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| 1 | +import { cleanup, fireEvent, render, screen } from "@testing-library/react"; |
| 2 | +import { afterEach, beforeAll, beforeEach, describe, expect, test, vi } from "vitest"; |
| 3 | +import { LanguageModelSelector } from "./components/chatBox/languageModelSelector"; |
| 4 | +import { LanguageModelProvider } from "./languageModelContext"; |
| 5 | +import { LanguageModelInfo } from "./types"; |
| 6 | +import { useSelectedLanguageModel } from "./useSelectedLanguageModel"; |
| 7 | + |
| 8 | +vi.mock("./components/chatBox/modelProviderLogo", () => ({ |
| 9 | + ModelProviderLogo: () => null, |
| 10 | +})); |
| 11 | + |
| 12 | +const STORAGE_KEY = "selectedLanguageModel"; |
| 13 | + |
| 14 | +const makeModel = (model: string, overrides: Partial<LanguageModelInfo> = {}): LanguageModelInfo => ({ |
| 15 | + provider: "anthropic", |
| 16 | + model, |
| 17 | + inputModalities: ["text"], |
| 18 | + supportedDocumentTypes: [], |
| 19 | + ...overrides, |
| 20 | +}); |
| 21 | + |
| 22 | +const oldModels = [makeModel("old-default"), makeModel("old-other")]; |
| 23 | +const newModels = [makeModel("new-default"), makeModel("new-other")]; |
| 24 | + |
| 25 | +// Mirrors a chat page: the toolbar selector and the chat thread each resolve |
| 26 | +// the selection against the page's model list. |
| 27 | +const Toolbar = ({ languageModels }: { languageModels: LanguageModelInfo[] }) => { |
| 28 | + const { selectedLanguageModel, setSelectedLanguageModel } = useSelectedLanguageModel(languageModels); |
| 29 | + return ( |
| 30 | + <LanguageModelSelector |
| 31 | + languageModels={languageModels} |
| 32 | + selectedModel={selectedLanguageModel} |
| 33 | + onSelectedModelChange={setSelectedLanguageModel} |
| 34 | + /> |
| 35 | + ); |
| 36 | +}; |
| 37 | + |
| 38 | +const Thread = ({ languageModels }: { languageModels: LanguageModelInfo[] }) => { |
| 39 | + const { selectedLanguageModel } = useSelectedLanguageModel(languageModels); |
| 40 | + return ( |
| 41 | + <output data-testid="submitted-model" data-modalities={selectedLanguageModel?.inputModalities.join(",")}> |
| 42 | + {selectedLanguageModel?.model ?? "none"} |
| 43 | + </output> |
| 44 | + ); |
| 45 | +}; |
| 46 | + |
| 47 | +const ChatPage = ({ languageModels }: { languageModels: LanguageModelInfo[] }) => ( |
| 48 | + <> |
| 49 | + <Toolbar languageModels={languageModels} /> |
| 50 | + <Thread languageModels={languageModels} /> |
| 51 | + </> |
| 52 | +); |
| 53 | + |
| 54 | +// The provider is mounted once by the (app) layout and survives client-side |
| 55 | +// navigation, while each page renders with a freshly loaded model list. |
| 56 | +const renderSession = (languageModels: LanguageModelInfo[]) => { |
| 57 | + const result = render( |
| 58 | + <LanguageModelProvider> |
| 59 | + <ChatPage languageModels={languageModels} /> |
| 60 | + </LanguageModelProvider> |
| 61 | + ); |
| 62 | + |
| 63 | + return { |
| 64 | + navigateWithModels: (nextModels: LanguageModelInfo[]) => result.rerender( |
| 65 | + <LanguageModelProvider> |
| 66 | + <ChatPage languageModels={nextModels} /> |
| 67 | + </LanguageModelProvider> |
| 68 | + ), |
| 69 | + }; |
| 70 | +}; |
| 71 | + |
| 72 | +const selectModel = (currentModel: string, nextModel: string) => { |
| 73 | + fireEvent.click(screen.getByRole("button", { name: currentModel })); |
| 74 | + fireEvent.click(screen.getByRole("option", { name: nextModel })); |
| 75 | +}; |
| 76 | + |
| 77 | +const getStoredModel = () => { |
| 78 | + const stored = window.localStorage.getItem(STORAGE_KEY); |
| 79 | + return stored ? (JSON.parse(stored) as LanguageModelInfo).model : undefined; |
| 80 | +}; |
| 81 | + |
| 82 | +beforeAll(() => { |
| 83 | + // cmdk relies on these browser APIs, which jsdom does not implement. |
| 84 | + globalThis.ResizeObserver ??= class { |
| 85 | + observe() {} |
| 86 | + unobserve() {} |
| 87 | + disconnect() {} |
| 88 | + }; |
| 89 | + Element.prototype.scrollIntoView ??= () => {}; |
| 90 | +}); |
| 91 | + |
| 92 | +// Node 25 ships a global localStorage that shadows jsdom's, so install a fresh |
| 93 | +// in-memory store for each test. |
| 94 | +const installMockLocalStorage = () => { |
| 95 | + const store = new Map<string, string>(); |
| 96 | + const storage: Storage = { |
| 97 | + get length() { |
| 98 | + return store.size; |
| 99 | + }, |
| 100 | + clear: () => store.clear(), |
| 101 | + getItem: (key: string) => store.get(key) ?? null, |
| 102 | + key: (index: number) => Array.from(store.keys())[index] ?? null, |
| 103 | + removeItem: (key: string) => { |
| 104 | + store.delete(key); |
| 105 | + }, |
| 106 | + setItem: (key: string, value: string) => { |
| 107 | + store.set(key, value); |
| 108 | + }, |
| 109 | + }; |
| 110 | + Object.defineProperty(window, "localStorage", { configurable: true, value: storage }); |
| 111 | + Object.defineProperty(globalThis, "localStorage", { configurable: true, value: storage }); |
| 112 | +}; |
| 113 | + |
| 114 | +beforeEach(() => { |
| 115 | + installMockLocalStorage(); |
| 116 | +}); |
| 117 | + |
| 118 | +afterEach(() => { |
| 119 | + cleanup(); |
| 120 | +}); |
| 121 | + |
| 122 | +describe("useSelectedLanguageModel", () => { |
| 123 | + test("restores the stored model on mount", () => { |
| 124 | + window.localStorage.setItem(STORAGE_KEY, JSON.stringify(oldModels[1])); |
| 125 | + |
| 126 | + renderSession(oldModels); |
| 127 | + |
| 128 | + expect(screen.getByRole("button", { name: "old-other" })).toBeTruthy(); |
| 129 | + expect(screen.getByTestId("submitted-model").textContent).toBe("old-other"); |
| 130 | + }); |
| 131 | + |
| 132 | + test("keeps a newly configured model selected after the config changes mid-session", () => { |
| 133 | + const session = renderSession(oldModels); |
| 134 | + session.navigateWithModels(newModels); |
| 135 | + |
| 136 | + selectModel("new-default", "new-other"); |
| 137 | + |
| 138 | + expect(screen.getByRole("button", { name: "new-other" })).toBeTruthy(); |
| 139 | + expect(screen.getByTestId("submitted-model").textContent).toBe("new-other"); |
| 140 | + expect(getStoredModel()).toBe("new-other"); |
| 141 | + }); |
| 142 | + |
| 143 | + test("converges on the first configured model when the selected model is removed", () => { |
| 144 | + const session = renderSession(oldModels); |
| 145 | + selectModel("old-default", "old-other"); |
| 146 | + expect(getStoredModel()).toBe("old-other"); |
| 147 | + |
| 148 | + session.navigateWithModels(newModels); |
| 149 | + |
| 150 | + expect(screen.getByRole("button", { name: "new-default" })).toBeTruthy(); |
| 151 | + expect(screen.getByTestId("submitted-model").textContent).toBe("new-default"); |
| 152 | + // Reconciliation is derived, not written back, so consumers cannot |
| 153 | + // trigger each other into a storage write loop. |
| 154 | + expect(getStoredModel()).toBe("old-other"); |
| 155 | + }); |
| 156 | + |
| 157 | + test("uses the current config's capabilities for a stored model", () => { |
| 158 | + window.localStorage.setItem(STORAGE_KEY, JSON.stringify(oldModels[1])); |
| 159 | + const session = renderSession(oldModels); |
| 160 | + |
| 161 | + session.navigateWithModels([oldModels[0], makeModel("old-other", { inputModalities: ["text", "image"] })]); |
| 162 | + |
| 163 | + expect(screen.getByTestId("submitted-model").dataset.modalities).toBe("text,image"); |
| 164 | + }); |
| 165 | + |
| 166 | + test("selects nothing when no models are configured", () => { |
| 167 | + window.localStorage.setItem(STORAGE_KEY, JSON.stringify(oldModels[0])); |
| 168 | + |
| 169 | + renderSession([]); |
| 170 | + |
| 171 | + expect(screen.getByTestId("submitted-model").textContent).toBe("none"); |
| 172 | + }); |
| 173 | +}); |
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