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| 1 | +import { Message } from "@/app/app/interfaces"; |
| 2 | +import { |
| 3 | + chooseImplicitPreferred, |
| 4 | + getMultiModelChildren, |
| 5 | + getUnresolvedMultiModelTurn, |
| 6 | +} from "@/app/app/message/multiModel"; |
| 7 | +import { getLatestMessageChain } from "@/app/app/services/messageTree"; |
| 8 | + |
| 9 | +let nextNodeId = 1; |
| 10 | + |
| 11 | +function buildMessage(overrides: Partial<Message>): Message { |
| 12 | + return { |
| 13 | + nodeId: nextNodeId++, |
| 14 | + message: "", |
| 15 | + type: "assistant", |
| 16 | + files: [], |
| 17 | + toolCall: null, |
| 18 | + parentNodeId: null, |
| 19 | + packets: [], |
| 20 | + ...overrides, |
| 21 | + }; |
| 22 | +} |
| 23 | + |
| 24 | +// Builds a multi-model turn: one response per entry of `models`, in panel |
| 25 | +// layout order (first model last). |
| 26 | +function buildTurn( |
| 27 | + tree: Map<number, Message>, |
| 28 | + models: (string | { model: string; type: "error" })[], |
| 29 | + options: { parent?: Message; preferredModel?: string } = {} |
| 30 | +): { userMessage: Message; responses: Message[] } { |
| 31 | + const userMessage = buildMessage({ |
| 32 | + type: "user", |
| 33 | + parentNodeId: options.parent?.nodeId ?? null, |
| 34 | + messageId: nextNodeId * 100, |
| 35 | + }); |
| 36 | + const responses = models.map((entry) => { |
| 37 | + const model = typeof entry === "string" ? entry : entry.model; |
| 38 | + return buildMessage({ |
| 39 | + type: typeof entry === "string" ? "assistant" : "error", |
| 40 | + parentNodeId: userMessage.nodeId, |
| 41 | + messageId: nextNodeId * 100, |
| 42 | + overridden_model: model, |
| 43 | + modelDisplayName: model, |
| 44 | + }); |
| 45 | + }); |
| 46 | + userMessage.childrenNodeIds = responses.map((r) => r.nodeId); |
| 47 | + const preferred = responses.find( |
| 48 | + (r) => r.overridden_model === options.preferredModel |
| 49 | + ); |
| 50 | + userMessage.preferredResponseId = preferred?.messageId ?? null; |
| 51 | + userMessage.latestChildNodeId = |
| 52 | + preferred?.nodeId ?? responses.at(-1)?.nodeId ?? null; |
| 53 | + if (options.parent) { |
| 54 | + options.parent.childrenNodeIds = [ |
| 55 | + ...(options.parent.childrenNodeIds ?? []), |
| 56 | + userMessage.nodeId, |
| 57 | + ]; |
| 58 | + options.parent.latestChildNodeId = userMessage.nodeId; |
| 59 | + } |
| 60 | + tree.set(userMessage.nodeId, userMessage); |
| 61 | + responses.forEach((r) => tree.set(r.nodeId, r)); |
| 62 | + return { userMessage, responses }; |
| 63 | +} |
| 64 | + |
| 65 | +// The production chain walk, so tests exercise the same traversal onSubmit |
| 66 | +// feeds the helpers. |
| 67 | +const chainOf = getLatestMessageChain; |
| 68 | + |
| 69 | +beforeEach(() => { |
| 70 | + nextNodeId = 1; |
| 71 | +}); |
| 72 | + |
| 73 | +describe("getMultiModelChildren", () => { |
| 74 | + it("returns model-tagged assistant and error children in order", () => { |
| 75 | + const tree = new Map<number, Message>(); |
| 76 | + const { userMessage, responses } = buildTurn(tree, [ |
| 77 | + "gpt-5", |
| 78 | + { model: "claude-opus-5", type: "error" }, |
| 79 | + ]); |
| 80 | + expect(getMultiModelChildren(userMessage, tree)).toEqual(responses); |
| 81 | + }); |
| 82 | + |
| 83 | + it("ignores turns without two model-tagged children", () => { |
| 84 | + const tree = new Map<number, Message>(); |
| 85 | + const userMessage = buildMessage({ type: "user" }); |
| 86 | + const regenerated = [ |
| 87 | + buildMessage({ type: "assistant", parentNodeId: userMessage.nodeId }), |
| 88 | + buildMessage({ type: "assistant", parentNodeId: userMessage.nodeId }), |
| 89 | + ]; |
| 90 | + userMessage.childrenNodeIds = regenerated.map((r) => r.nodeId); |
| 91 | + tree.set(userMessage.nodeId, userMessage); |
| 92 | + regenerated.forEach((r) => tree.set(r.nodeId, r)); |
| 93 | + expect(getMultiModelChildren(userMessage, tree)).toBeNull(); |
| 94 | + }); |
| 95 | +}); |
| 96 | + |
| 97 | +describe("getUnresolvedMultiModelTurn", () => { |
| 98 | + it("finds the last turn when no preferred response is set", () => { |
| 99 | + const tree = new Map<number, Message>(); |
| 100 | + const { userMessage, responses } = buildTurn(tree, [ |
| 101 | + "gpt-5", |
| 102 | + "claude-opus-5", |
| 103 | + ]); |
| 104 | + const turn = getUnresolvedMultiModelTurn(chainOf(tree), tree); |
| 105 | + expect(turn?.userMessage).toBe(userMessage); |
| 106 | + expect(turn?.responses).toEqual(responses); |
| 107 | + }); |
| 108 | + |
| 109 | + it("returns null once a preferred response exists", () => { |
| 110 | + const tree = new Map<number, Message>(); |
| 111 | + buildTurn(tree, ["gpt-5", "claude-opus-5"], { |
| 112 | + preferredModel: "gpt-5", |
| 113 | + }); |
| 114 | + expect(getUnresolvedMultiModelTurn(chainOf(tree), tree)).toBeNull(); |
| 115 | + }); |
| 116 | + |
| 117 | + it("returns null for single-model turns", () => { |
| 118 | + const tree = new Map<number, Message>(); |
| 119 | + buildTurn(tree, ["gpt-5"]); |
| 120 | + expect(getUnresolvedMultiModelTurn(chainOf(tree), tree)).toBeNull(); |
| 121 | + }); |
| 122 | +}); |
| 123 | + |
| 124 | +describe("chooseImplicitPreferred", () => { |
| 125 | + it("keeps the model preferred in the previous turn", () => { |
| 126 | + const tree = new Map<number, Message>(); |
| 127 | + const first = buildTurn(tree, ["gemini-3", "gpt-5"], { |
| 128 | + preferredModel: "gemini-3", |
| 129 | + }); |
| 130 | + const second = buildTurn(tree, ["gemini-3", "gpt-5"], { |
| 131 | + parent: first.responses[0], |
| 132 | + }); |
| 133 | + const turn = getUnresolvedMultiModelTurn(chainOf(tree), tree)!; |
| 134 | + expect(chooseImplicitPreferred(chainOf(tree), tree, turn)).toBe( |
| 135 | + second.responses[0] |
| 136 | + ); |
| 137 | + }); |
| 138 | + |
| 139 | + it("falls back to the first model (last child) without a prior preference", () => { |
| 140 | + const tree = new Map<number, Message>(); |
| 141 | + const { responses } = buildTurn(tree, ["gemini-3", "gpt-5"]); |
| 142 | + const turn = getUnresolvedMultiModelTurn(chainOf(tree), tree)!; |
| 143 | + expect(chooseImplicitPreferred(chainOf(tree), tree, turn)).toBe( |
| 144 | + responses[1] |
| 145 | + ); |
| 146 | + }); |
| 147 | + |
| 148 | + it("falls back to the first model when the prior model did not answer this turn", () => { |
| 149 | + const tree = new Map<number, Message>(); |
| 150 | + const first = buildTurn(tree, ["gemini-3", "gpt-5"], { |
| 151 | + preferredModel: "gemini-3", |
| 152 | + }); |
| 153 | + const second = buildTurn(tree, ["claude-opus-5", "gpt-5"], { |
| 154 | + parent: first.responses[0], |
| 155 | + }); |
| 156 | + const turn = getUnresolvedMultiModelTurn(chainOf(tree), tree)!; |
| 157 | + expect(chooseImplicitPreferred(chainOf(tree), tree, turn)).toBe( |
| 158 | + second.responses[1] |
| 159 | + ); |
| 160 | + }); |
| 161 | + |
| 162 | + it("never assumes an errored response", () => { |
| 163 | + const tree = new Map<number, Message>(); |
| 164 | + const { responses } = buildTurn(tree, [ |
| 165 | + "gemini-3", |
| 166 | + { model: "gpt-5", type: "error" }, |
| 167 | + ]); |
| 168 | + const turn = getUnresolvedMultiModelTurn(chainOf(tree), tree)!; |
| 169 | + expect(chooseImplicitPreferred(chainOf(tree), tree, turn)).toBe( |
| 170 | + responses[0] |
| 171 | + ); |
| 172 | + }); |
| 173 | + |
| 174 | + it("returns null when every response errored", () => { |
| 175 | + const tree = new Map<number, Message>(); |
| 176 | + buildTurn(tree, [ |
| 177 | + { model: "gemini-3", type: "error" }, |
| 178 | + { model: "gpt-5", type: "error" }, |
| 179 | + ]); |
| 180 | + const turn = getUnresolvedMultiModelTurn(chainOf(tree), tree)!; |
| 181 | + expect(chooseImplicitPreferred(chainOf(tree), tree, turn)).toBeNull(); |
| 182 | + }); |
| 183 | +}); |
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