ci: add test coverage artifact

Author: xi xiao

.github/workflows/pr-ci-merge-main.yml

@@ -49,10 +49,10 @@ jobs:
         with:
           components: clippy, rustfmt
 
-      # Combine security tools installation
-      - name: Install Security Tools
+      # Tools installation
+      - name: Install Tools
         run: |
-          cargo install cargo-audit cargo-deny --locked
+          cargo install cargo-audit cargo-deny cargo-tarpaulin --locked
 
       # Group formatting and linting checks
       - name: Code Quality Checks
@@ -63,11 +63,16 @@ jobs:
       # Run tests with coverage
       - name: Run Tests
         run: |
-          cargo install cargo-tarpaulin
-          cargo tarpaulin --out Xml
+          cargo tarpaulin --out Xml --output-dir coverage.xml
 
-      # Add test coverage reporting
-      - name: Upload Coverage
+      # Upload test result as artifact
+      - name: Upload Coverage Report
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage.xml
+
+      - name: Upload Coverage to Codev
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
@@ -86,4 +91,4 @@ jobs:
             ~/.cargo/bin/cargo-audit
             ~/.cargo/bin/cargo-deny
             ~/.cargo/bin/cargo-tarpaulin
-          key: ${{ runner.os }}-cargo-tools-${{ hashFiles('**/Cargo.lock') }}
+          key: ${{ runner.os }}-cargo-tools-${{ hashFiles('**/Cargo.lock') }}