alexion
6081e3e325
Imported as a linear vendor commit so forge rebases do not replay the upstream root tree. git-subtree-dir: third_party/pi git-subtree-split: 71023aec1546d6d677a65669c5665c0927ce0dd0
71 lines
3.0 KiB
TypeScript
71 lines
3.0 KiB
TypeScript
import { resetCapabilitiesCache, setCapabilities } from "@earendil-works/pi-tui";
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import { afterEach, describe, expect, it } from "vitest";
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import {
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detectColorFgBgTheme,
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detectTerminalTheme,
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getThemeByName,
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parseAutoThemeSetting,
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resolveThemeSetting,
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} from "../src/modes/interactive/theme/theme.ts";
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afterEach(() => {
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resetCapabilitiesCache();
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});
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describe("detectColorFgBgTheme", () => {
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it("classifies the last field by palette index like Vim", () => {
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expect(detectColorFgBgTheme({ COLORFGBG: "15;0" })).toBe("dark");
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expect(detectColorFgBgTheme({ COLORFGBG: "0;7;15" })).toBe("light");
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// Solarized Dark's background is bright black.
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expect(detectColorFgBgTheme({ COLORFGBG: "12;8" })).toBe("dark");
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// rxvt writes "default" when the background is not a palette color.
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expect(detectColorFgBgTheme({ COLORFGBG: "15;default" })).toBeUndefined();
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expect(detectColorFgBgTheme({})).toBeUndefined();
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});
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});
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describe("detectTerminalTheme", () => {
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it("prefers the background, then the reported scheme, then COLORFGBG, then dark", () => {
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const env = { COLORFGBG: "0;15" };
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expect(detectTerminalTheme({ background: { r: 8, g: 8, b: 8 } }, "light", env)).toBe("dark");
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expect(detectTerminalTheme({}, "dark", env)).toBe("dark");
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expect(detectTerminalTheme({}, undefined, env)).toBe("light");
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expect(detectTerminalTheme({}, undefined, {})).toBe("dark");
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});
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it("follows the foreground when text is readable that way", () => {
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const background = { r: 118, g: 118, b: 118 };
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expect(detectTerminalTheme({ background })).toBe("light");
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expect(detectTerminalTheme({ background, foreground: { r: 255, g: 255, b: 255 } })).toBe("dark");
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// White text cannot reach 4.5:1 on mid-gray.
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const midGray = { r: 128, g: 128, b: 128 };
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expect(detectTerminalTheme({ background: midGray, foreground: { r: 255, g: 255, b: 255 } })).toBe("light");
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});
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});
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describe("theme color mode", () => {
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it("uses terminal capabilities", () => {
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setCapabilities({ images: null, trueColor: false, hyperlinks: false });
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const ansi256Theme = getThemeByName("dark");
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if (!ansi256Theme) throw new Error("dark theme not found");
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expect(ansi256Theme.getColorMode()).toBe("256color");
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expect(ansi256Theme.getFgAnsi("accent")).toMatch(/^\x1b\[38;5;\d+m$/);
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setCapabilities({ images: null, trueColor: true, hyperlinks: false });
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const truecolorTheme = getThemeByName("dark");
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if (!truecolorTheme) throw new Error("dark theme not found");
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expect(truecolorTheme.getColorMode()).toBe("truecolor");
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expect(truecolorTheme.getFgAnsi("accent")).toMatch(/^\x1b\[38;2;\d+;\d+;\d+m$/);
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});
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});
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describe("theme setting helpers", () => {
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it("parses and resolves automatic theme settings", () => {
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expect(parseAutoThemeSetting("light/dark")).toEqual({ lightTheme: "light", darkTheme: "dark" });
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expect(resolveThemeSetting("dark", "light")).toBe("dark");
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expect(resolveThemeSetting("light/dark", "light")).toBe("light");
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expect(resolveThemeSetting("light/dark", "dark")).toBe("dark");
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expect(resolveThemeSetting("light/dark/extra", "dark")).toBeUndefined();
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});
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});
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