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JavaScript@langchain/coretestingStreamMatcherstoHaveStreamReasoning

Method●Since v1.2

toHaveStreamReasoning

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toHaveStreamReasoning(expected: string): R

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Parameters

Name	Type	Description
`expected`*	`string`

Asserts that the stream resolves to the expected concatenated reasoning text.

The exact reasoning text expected from ChatModelStream.reasoning.