fix(git): default branch convention main -> master

tests/integration/test_default_branch_master.py

@@ -0,0 +1,101 @@
+"""Default branch convention resolves to ``master`` (user-repo convention).
+
+Driven by the real Postgres ``db_session`` fixture so the ORM column default
+is exercised by the same SQLAlchemy flush path production uses.
+"""
+
+from __future__ import annotations
+
+from types import SimpleNamespace
+from typing import TYPE_CHECKING
+from uuid import uuid4
+
+import pytest
+from roboco.db.tables import AgentTable, ProjectTable
+from roboco.models import AgentRole, AgentStatus, Team
+from roboco.services.git import GitService
+from roboco.services.task import TaskService
+
+if TYPE_CHECKING:
+    from sqlalchemy.ext.asyncio import AsyncSession
+
+
+async def _seed_creator(db_session: AsyncSession) -> AgentTable:
+    agent = AgentTable(
+        id=uuid4(),
+        name="System",
+        slug=f"system-{uuid4().hex[:8]}",
+        role=AgentRole.SYSTEM,
+        team=None,
+        status=AgentStatus.ACTIVE,
+        model_config={},
+        system_prompt="system",
+        capabilities=[],
+        permissions={},
+        metrics={},
+    )
+    db_session.add(agent)
+    await db_session.flush()
+    return agent
+
+
+@pytest.mark.asyncio
+async def test_project_default_branch_defaults_to_master(
+    db_session: AsyncSession,
+) -> None:
+    """A project inserted without a ``default_branch`` resolves to ``master``."""
+    creator = await _seed_creator(db_session)
+    project = ProjectTable(
+        id=uuid4(),
+        name="No Branch Project",
+        slug=f"proj-{uuid4().hex[:8]}",
+        git_url="https://github.com/example/no-branch.git",
+        assigned_cell=Team.BACKEND,
+        created_by=creator.id,
+    )
+    db_session.add(project)
+    await db_session.flush()
+    await db_session.refresh(project)
+
+    assert project.default_branch == "master"
+
+
+@pytest.mark.asyncio
+async def test_resolve_parent_branch_falls_back_to_master(
+    db_session: AsyncSession,
+) -> None:
+    """The parent-branch resolver falls back to ``master`` when the project
+    default is falsy."""
+    svc = TaskService(db_session)
+    task = SimpleNamespace(id=uuid4(), parent_task_id=None)
+    project = SimpleNamespace(default_branch="")
+
+    branch = await svc._resolve_parent_branch(task, project)
+
+    assert branch == "master"
+
+
+@pytest.mark.asyncio
+async def test_git_project_default_branch_falls_back_to_master(
+    db_session: AsyncSession,
+) -> None:
+    """The git default-branch lookup falls back to ``master`` when the stored
+    project default is falsy."""
+    creator = await _seed_creator(db_session)
+    slug = f"proj-{uuid4().hex[:8]}"
+    project = ProjectTable(
+        id=uuid4(),
+        name="Falsy Branch Project",
+        slug=slug,
+        git_url="https://github.com/example/falsy-branch.git",
+        default_branch="",
+        assigned_cell=Team.BACKEND,
+        created_by=creator.id,
+    )
+    db_session.add(project)
+    await db_session.flush()
+
+    svc = GitService(db_session)
+    branch = await svc._project_default_branch(slug)
+
+    assert branch == "master"