chore: add test coverage reporting job to CI

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ on:
     - '*.md'
 
 env:
-  CARGO_MAKE_TOOLCHAIN: nightly-2024-03-10
+  CARGO_MAKE_TOOLCHAIN: nightly-2024-05-15
 
 jobs:
   compiler:
@@ -128,3 +128,34 @@ jobs:
       with:
         command: make
         args: check-format
+
+  test_coverage:
+    name: test-coverage
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: ${{ env.CARGO_MAKE_TOOLCHAIN }}
+        override: true
+    - name: Cache Cargo
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+        key: ${{ github.workflow }}-${{ github.job }}-toolchain-${{ env.CARGO_MAKE_TOOLCHAIN }}
+    - name: Install cargo-make
+      uses: actions-rs/cargo@v1
+      with:
+        command: install
+        args: cargo-make
+    - name: Run tests and generate code coverage
+      run: |
+        cargo make test-rust-cov
+    - name: Push code coverage results to coveralls.io
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        path-to-lcov: ./lcov.info

.github/workflows/release.yml

@@ -16,7 +16,7 @@ on:
       - main
 
 env:
-  CARGO_MAKE_TOOLCHAIN: nightly-2024-03-10
+  CARGO_MAKE_TOOLCHAIN: nightly-2024-05-15
 
 jobs:
   release-plz:

Makefile.toml

@@ -200,7 +200,9 @@ args = ["target", "add", "wasm32-unknown-unknown"]
 category = "Test"
 description = "Install wasm32-wasi target"
 command = "rustup"
-args = ["target", "add", "wasm32-wasi"]
+# `wasm32-wasi` target is renamed to `wasm32-wasip1` 
+# https://blog.rust-lang.org/2024/04/09/updates-to-rusts-wasi-targets.html
+args = ["target", "add", "wasm32-wasip1"]
 
 [tasks.install-rust-src]
 category = "Test"
@@ -212,7 +214,13 @@ args = ["component", "add", "rust-src"]
 category = "Test"
 description = "Install cargo-component extension"
 command = "cargo"
-args = ["install", "[email protected]"]
+args = ["install", "[email protected]"]
+
+[tasks.install-cargo-tarpaulin]
+category = "Test"
+description = "Install cargo-tarpaulin extension"
+command = "cargo"
+args = ["install", "cargo-tarpaulin"]
 
 [tasks.test-rust]
 category = "Test"
@@ -246,6 +254,24 @@ args = [
 ]
 dependencies = ["litcheck"]
 
+[tasks.test-rust-cov]
+category = "Test"
+description = "Runs tests written in Rust and generates code coverage report"
+command = "cargo"
+args = [
+    "tarpaulin",
+    "--timeout=360",
+    "--out",
+    "lcov",
+]
+dependencies = [
+    "install-wasm-target",
+    "install-wasm-wasi-target",
+    "install-rust-src",
+    "install-cargo-component",
+    "install-cargo-tarpaulin",
+]
+
 [tasks.litcheck]
 category = "Test"
 description = "Set up the litcheck utility"

codegen/masm/src/codegen/emitter.rs

@@ -188,7 +188,7 @@ impl<'b, 'f: 'b> BlockEmitter<'b, 'f> {
         // Continue normally, by emitting the contents of the block based on the given schedule
         for op in block_schedule.iter() {
             match op {
-                ScheduleOp::Init(_) | ScheduleOp::Enter(_) | ScheduleOp::Exit => continue,
+                ScheduleOp::Exit => continue,
                 ScheduleOp::Inst(inst_info) => self.emit_inst(inst_info, tasks),
                 ScheduleOp::Drop(value) => {
                     let mut emitter = self.emitter();