Enable test_post*

This requires some updating of how merger data construction gets
handled between Refs and Changes.

Change-Id: Icd81a95565ab137b98d6a8ac52e262487d412534
Story: 2000773
Task: 3389
diff --git a/tests/base.py b/tests/base.py
index b343655..af239ad 100755
--- a/tests/base.py
+++ b/tests/base.py
@@ -477,6 +477,9 @@
     def getGitUrl(self, project):
         return os.path.join(self.upstream_root, project.name)
 
+    def _getGitwebUrl(self, project, sha=None):
+        return self.getGitwebUrl(project, sha)
+
 
 class BuildHistory(object):
     def __init__(self, **kw):
diff --git a/tests/fixtures/config/single-tenant/git/layout-dont-ignore-ref-deletes/zuul.yaml b/tests/fixtures/config/single-tenant/git/layout-dont-ignore-ref-deletes/zuul.yaml
new file mode 100644
index 0000000..30e574a
--- /dev/null
+++ b/tests/fixtures/config/single-tenant/git/layout-dont-ignore-ref-deletes/zuul.yaml
@@ -0,0 +1,23 @@
+- pipeline:
+    name: post
+    manager: independent
+    source:
+      gerrit
+    trigger:
+      gerrit:
+        - event: ref-updated
+          ref: ^(?!refs/).*$
+          ignore-deletes: False
+
+- job:
+    name: project-post
+    nodes:
+      - name: static
+        image: ubuntu-xenial
+
+- project:
+    name: org/project
+    post:
+      jobs:
+        - project-post
+
diff --git a/tests/fixtures/layout-dont-ignore-deletes.yaml b/tests/fixtures/layout-dont-ignore-deletes.yaml
deleted file mode 100644
index 1cf3c71..0000000
--- a/tests/fixtures/layout-dont-ignore-deletes.yaml
+++ /dev/null
@@ -1,16 +0,0 @@
-includes:
-  - python-file: custom_functions.py
-
-pipelines:
-  - name: post
-    manager: IndependentPipelineManager
-    trigger:
-      gerrit:
-        - event: ref-updated
-          ref: ^(?!refs/).*$
-          ignore-deletes: False
-
-projects:
-  - name: org/project
-    post:
-      - project-post
diff --git a/tests/test_scheduler.py b/tests/test_scheduler.py
index 5092cba..ac701c5 100755
--- a/tests/test_scheduler.py
+++ b/tests/test_scheduler.py
@@ -1004,7 +1004,6 @@
         self.assertEqual(C.reported, 2)
         self.assertEqual(len(self.history), 6)
 
-    @skip("Disabled for early v3 development")
     def test_post(self):
         "Test that post jobs run"
 
@@ -1027,7 +1026,6 @@
         self.assertEqual(len(self.history), 1)
         self.assertIn('project-post', job_names)
 
-    @skip("Disabled for early v3 development")
     def test_post_ignore_deletes(self):
         "Test that deleting refs does not trigger post jobs"
 
@@ -1050,12 +1048,10 @@
         self.assertEqual(len(self.history), 0)
         self.assertNotIn('project-post', job_names)
 
-    @skip("Disabled for early v3 development")
     def test_post_ignore_deletes_negative(self):
         "Test that deleting refs does trigger post jobs"
 
-        self.updateConfigLayout(
-            'tests/fixtures/layout-dont-ignore-deletes.yaml')
+        self.updateConfigLayout('layout-dont-ignore-ref-deletes')
         self.sched.reconfigure(self.config)
 
         e = {