fix: fuzz testing (#98)

* fixed fuzz failure upload
* fixed: always upload cached fuzz corpus
* fixed: fuzz matrix should be compact

Signed-off-by: Frederic BIDON <fredbi@yahoo.com>

Author: fredbi

.github/workflows/fuzz-test.yml

@@ -39,7 +39,7 @@ jobs:
           fuzz_tests=$(\
             go test work -list Fuzz -json ./... |\
             jq  '.|select(.Action == "output")|select( (.Output|test("^(ok)|(\\?)"))|not )|{package: .Package, test: (.Output|gsub("\n";""))}'|\
-            jq --slurp \
+            jq -c --slurp \
           )
           export fuzz_tests
           echo "matrix<<EOF" >> "${GITHUB_OUTPUT}"
@@ -125,7 +125,7 @@ jobs:
           fi
 
           declare -i max_size_b=$(("${CORPUS_MAX_SIZE_MB}" * 1024 * 1024))
-          purged_files=$(purge "${purged_dir}" "${max_size_b}");
+          purged_files=$(purge "${CORPUS_DIR}" "${max_size_b}");
           echo "::notice:cache size is ${CURRENT_SIZE_MB} MB: purging oldest files to keep it under ${CORPUS_MAX_SIZE_MB} MB"
           if [[ ${purged_files} -gt 0 ]] ; then
             echo "::notice:removed ${purged_files} files to keep the cache size below ${CORPUS_MAX_SIZE_MB} MB"
@@ -145,7 +145,9 @@ jobs:
         name: Archive failed cases
         if: ${{ failure() }}
         run: |
-          tar czf "fuzzcase-${{ matrix.test }}.tgz" $(find "${{ matrix.package }}/testdata/fuzz" -type f)
+          # Package name needs to be reworked to account for v2 suffixes
+          folder=$(go list -f '{{ printf "%s" .Dir }}' '${{ matrix.package }}'
+          tar czf "fuzzcase-${{ matrix.test }}.tgz" $(find "${folder}/testdata/fuzz" -type f)
       -
         name: Upload failed cases
         if: ${{ failure() }}
@@ -157,9 +159,9 @@ jobs:
           name: '${{ runner.os }}-fuzz-corpus-failure'
           retention-days: 60
       -
-        name: Upload failed corpus
+        name: Upload current corpus
         # This is the current corpus, it does not contain the latest failed case
-        if: ${{ failure() }}
+        if: ${{ always() }}
         uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           path: ${{ env.CORPUS_DIR }}
@@ -168,5 +170,5 @@ jobs:
       -
         name: Report fuzz corpus cache size
         run: |
-          FINAL_SIZE=$(du -m "${CORPUS_DIR}"|cut -f1)
+          FINAL_SIZE=$(du -sm "${CORPUS_DIR}"|cut -f1)
           echo "::notice title=fuzz corpus size::${FINAL_SIZE}MB"