Add Emscripten tests (#196)

See #194 This installs (and caches) the emsdk toolchain at the last version compatible w/ stable rust. It also tests on both asmjs and wasm32, uses node by default, and works around an asm.js bug.
rust-random · Jan 5, 2021 · 9d7a76c · 9d7a76c
1 parent e29ed04
commit 9d7a76c
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diff --git a/.cargo/config b/.cargo/config
@@ -3,3  3,7 @@
 runner = 'wasm-bindgen-test-runner'
 [target.wasm32-wasi]
 runner = 'wasmtime'
 
 # Just run on node by default (that's where emscripten is tested)
 [target.'cfg(target_os = "emscripten")']
 runner = 'node'
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -125,7  125,6 @@ jobs:
           override: true
       - run: cargo test --features=std
 
-  # TODO: Add emscripten when it's working with Cross
   cross-tests:
     name: Cross Test
     runs-on: ubuntu-latest
@@ -224,6  223,40 @@ jobs:
           mv /tmp/wasmtime ~/.cargo/bin
       - run: cargo test --target wasm32-wasi
 
   emscripten-tests:
     name: Emscripten tests
     runs-on: ubuntu-latest
     env:
       EMSDK_VERSION: 1.39.20 # Last emsdk compatible with Rust's LLVM 11
     steps:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
           toolchain: stable
       - run: rustup target add wasm32-unknown-emscripten
       - run: rustup target add asmjs-unknown-emscripten
       - name: Cache emsdk
         id: cache-emsdk
         uses: actions/cache@v2
         with:
           path: ~/emsdk
           key: ${{ runner.os }}-${{ env.EMSDK_VERSION }}-emsdk
       - name: Install emsdk
         if: steps.cache-emsdk.outputs.cache-hit != 'true'
         run: |
           git clone https://github.com/emscripten-core/emsdk.git ~/emsdk
           cd ~/emsdk
           ./emsdk install $EMSDK_VERSION
           ./emsdk activate $EMSDK_VERSION
       - run: echo "$HOME/emsdk/upstream/emscripten" >> $GITHUB_PATH
       - name: wasm test
         run: cargo test --target=wasm32-unknown-emscripten --features=std
       - name: asm.js test
         run: | # Debug info breaks on asm.js
           RUSTFLAGS="$RUSTFLAGS -C debuginfo=0"
           cargo test --target=asmjs-unknown-emscripten --features=std
 
   build:
     name: Build only
     runs-on: ubuntu-latest