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path: root/tests/testutils/junction.py
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from buildstream import _yaml
from buildstream.testing import create_repo


# 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, options={}):
    # 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)]}

    if options:
        element["config"] = {"options": options}

    _yaml.roundtrip_dump(element, junction_path)

    return ref