74 lines
2.9 KiB
Python
74 lines
2.9 KiB
Python
import pytest
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from src.models import Ticket
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from src.dag_engine import TrackDAG
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def test_get_ready_tasks_linear():
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t1 = Ticket(id="T1", description="desc", status="todo")
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t2 = Ticket(id="T2", description="desc", status="todo", depends_on=["T1"])
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dag = TrackDAG([t1, t2])
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ready = dag.get_ready_tasks()
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assert len(ready) == 1
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assert ready[0].id == "T1"
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def test_get_ready_tasks_branching():
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t1 = Ticket(id="T1", description="desc", status="completed")
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t2 = Ticket(id="T2", description="desc", status="todo", depends_on=["T1"])
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t3 = Ticket(id="T3", description="desc", status="todo", depends_on=["T1"])
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dag = TrackDAG([t1, t2, t3])
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ready = dag.get_ready_tasks()
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assert len(ready) == 2
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ids = [t.id for t in ready]
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assert "T2" in ids
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assert "T3" in ids
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def test_has_cycle_no_cycle():
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t1 = Ticket(id="T1", description="desc", status="todo")
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t2 = Ticket(id="T2", description="desc", status="todo", depends_on=["T1"])
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dag = TrackDAG([t1, t2])
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assert dag.has_cycle() is False
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def test_has_cycle_direct_cycle():
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t1 = Ticket(id="T1", description="desc", status="todo", depends_on=["T2"])
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t2 = Ticket(id="T2", description="desc", status="todo", depends_on=["T1"])
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dag = TrackDAG([t1, t2])
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assert dag.has_cycle() is True
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def test_has_cycle_indirect_cycle():
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t1 = Ticket(id="T1", description="desc", status="todo", depends_on=["T3"])
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t2 = Ticket(id="T2", description="desc", status="todo", depends_on=["T1"])
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t3 = Ticket(id="T3", description="desc", status="todo", depends_on=["T2"])
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dag = TrackDAG([t1, t2, t3])
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assert dag.has_cycle() is True
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def test_has_cycle_complex_no_cycle():
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t1 = Ticket(id="T1", description="desc", status="todo")
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t2 = Ticket(id="T2", description="desc", status="todo", depends_on=["T1"])
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t3 = Ticket(id="T3", description="desc", status="todo", depends_on=["T1"])
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t4 = Ticket(id="T4", description="desc", status="todo", depends_on=["T2", "T3"])
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dag = TrackDAG([t1, t2, t3, t4])
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assert dag.has_cycle() is False
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def test_get_ready_tasks_multiple_deps():
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t1 = Ticket(id="T1", description="desc", status="completed")
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t2 = Ticket(id="T2", description="desc", status="todo")
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t3 = Ticket(id="T3", description="desc", status="todo", depends_on=["T1", "T2"])
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dag = TrackDAG([t1, t2, t3])
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# Only T2 is ready because T3 depends on T2 (todo)
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ready = dag.get_ready_tasks()
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assert len(ready) == 1
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assert ready[0].id == "T2"
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def test_topological_sort():
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t1 = Ticket(id="T1", description="desc", status="todo")
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t2 = Ticket(id="T2", description="desc", status="todo", depends_on=["T1"])
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dag = TrackDAG([t2, t1]) # Out of order input
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sorted_tasks = dag.topological_sort()
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assert [t.id for t in sorted_tasks] == ["T1", "T2"]
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def test_topological_sort_cycle():
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t1 = Ticket(id="T1", description="desc", status="todo", depends_on=["T2"])
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t2 = Ticket(id="T2", description="desc", status="todo", depends_on=["T1"])
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dag = TrackDAG([t1, t2])
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with pytest.raises(ValueError, match="DAG Validation Error: Cycle detected"):
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dag.topological_sort()
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