables)
+- [Australian Government Actuary](https://aga.gov.au)
 - Standard actuarial notation and practices
 
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@@ -126,6 +126,7 @@ impl IFOAMortXLS {
         let structure = info_from_id.0;
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+        // TODO: url now also get from ONS not just IFOA
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