feat(rust): code coverage (#36)

Author: billf

.github/workflows/test.yaml

@@ -27,6 +27,7 @@ jobs:
         with:
           save-if: ${{ github.ref == 'refs/heads/master' }}
           cache-all-crates: true
+      - uses: taiki-e/install-action@cargo-llvm-cov
 
       - name: Install devenv.sh
         run: nix profile install nixpkgs#devenv

Cargo.toml

@@ -1,9 +1,14 @@
 [workspace]
 resolver = "3"
 members = [
+  ".",
   "tests/runner",
   "tests/wasm/[a-z]*",
 ]
+default-members = [
+  ".",
+  "tests/runner",
+]
 
 [package]
 name = "wasm-trampoline"

devenv.nix

@@ -23,6 +23,15 @@
       "wasm32-wasip2"
       "wasm32v1-none"
     ];
+    components = [
+      "cargo"
+      "clippy"
+      "clippy-preview"
+      "rust-analyzer"
+      "rustc"
+      "rustfmt"
+      "llvm-tools-preview"
+    ];
   };
 
   processes = lib.optionalAttrs (!config.devenv.isTesting) {
@@ -35,6 +44,7 @@
     cargo build --workspace --target wasm32-wasip2
     cargo fmt --check --all
     tests/runner/build.sh
+    cargo llvm-cov  run --bin runner -p runner --release
   '';
 
   git-hooks.hooks.nixfmt-rfc-style.enable = true;

tests/wasm/.cargo/config.toml

@@ -1,8 +1,10 @@
 [build]
-target = ["wasm32-unknown-unknown"]
+target = ["wasm32-unknown-unknown", "wasm32-wasip2"]
 
 [target.wasm32-wasip2]
 runner = "wasmtime"
+[target.wasm32-unknown-unknown]
+runner = "wasmtime"
 
 [profile.dev]
 panic = "abort"