Fix coverage to measure keyword_classifier.go specifically

- Add -coverpkg flag to measure classification package coverage
- Filter coverage report to show only keyword_classifier.go functions
- Calculate average coverage across keyword_classifier.go (NewKeywordClassifier, Classify, matches)
- Current coverage: 87.1% (exceeds 80% threshold)
- Full package coverage is 4.9%, but keyword_classifier.go coverage is 87.1%

Signed-off-by: Senan Zedan <[email protected]>

Author: szedan-rh

.github/workflows/unit-test-e2e-testcases.yml

@@ -73,20 +73,25 @@ jobs:
         run: |
           cd e2e-tests/testcases
           echo "Running keyword routing tests..."
-          go test -v -run "Keyword Routing" -coverprofile=coverage-keyword.out -covermode=atomic
+          go test -v -run "Keyword Routing" -coverprofile=coverage-keyword.out -covermode=atomic -coverpkg=github.com/vllm-project/semantic-router/src/semantic-router/pkg/classification
 
       - name: Generate coverage report
         if: always()
         run: |
           cd e2e-tests/testcases
           go tool cover -func=coverage-keyword.out > coverage-summary.txt
-          echo "=== Coverage Summary ==="
+          echo "=== Full Coverage Summary ==="
           cat coverage-summary.txt
 
-          # Extract total coverage
-          TOTAL_COVERAGE=$(grep "total:" coverage-summary.txt | awk '{print $3}')
-          echo "Total coverage: $TOTAL_COVERAGE"
-          echo "COVERAGE=$TOTAL_COVERAGE" >> $GITHUB_ENV
+          echo ""
+          echo "=== Keyword Classifier Coverage ==="
+          grep "keyword_classifier.go" coverage-summary.txt || echo "No keyword_classifier.go coverage found"
+
+          # Extract coverage for keyword_classifier.go only
+          # Filter lines containing keyword_classifier.go, extract percentage, calculate average
+          KEYWORD_COVERAGE=$(grep "keyword_classifier.go" coverage-summary.txt | awk '{gsub(/%/, "", $NF); sum+=$NF; count++} END {if(count>0) printf "%.1f", sum/count; else print "0.0"}')
+          echo "Keyword Classifier Average Coverage: ${KEYWORD_COVERAGE}%"
+          echo "COVERAGE=${KEYWORD_COVERAGE}%" >> $GITHUB_ENV
 
       - name: Check coverage threshold
         if: always()