diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 7f3a119..00057c6 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -34,3 +34,28 @@ jobs:
           file: docker/Dockerfile.test
           build-contexts: |
             base_img=docker-image://${{ env.BASE_TAG }}
+
+  test-json:
+    name: Test JSON Conversion
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out Git repository
+        uses: actions/checkout@v2
+
+      - uses: docker/setup-buildx-action@v2
+        with:
+          driver: docker
+
+      - name: Build Test Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: docker/Dockerfile.test
+          tags: user/xrootd-cmstfc:test
+          build-contexts: |
+            base_img=docker-image://${{ env.BASE_TAG }}
+
+      - name: Unit test
+        run: |
+          docker run --rm user/xrootd-cmstfc:test python3 -m pytest -v
+
diff --git a/tests/test_json.py b/tests/test_json.py
new file mode 100644
index 0000000..a2617d3
--- /dev/null
+++ b/tests/test_json.py
@@ -0,0 +1,23 @@
+import pytest
+import subprocess
+
+json_file = "file:/xrootd/tests/storage.json?volume={}&protocol={}"
+test_data =[
+    ("/store/temp/test","TEST_JSON","root","/store/test"),
+    ("/store/temp/test","TEST_JSON","prefix","root://cern-vm//cms/store/temp/test"),
+    ("/test/mc/file0","CMSSST_TEST","root","root://host.domain/aaa/bbb//test/mc/file0"),
+    ("/other/mc/file1","CMSSST_TEST","root","root://host.domain/aaa/bbb//store/nomc/file1/trailer"),
+    ("/other/mc/file2","CMSSST_TEST","root","root://host.domain/aaa/bbb//store/nomc/file2/trailer"),
+    ("store/mc/file3","CMSSST_TEST","root","root://host.domain/aaa/bbb/never/first/xmc/file3/trailer"),
+    ("other/mc/file4","CMSSST_TEST","root","root://host.domain/aaa/bbb/other/xmc/file4"),
+    ("/store/data/file5","CMSSST_TEST","root","root://host.domain/aaa/bbb//store/first/data/file5/trailer")
+]
+
+@pytest.mark.parametrize("lfn,volume,protocol,pfn", test_data)
+def test_json(lfn,volume,protocol,pfn):
+    output = subprocess.check_output([
+        "./build/test_json.o", lfn, json_file.format(volume,protocol)],encoding='utf-8')
+
+    assert pfn == output.strip()
+
+