diff --git a/awx/main/tests/unit/models/test_inventory.py b/awx/main/tests/unit/models/test_inventory.py
new file mode 100644
index 0000000000..900881aa4c
--- /dev/null
+++ b/awx/main/tests/unit/models/test_inventory.py
@@ -0,0 +1,38 @@
+import pytest
+import mock
+from awx.main.models import (
+    UnifiedJob,
+    InventoryUpdate,
+    Job,
+)
+
+
+@pytest.fixture
+def dependent_job(mocker):
+    j = Job(id=3, name='I_am_a_job')
+    j.cancel = mocker.MagicMock(return_value=True)
+    return [j]
+
+
+def test_cancel(mocker, dependent_job):
+    with mock.patch.object(UnifiedJob, 'cancel', return_value=True) as parent_cancel:
+        iu = InventoryUpdate()
+
+        iu.get_dependent_jobs = mocker.MagicMock(return_value=dependent_job)
+        iu.save = mocker.MagicMock()
+        build_job_explanation_mock = mocker.MagicMock()
+        iu._build_job_explanation = mocker.MagicMock(return_value=build_job_explanation_mock)
+
+        iu.cancel()
+
+        parent_cancel.assert_called_with(job_explanation=None)
+        dependent_job[0].cancel.assert_called_with(job_explanation=build_job_explanation_mock)
+        
+
+def test__build_job_explanation():
+    iu = InventoryUpdate(id=3, name='I_am_an_Inventory_Update')
+
+    job_explanation = iu._build_job_explanation()
+
+    assert job_explanation == 'Previous Task Canceled: {"job_type": "%s", "job_name": "%s", "job_id": "%s"}' % \
+                              ('inventory_update', 'I_am_an_Inventory_Update', 3)