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import { describe, expect, test } from "bun:test"
import { cycleModelVariant, getConfiguredAgentVariant, resolveModelVariant } from "./model-variant"
describe("model variant", () => {
test("resolves configured agent variant when model matches", () => {
const value = getConfiguredAgentVariant({
agent: {
model: { providerID: "openai", modelID: "gpt-5.2" },
variant: "xhigh",
},
model: {
providerID: "openai",
modelID: "gpt-5.2",
variants: { low: {}, high: {}, xhigh: {} },
},
})
expect(value).toBe("xhigh")
})
test("ignores configured variant when model does not match", () => {
const value = getConfiguredAgentVariant({
agent: {
model: { providerID: "openai", modelID: "gpt-5.2" },
variant: "xhigh",
},
model: {
providerID: "anthropic",
modelID: "claude-sonnet-4",
variants: { low: {}, high: {}, xhigh: {} },
},
})
expect(value).toBeUndefined()
})
test("prefers selected variant over configured variant", () => {
const value = resolveModelVariant({
variants: ["low", "high", "xhigh"],
selected: "high",
configured: "xhigh",
})
expect(value).toBe("high")
})
test("lets an explicit default override the configured variant", () => {
const value = resolveModelVariant({
variants: ["low", "high", "xhigh"],
selected: null,
configured: "xhigh",
})
expect(value).toBeUndefined()
})
test("cycles from configured variant to next", () => {
const value = cycleModelVariant({
variants: ["low", "high", "xhigh"],
selected: undefined,
configured: "high",
})
expect(value).toBe("xhigh")
})
test("wraps from configured last variant to first", () => {
const value = cycleModelVariant({
variants: ["low", "high", "xhigh"],
selected: undefined,
configured: "xhigh",
})
expect(value).toBe("low")
})
test("cycles from an explicit default to the first variant", () => {
const value = cycleModelVariant({
variants: ["low", "high", "xhigh"],
selected: null,
configured: "xhigh",
})
expect(value).toBe("low")
})
})
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