import { describe, expect, it } from "vitest";import {  DEFAULT_MODEL,  DEFAULT_MODEL_BY_PROVIDER,  type ModelCapabilities,} from "@t3tools/contracts"; import {  applyClaudePromptEffortPrefix,  getDefaultEffort,  hasEffortLevel,  isClaudeUltrathinkPrompt,  normalizeModelSlug,  resolveModelSlug,  resolveModelSlugForProvider,  resolveSelectableModel,  trimOrNull,} from "./model"; const codexCaps: ModelCapabilities = {  reasoningEffortLevels: [    { value: "xhigh", label: "Extra High" },    { value: "high", label: "High", isDefault: true },  ],  supportsFastMode: true,  supportsThinkingToggle: false,  promptInjectedEffortLevels: [],}; const claudeCaps: ModelCapabilities = {  reasoningEffortLevels: [    { value: "medium", label: "Medium" },    { value: "high", label: "High", isDefault: true },    { value: "ultrathink", label: "Ultrathink" },  ],  supportsFastMode: false,  supportsThinkingToggle: false,  promptInjectedEffortLevels: ["ultrathink"],}; describe("normalizeModelSlug", () => {  it("maps known aliases to canonical slugs", () => {    expect(normalizeModelSlug("5.3")).toBe("gpt-5.3-codex");    expect(normalizeModelSlug("sonnet", "claudeAgent")).toBe("claude-sonnet-4-6");  });   it("returns null for empty or missing values", () => {    expect(normalizeModelSlug("")).toBeNull();    expect(normalizeModelSlug("   ")).toBeNull();    expect(normalizeModelSlug(null)).toBeNull();    expect(normalizeModelSlug(undefined)).toBeNull();  });}); describe("resolveModelSlug", () => {  it("returns defaults when the model is missing", () => {    expect(resolveModelSlug(undefined)).toBe(DEFAULT_MODEL);    expect(resolveModelSlugForProvider("claudeAgent", undefined)).toBe(      DEFAULT_MODEL_BY_PROVIDER.claudeAgent,    );  });   it("preserves normalized unknown models", () => {    expect(resolveModelSlug("custom/internal-model")).toBe("custom/internal-model");  });}); describe("resolveSelectableModel", () => {  it("resolves exact slugs, labels, and aliases", () => {    const options = [      { slug: "gpt-5.3-codex", name: "GPT-5.3 Codex" },      { slug: "claude-sonnet-4-6", name: "Claude Sonnet 4.6" },    ];    expect(resolveSelectableModel("codex", "gpt-5.3-codex", options)).toBe("gpt-5.3-codex");    expect(resolveSelectableModel("codex", "gpt-5.3 codex", options)).toBe("gpt-5.3-codex");    expect(resolveSelectableModel("claudeAgent", "sonnet", options)).toBe("claude-sonnet-4-6");  });}); describe("capability helpers", () => {  it("reads default efforts", () => {    expect(getDefaultEffort(codexCaps)).toBe("high");    expect(getDefaultEffort(claudeCaps)).toBe("high");  });   it("checks effort support", () => {    expect(hasEffortLevel(codexCaps, "xhigh")).toBe(true);    expect(hasEffortLevel(codexCaps, "max")).toBe(false);  });}); describe("misc helpers", () => {  it("detects ultrathink prompts", () => {    expect(isClaudeUltrathinkPrompt("Ultrathink:\nInvestigate")).toBe(true);    expect(isClaudeUltrathinkPrompt("Investigate")).toBe(false);  });   it("prefixes ultrathink prompts once", () => {    expect(applyClaudePromptEffortPrefix("Investigate", "ultrathink")).toBe(      "Ultrathink:\nInvestigate",    );    expect(applyClaudePromptEffortPrefix("Ultrathink:\nInvestigate", "ultrathink")).toBe(      "Ultrathink:\nInvestigate",    );  });   it("trims strings to null", () => {    expect(trimOrNull("  hi  ")).toBe("hi");    expect(trimOrNull("   ")).toBeNull();  });});