ci: run unit tests in separate processes (#1559)

.github/workflows/unit_test.yml

@@ -37,14 +37,17 @@ jobs:
           target/
         key: ${{ matrix.os }}-${{ runner.os }}-${{ runner.arch }}-cargo-test-${{ hashFiles('**/Cargo.lock') }}
 
+    - uses: taiki-e/install-action@nextest
     - name: Run Rust unit-test
       run: |
-        make test
+        make test-in-separate-processes
         du -hd1 target/debug/
         echo "reduce the cargo cache size"
         rm -rf target/debug/examples
         rm -rf target/debug/incremental
         du -hd1 target/debug/
+        ls -l ~/.cargo/bin/
+        rm -f ~/.cargo/bin/cargo-nextest
 
   other-unit-test:
     runs-on: ubuntu-latest

Makefile

@@ -7,6 +7,10 @@ CARGO := cargo
 test:
 	${CARGO} test ${VERBOSE} --all -- --nocapture
 
+# Since Axon uses global variables, run all tests in one process may cause unexpected errors.
+test-in-separate-processes:
+	cargo nextest run --workspace --no-fail-fast --hide-progress-bar --failure-output final
+
 doc:
 	cargo doc --all --no-deps