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fc93158 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | import { describe, expect, it } from "vitest";
import {
resolveActiveFallbackState,
resolveFallbackTransition,
type FallbackNoticeState,
} from "./fallback-state.js";
const baseAttempt = {
provider: "fireworks",
model: "fireworks/minimax-m2p5",
error: "Provider fireworks is in cooldown (all profiles unavailable)",
reason: "rate_limit" as const,
};
describe("fallback-state", () => {
it("treats fallback as active only when state matches selected and active refs", () => {
const state: FallbackNoticeState = {
fallbackNoticeSelectedModel: "fireworks/minimax-m2p5",
fallbackNoticeActiveModel: "deepinfra/moonshotai/Kimi-K2.5",
fallbackNoticeReason: "rate limit",
};
const resolved = resolveActiveFallbackState({
selectedModelRef: "fireworks/minimax-m2p5",
activeModelRef: "deepinfra/moonshotai/Kimi-K2.5",
state,
});
expect(resolved.active).toBe(true);
expect(resolved.reason).toBe("rate limit");
});
it("does not treat runtime drift as fallback when persisted state does not match", () => {
const state: FallbackNoticeState = {
fallbackNoticeSelectedModel: "anthropic/claude",
fallbackNoticeActiveModel: "deepinfra/moonshotai/Kimi-K2.5",
fallbackNoticeReason: "rate limit",
};
const resolved = resolveActiveFallbackState({
selectedModelRef: "fireworks/minimax-m2p5",
activeModelRef: "deepinfra/moonshotai/Kimi-K2.5",
state,
});
expect(resolved.active).toBe(false);
expect(resolved.reason).toBeUndefined();
});
it("marks fallback transition when selected->active pair changes", () => {
const resolved = resolveFallbackTransition({
selectedProvider: "fireworks",
selectedModel: "fireworks/minimax-m2p5",
activeProvider: "deepinfra",
activeModel: "moonshotai/Kimi-K2.5",
attempts: [baseAttempt],
state: {},
});
expect(resolved.fallbackActive).toBe(true);
expect(resolved.fallbackTransitioned).toBe(true);
expect(resolved.fallbackCleared).toBe(false);
expect(resolved.stateChanged).toBe(true);
expect(resolved.reasonSummary).toBe("rate limit");
expect(resolved.nextState.selectedModel).toBe("fireworks/minimax-m2p5");
expect(resolved.nextState.activeModel).toBe("deepinfra/moonshotai/Kimi-K2.5");
});
it("normalizes fallback reason whitespace for summaries", () => {
const resolved = resolveFallbackTransition({
selectedProvider: "fireworks",
selectedModel: "fireworks/minimax-m2p5",
activeProvider: "deepinfra",
activeModel: "moonshotai/Kimi-K2.5",
attempts: [{ ...baseAttempt, reason: "rate_limit\n\tburst" }],
state: {},
});
expect(resolved.reasonSummary).toBe("rate limit burst");
});
it("refreshes reason when fallback remains active with same model pair", () => {
const resolved = resolveFallbackTransition({
selectedProvider: "fireworks",
selectedModel: "fireworks/minimax-m2p5",
activeProvider: "deepinfra",
activeModel: "moonshotai/Kimi-K2.5",
attempts: [{ ...baseAttempt, reason: "timeout" }],
state: {
fallbackNoticeSelectedModel: "fireworks/minimax-m2p5",
fallbackNoticeActiveModel: "deepinfra/moonshotai/Kimi-K2.5",
fallbackNoticeReason: "rate limit",
},
});
expect(resolved.fallbackTransitioned).toBe(false);
expect(resolved.stateChanged).toBe(true);
expect(resolved.nextState.reason).toBe("timeout");
});
it("marks fallback as cleared when runtime returns to selected model", () => {
const resolved = resolveFallbackTransition({
selectedProvider: "fireworks",
selectedModel: "fireworks/minimax-m2p5",
activeProvider: "fireworks",
activeModel: "fireworks/minimax-m2p5",
attempts: [],
state: {
fallbackNoticeSelectedModel: "fireworks/minimax-m2p5",
fallbackNoticeActiveModel: "deepinfra/moonshotai/Kimi-K2.5",
fallbackNoticeReason: "rate limit",
},
});
expect(resolved.fallbackActive).toBe(false);
expect(resolved.fallbackCleared).toBe(true);
expect(resolved.fallbackTransitioned).toBe(false);
expect(resolved.stateChanged).toBe(true);
expect(resolved.nextState.selectedModel).toBeUndefined();
expect(resolved.nextState.activeModel).toBeUndefined();
expect(resolved.nextState.reason).toBeUndefined();
});
});
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