get coverage from running pkgx (#1072)

Author: mxcl

.github/workflows/ci.yml

@@ -65,35 +65,64 @@ jobs:
         env:
           RUSTFLAGS: "-D warnings"
 
-  smoke:
+  coverage-unit:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-    needs: [check]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
-      - run: cargo run --all-features -- git --version
+      - run: cargo install cargo-tarpaulin
+      - run: cargo tarpaulin -o lcov --output-dir coverage
+      - uses: coverallsapp/github-action@v2
+        with:
+          path-to-lcov: coverage/lcov.info
+          parallel: true
+          flag-name: ${{ matrix.os }}
 
-  coverage:
+  coverage-integration:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
-      - run: cargo install cargo-tarpaulin
-      - run: cargo tarpaulin -o lcov --output-dir coverage
+
+      - name: build
+        run: |
+          RUSTFLAGS="-C instrument-coverage" cargo build
+          echo "$PWD/target/debug" >> $GITHUB_PATH
+
+      - name: run integrations
+        run: |
+          pkgx --help
+          pkgx --version
+          pkgx +git
+          pkgx +git --json
+          pkgx git --version
+
+      - name: generate coverage
+        run: |
+          cargo install rustfilt
+          pkgx +llvm.org -- llvm-profdata merge -sparse default_*.profraw -o default.profdata
+          pkgx +llvm.org -- llvm-cov export \
+            ./target/debug/pkgx \
+            --format=lcov \
+             --ignore-filename-regex="$HOME/.cargo" \
+            --instr-profile=default.profdata \
+            -Xdemangler=rustfilt \
+            > lcov.info
+
       - uses: coverallsapp/github-action@v2
         with:
-          path-to-lcov: coverage/lcov.info
+          path-to-lcov: lcov.info
           parallel: true
           flag-name: ${{ matrix.os }}
 
   upload-coverage:
-    needs: coverage
+    needs: [coverage-unit, coverage-integration]
     if: ${{ always() }}
     runs-on: ubuntu-latest
     steps: