Merge pull request #746 from zcash/test-32-bit

CI: Run tests on 32-bit target

.github/workflows/ci.yml

@@ -33,6 +33,37 @@ jobs:
             ${{ steps.prepare.outputs.feature-flags }}
             ${{ matrix.extra_flags }}
 
+  test-32-bit:
+    name: Test on i686-unknown-linux-gnu${{ matrix.name_suffix }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        stage: [stable, beta, nightly]
+        include:
+          - stage: beta
+            name_suffix: " with beta features"
+          - stage: nightly
+            name_suffix: " with nightly features"
+
+    steps:
+      - uses: actions/checkout@v3
+      - id: prepare
+        uses: ./.github/actions/prepare
+        with:
+          beta-features: ${{ matrix.stage == 'beta' }}
+          nightly-features: ${{ matrix.stage == 'nightly' }}
+      - name: Install cross-platform support dependencies
+        run: sudo apt install gcc-multilib
+      - run: rustup target add i686-unknown-linux-gnu
+      - name: Run tests
+        run: >
+          cargo test
+          --verbose
+          --release
+          --workspace
+          --target i686-unknown-linux-gnu
+          ${{ steps.prepare.outputs.feature-flags }}
+
   build:
     name: Build target ${{ matrix.target }}
     runs-on: ubuntu-latest