1 files changed, 34 insertions, 0 deletions
diff --git a/tests/frontend/__init__.py b/tests/frontend/__init__.py
index 8cf7625a9..2eadf1519 100644
--- a/tests/frontend/__init__.py
+++ b/tests/frontend/__init__.py
@@ -1,4 +1,5 @@
 import os
+from tests.testutils import create_repo
 from buildstream import _yaml
 
 
@@ -8,3 +9,36 @@ def configure_project(path, config):
     config['name'] = 'test'
     config['element-path'] = 'elements'
     _yaml.dump(config, os.path.join(path, 'project.conf'))
+
+
+# generate_junction()
+#
+# Generates a junction element with a git repository
+#
+# Args:
+#    tmpdir: The tmpdir fixture, for storing the generated git repo
+#    subproject_path: The path for the subproject, to add to the git repo
+#    junction_path: The location to store the generated junction element
+#    store_ref: Whether to store the ref in the junction.bst file
+#
+# Returns:
+#    (str): The ref
+#
+def generate_junction(tmpdir, subproject_path, junction_path, *, store_ref=True):
+    # Create a repo to hold the subproject and generate
+    # a junction element for it
+    #
+    repo = create_repo('git', str(tmpdir))
+    source_ref = ref = repo.create(subproject_path)
+    if not store_ref:
+        source_ref = None
+
+    element = {
+        'kind': 'junction',
+        'sources': [
+            repo.source_config(ref=source_ref)
+        ]
+    }
+    _yaml.dump(element, junction_path)
+
+    return ref