import { describe, expect, it } from "vite-plus/test"; import {  areFontAdvancesMonospace,  clampCodeFontSize,  clampInterfaceFontSize,  clampPromptFontSize,  cssFontFamilies,  resolveDefaultFamilyLabel,  resolveTerminalFontPreference,  resolveTerminalFontSizePreference,} from "./appearanceFonts"; describe("areFontAdvancesMonospace", () => {  it("accepts a fixed advance and rejects any proportional glyph", () => {    expect(areFontAdvancesMonospace([10, 10, 10, 10])).toBe(true);    expect(areFontAdvancesMonospace([10, 10, 7, 10])).toBe(false);    expect(areFontAdvancesMonospace([10, 10.02])).toBe(false);  });   it("fails open when canvas metrics are unavailable", () => {    expect(areFontAdvancesMonospace([])).toBe(true);    expect(areFontAdvancesMonospace([Number.NaN, Number.NaN])).toBe(true);  });}); describe("cssFontFamilies", () => {  it("returns null for effectively empty input", () => {    expect(cssFontFamilies("")).toBeNull();    expect(cssFontFamilies("   ")).toBeNull();    expect(cssFontFamilies(" , , ")).toBeNull();  });   it("quotes names with spaces and keeps single idents bare", () => {    expect(cssFontFamilies("Fira Code")).toBe('"Fira Code"');    expect(cssFontFamilies("monospace")).toBe("monospace");    expect(cssFontFamilies('"Comic Mono"')).toBe('"Comic Mono"');  });   it("normalizes comma-separated lists and strips embedded quotes", () => {    expect(cssFontFamilies(" Fira Code , Menlo ")).toBe('"Fira Code", Menlo');    expect(cssFontFamilies('Bad"Name')).toBe('"BadName"');  });   it("quotes names that are not single CSS idents", () => {    expect(cssFontFamilies("3270 Nerd Font")).toBe('"3270 Nerd Font"');    expect(cssFontFamilies("M+ 1m")).toBe('"M+ 1m"');  });}); describe("resolveDefaultFamilyLabel", () => {  it("skips generic keywords and returns null for a stack of only generics", () => {    expect(resolveDefaultFamilyLabel("system-ui, sans-serif")).toBeNull();    expect(resolveDefaultFamilyLabel("ui-monospace, monospace")).toBeNull();  });}); describe("resolveTerminalFontPreference", () => {  it("inherits the code font in simple mode", () => {    expect(      resolveTerminalFontPreference({ advanced: false, code: "Fira Code", terminal: "" }),    ).toBe("Fira Code");    expect(      resolveTerminalFontPreference({        advanced: false,        code: "Fira Code",        terminal: "Berkeley Mono",      }),    ).toBe("Fira Code");  });   it("keeps code and terminal fonts independent in advanced mode", () => {    expect(resolveTerminalFontPreference({ advanced: true, code: "Fira Code", terminal: "" })).toBe(      "",    );    expect(      resolveTerminalFontPreference({        advanced: true,        code: "Fira Code",        terminal: "Berkeley Mono",      }),    ).toBe("Berkeley Mono");  });}); describe("resolveTerminalFontSizePreference", () => {  it("inherits the code font size in simple mode", () => {    expect(resolveTerminalFontSizePreference({ advanced: false, code: 15, terminal: 12 })).toBe(15);  });   it("keeps code and terminal font sizes independent in advanced mode", () => {    expect(resolveTerminalFontSizePreference({ advanced: true, code: 15, terminal: 12 })).toBe(12);  });}); describe("font size clamping", () => {  it("keeps sizes inside the ranges the UI can absorb", () => {    expect(clampInterfaceFontSize(16)).toBe(16);    expect(clampInterfaceFontSize(2)).toBe(12);    expect(clampInterfaceFontSize(96)).toBe(20);    expect(clampPromptFontSize(40)).toBe(20);    expect(clampCodeFontSize(1)).toBe(10);  });   it("rounds fractional values and falls back for unusable input", () => {    expect(clampCodeFontSize(13.4)).toBe(13);    expect(clampInterfaceFontSize(Number.NaN)).toBe(16);    expect(clampPromptFontSize(Number.POSITIVE_INFINITY)).toBe(14);  });});