run tests on wasm32-wasip2 on CI

Author: folkertdev

.github/workflows/main.yml

@@ -21,6 +21,9 @@ jobs:
           - build: msrv
             os: ubuntu-latest
             rust: nightly
+          - build: wasm32
+            os: ubuntu-latest
+            rust: stable
           - build: macos
             os: macos-latest
             rust: stable
@@ -42,15 +45,25 @@ jobs:
       run: rustup update ${{ matrix.rust }} --no-self-update && rustup default ${{ matrix.rust }}
       shell: bash
       if: matrix.build != 'msrv'
-    - name: Install Rust (rustup)
+    - name: Install wasmtime
+      run: |
+        curl https://wasmtime.dev/install.sh -sSf | bash
+        /home/runner/.wasmtime/bin/wasmtime --version
+      if: matrix.build == 'wasm32'
+    - name: Configure Toolchain (msrv)
       run: |
         # extract the MSRV from the Cargo.toml's `rust-version`
         MSRV=$(awk -F'"' '/rust-version/ {print $2}' Cargo.toml)
         TOOLCHAIN="${MSRV}-x86_64-unknown-linux-gnu"
         rustup update $TOOLCHAIN --no-self-update && rustup default $TOOLCHAIN
       shell: bash
       if: matrix.build == 'msrv'
-    - name: Run cargo doc, deny warnings
+    - name: Install target (wasm32)
+      run: |
+        rustup target add wasm32-wasip2
+      shell: bash
+      if: matrix.build == 'wasm32'
+    - name: Run cargo doc, deny warnings (bzip2-sys)
       env:
         RUSTDOCFLAGS: "-D warnings"
       run: |
@@ -61,8 +74,16 @@ jobs:
           RUSTDOCFLAGS: "-Dwarnings"
       if: matrix.build != 'msrv'
       run: cargo doc -p bzip2 --no-deps --no-default-features --features libbz2-rs-sys
-    - run: cargo test
-    - run: cargo test --no-default-features --features libbz2-rs-sys
+    - name: Configure wasm32 env vars
+      run: |
+        echo "CARGO_TARGET_WASM32_WASIP2_RUNNER=/home/runner/.wasmtime/bin/wasmtime" >> $GITHUB_ENV
+        echo "CARGO_BUILD_TARGET=wasm32-wasip2" >> $GITHUB_ENV
+      if: matrix.build == 'wasm32'
+    - name: Run cargo test (bzip2-sys)
+      run: cargo test
+      if: matrix.build != 'wasm32'
+    - name: Run cargo test (libbzip2-rs-sys)
+      run: cargo test --no-default-features --features libbz2-rs-sys
       if: matrix.build != 'msrv'
 
   rustfmt: