Add more tests

Author: 0xGeorgii

.github/workflows/coverage.yml

@@ -0,0 +1,63 @@
+name: Coverage
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools-preview
+      
+      - name: Install cargo-llvm-cov
+        run: cargo install cargo-llvm-cov
+      
+      - name: Run tests with coverage
+        run: |
+          cargo llvm-cov --workspace --lib \
+            --exclude wasm-runner \
+            --exclude inference-playground-server \
+            --lcov --output-path lcov.info
+      
+      - name: Generate coverage summary
+        run: |
+          cargo llvm-cov --workspace --lib \
+            --exclude wasm-runner \
+            --exclude inference-playground-server \
+            --summary-only
+      
+      - name: Check AST module coverage threshold
+        run: |
+          # Extract coverage for AST files
+          COVERAGE=$(cargo llvm-cov --workspace --lib \
+            --exclude wasm-runner \
+            --exclude inference-playground-server \
+            --summary-only 2>&1 | \
+            grep 'ast/src' | \
+            awk '{sum+=$7; count++} END {if (count>0) print sum/count; else print 0}')
+          
+          echo "Average AST module coverage: ${COVERAGE}%"
+          
+          # Threshold currently at 40% (actual current coverage)
+          # Target is 98%, increase gradually as tests are added
+          THRESHOLD=40
+          
+          if (( $(echo "$COVERAGE < $THRESHOLD" | bc -l) )); then
+            echo "Coverage ${COVERAGE}% is below threshold ${THRESHOLD}%"
+            exit 1
+          fi
+      
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          files: lcov.info
+          fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}