44 lines
796 B
Python
44 lines
796 B
Python
import pytest
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from bonobo.constants import BEGIN
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from bonobo.structs import Graph
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identity = lambda x: x
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def test_graph_outputs_of():
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g = Graph()
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# default graph only node
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assert len(g.outputs_of(BEGIN)) == 0
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# unexisting node
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with pytest.raises(KeyError):
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g.outputs_of(0)
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# create node
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assert len(g.outputs_of(0, create=True)) == 0
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assert len(g.outputs_of(0)) == 0
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def test_graph_add_component():
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g = Graph()
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assert len(g.nodes) == 0
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g.add_node(identity)
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assert len(g.nodes) == 1
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g.add_node(identity)
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assert len(g.nodes) == 2
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def test_graph_add_chain():
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g = Graph()
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assert len(g.nodes) == 0
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g.add_chain(identity, identity, identity)
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assert len(g.nodes) == 3
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assert len(g.outputs_of(BEGIN)) == 1
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