Struct MockResponse 

pub struct MockResponse {
    pub text: String,
    pub tool_call: Option<MockToolCall>,
    pub stop_reason: String,
}

A single canned response produced by MockApiClient.

Each MockResponse describes exactly one assistant reply: the text the model “says”, an optional tool call, and a stop reason. The mock client translates these fields into the appropriate StreamEvent sequence when stream_messages is called.

Construction

Build directly or via MockApiClient::with_responses:

use loopctl::testing::MockResponse;

let response = MockResponse {
    text: "Done.".to_string(),
    tool_call: None,
    stop_reason: "end_turn".to_string(),
};

Fields

text: String

The text content the assistant should produce.

Emitted as a IndexedDelta event containing a DeltaPart::Text variant. Defaults to "Hello!" when constructed via MockApiClient::new.

The text is sent as a single delta — the mock does not break it into chunks. If your test needs to verify incremental streaming, construct the StreamEvent sequence manually.

tool_call: Option<MockToolCall>

An optional tool call the assistant should make.

When present, the mock emits a second content block of type MessagePart::ToolCall and sets the stop reason to "tool_use". See MockToolCall for the fields involved.

Set to None for a plain text response. Set to Some(...) when testing tool dispatch or multi-turn tool-call scenarios.

stop_reason: String

The stop reason for this response.

Common values are "end_turn" (normal completion) and "tool_use" (agent should execute a tool). Defaults to "end_turn".

The agent loop uses this to decide whether to continue processing or to finalize the session. Setting it to "max_tokens" is useful for testing truncation handling.

Trait Implementations

impl Clone for MockResponse

fn clone(&self) -> MockResponse

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for MockResponse

fn default() -> MockResponse

Returns the “default value” for a type.