Agent skill
chain-tester
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/other/chain-tester
SKILL.md
Chain Tester
Templates for testing node chains with real nodes.
Testing Tiers
| Tier | Nodes | Complexity | Marker |
|---|---|---|---|
| Simple | 2-3 | Linear | (none) |
| Complex | 5-10 | Branching | (none) |
| Full | 10+ | Multi-branch | @pytest.mark.slow |
WorkflowBuilder API
from tests.nodes.chain.conftest import WorkflowBuilder
chain = WorkflowBuilder() \
.add(StartNode(), id="start") \
.add(SomeNode(param="value"), id="action") \
.add(EndNode(), id="end") \
.connect_sequential() \
.build()
Simple Chain Template
@pytest.mark.asyncio
async def test_basic_linear_chain(chain_executor):
chain = WorkflowBuilder() \
.add(StartNode(), id="start") \
.add(SetVariableNode(name="x", value=42), id="set") \
.add(EndNode(), id="end") \
.connect_sequential() \
.build()
result = await chain_executor.execute(chain)
assert result.status == ExecutionStatus.COMPLETED
assert result.context.variables["x"] == 42
Assertion Patterns
# Status assertions
assert result.success is True
# Variable assertions
assert result.final_variables["output"] == expected_value
# Execution assertions
assert "node_id" in result.nodes_executed
# Error assertions
assert len(result.errors) > 0
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