feat: include key metadata in Job representation (#964)

Author: plamut

google/cloud/bigquery/job/base.py

@@ -722,6 +722,14 @@ def cancelled(self):
             and self.error_result.get("reason") == _STOPPED_REASON
         )
 
+    def __repr__(self):
+        result = (
+            f"{self.__class__.__name__}<"
+            f"project={self.project}, location={self.location}, id={self.job_id}"
+            ">"
+        )
+        return result
+
 
 class _JobConfig(object):
     """Abstract base class for job configuration objects.

tests/unit/job/test_base.py

@@ -1043,6 +1043,12 @@ def test_cancelled_w_error_result_w_stopped(self):
 
         self.assertTrue(job.cancelled())
 
+    def test_repr(self):
+        client = _make_client(project="project-foo")
+        job = self._make_one("job-99", client)
+        job._properties.setdefault("jobReference", {})["location"] = "ABC"
+        assert repr(job) == "_AsyncJob<project=project-foo, location=ABC, id=job-99>"
+
 
 class Test_JobConfig(unittest.TestCase):
     JOB_TYPE = "testing"