Add real worker version values to the ML report

Closes #97 (closed)

tests/test_reporting.py

 # -*- coding: utf-8 -*-
+import json
+import uuid
+from datetime import datetime
+from tempfile import NamedTemporaryFile
+
 import pytest
 from apistar.exceptions import ErrorResponse
 
@@ -6,10 +11,16 @@ from arkindex_worker.reporting import Reporter
 
 
 def test_init():
-    reporter = Reporter("worker")
+    version_id = str(uuid.uuid4())
+    reporter = Reporter(name="Worker", slug="worker-slug", version=version_id)
     assert "started" in reporter.report_data
     del reporter.report_data["started"]
-    assert reporter.report_data == {"slug": "worker", "version": "0.0", "elements": {}}
+    assert reporter.report_data == {
+        "name": "Worker",
+        "slug": "worker-slug",
+        "version": version_id,
+        "elements": {},
+    }
 
 
 def test_process():
@@ -213,3 +224,32 @@ def test_error():
             "content": '{"coffee": "Can\'t touch this"}',
         },
     ]
+
+
+def test_reporter_save(mocker):
+    datetime_mock = mocker.MagicMock()
+    datetime_mock.utcnow.return_value = datetime(2000, 1, 1)
+    mocker.patch("arkindex_worker.reporting.datetime", datetime_mock)
+    version_id = str(uuid.uuid4())
+    reporter = Reporter(name="Worker", slug="worker-slug", version=version_id)
+    reporter.add_element("myelement", type="text_line", type_count=4)
+    with NamedTemporaryFile() as f:
+        reporter.save(f.name)
+        exported_data = json.load(f)
+    assert exported_data == {
+        "name": "Worker",
+        "slug": "worker-slug",
+        "started": "2000-01-01T00:00:00",
+        "version": version_id,
+        "elements": {
+            "myelement": {
+                "classifications": {},
+                "elements": {"text_line": 4},
+                "entities": [],
+                "errors": [],
+                "metadata": [],
+                "started": "2000-01-01T00:00:00",
+                "transcriptions": 0,
+            }
+        },
+    }