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22 lines
608 B
Python
22 lines
608 B
Python
import pytest
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from haystack import Pipeline
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from haystack.core.errors import PipelineConnectError
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from haystack.testing.sample_components import Double
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def test_connect_component_twice():
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pipe = Pipeline()
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c1 = Double()
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c2 = Double()
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c3 = Double()
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pipe.add_component("c1", c1)
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pipe.add_component("c2", c2)
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pipe.add_component("c3", c3)
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pipe.connect("c1.value", "c2.value")
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# the following should be a no-op
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pipe.connect("c1.value", "c2.value")
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# this should fail instead
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with pytest.raises(PipelineConnectError):
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pipe.connect("c3.value", "c2.value")
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