Merge pull request #1800 from psacawa/post-merge-pr

Add support for post-merge hooks

tests/commands/install_uninstall_test.py

@@ -762,6 +762,48 @@ def test_post_commit_integration(tempdir_factory, store):
         assert os.path.exists('post-commit.tmp')
 
 
+def test_post_merge_integration(tempdir_factory, store):
+    path = git_dir(tempdir_factory)
+    config = [
+        {
+            'repo': 'local',
+            'hooks': [{
+                'id': 'post-merge',
+                'name': 'Post merge',
+                'entry': 'touch post-merge.tmp',
+                'language': 'system',
+                'always_run': True,
+                'verbose': True,
+                'stages': ['post-merge'],
+            }],
+        },
+    ]
+    write_config(path, config)
+    with cwd(path):
+        #  create a simple diamond of commits for a non-trivial merge
+        open('init', 'a').close()
+        cmd_output('git', 'add', '.')
+        git_commit()
+
+        open('master', 'a').close()
+        cmd_output('git', 'add', '.')
+        git_commit()
+
+        cmd_output('git', 'checkout', '-b', 'branch', 'HEAD^')
+        open('branch', 'a').close()
+        cmd_output('git', 'add', '.')
+        git_commit()
+
+        cmd_output('git', 'checkout', 'master')
+        install(C.CONFIG_FILE, store, hook_types=['post-merge'])
+        retc, stdout, stderr = cmd_output_mocked_pre_commit_home(
+            'git', 'merge', 'branch',
+            tempdir_factory=tempdir_factory,
+        )
+        assert retc == 0
+        assert os.path.exists('post-merge.tmp')
+
+
 def test_post_checkout_integration(tempdir_factory, store):
     path = git_dir(tempdir_factory)
     config = [