one
Version:
One is a new React Framework that makes Vite serve both native and web.
153 lines (152 loc) • 5.07 kB
JavaScript
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
describe("criticalCSSPlugin", () => {
beforeEach(() => {
vi.resetModules();
});
afterEach(() => {
vi.clearAllMocks();
});
describe("resolveId", () => {
it("should return null for non-inline CSS imports", async () => {
const {
criticalCSSPlugin
} = await import("./criticalCSSPlugin.mjs");
const plugin = criticalCSSPlugin();
plugin.configResolved({
root: "/project"
});
const result = await plugin.resolveId.call({
resolve: vi.fn()
}, "./styles.css", "/project/src/App.tsx");
expect(result).toBeNull();
});
it("should return null for non-css imports", async () => {
const {
criticalCSSPlugin
} = await import("./criticalCSSPlugin.mjs");
const plugin = criticalCSSPlugin();
plugin.configResolved({
root: "/project"
});
const result = await plugin.resolveId.call({
resolve: vi.fn()
}, "./data.json", "/project/src/App.tsx");
expect(result).toBeNull();
});
it("should resolve .inline.css and track it", async () => {
const {
criticalCSSPlugin
} = await import("./criticalCSSPlugin.mjs");
const plugin = criticalCSSPlugin();
plugin.configResolved({
root: "/project"
});
const mockResolve = vi.fn().mockResolvedValue({
id: "/project/src/styles.inline.css"
});
const result = await plugin.resolveId.call({
resolve: mockResolve
}, "./styles.inline.css", "/project/src/App.tsx");
expect(mockResolve).toHaveBeenCalledWith("./styles.inline.css", "/project/src/App.tsx", {
skipSelf: true
});
expect(result).toEqual({
id: "/project/src/styles.inline.css"
});
});
it("should track inline CSS source paths", async () => {
const {
criticalCSSPlugin,
getCriticalCSSSources
} = await import("./criticalCSSPlugin.mjs");
const plugin = criticalCSSPlugin();
plugin.configResolved({
root: "/project"
});
const mockResolve = vi.fn().mockResolvedValue({
id: "/project/src/layout.inline.css"
});
await plugin.resolveId.call({
resolve: mockResolve
}, "./layout.inline.css", "/project/src/App.tsx");
const sources = getCriticalCSSSources();
expect(sources.has("src/layout.inline.css")).toBe(true);
});
it("should return null when resolve fails", async () => {
const {
criticalCSSPlugin
} = await import("./criticalCSSPlugin.mjs");
const plugin = criticalCSSPlugin();
plugin.configResolved({
root: "/project"
});
const mockResolve = vi.fn().mockResolvedValue(null);
const result = await plugin.resolveId.call({
resolve: mockResolve
}, "./nonexistent.inline.css", "/project/src/App.tsx");
expect(result).toBeNull();
});
});
describe("getCriticalCSSOutputPaths", () => {
it("should map inline CSS source to output paths via manifest", async () => {
const {
criticalCSSPlugin,
getCriticalCSSSources,
getCriticalCSSOutputPaths
} = await import("./criticalCSSPlugin.mjs");
const plugin = criticalCSSPlugin();
plugin.configResolved({
root: "/project"
});
const mockResolve = vi.fn().mockResolvedValue({
id: "/project/app/layout.inline.css"
});
await plugin.resolveId.call({
resolve: mockResolve
}, "./layout.inline.css", "/project/app/_layout.tsx");
const manifest = {
"app/layout.inline.css": {
file: "assets/layout-abc123.css",
src: "app/layout.inline.css"
},
"app/_layout.tsx": {
file: "assets/layout-def456.js",
css: ["assets/layout-abc123.css"],
imports: [],
name: "_layout"
}
};
const outputPaths = getCriticalCSSOutputPaths(manifest);
expect(outputPaths.has("/assets/layout-abc123.css")).toBe(true);
});
it("should return empty set when no inline CSS exists", async () => {
const {
getCriticalCSSOutputPaths
} = await import("./criticalCSSPlugin.mjs");
const manifest = {
"app/styles.css": {
file: "assets/styles-abc.css"
}
};
const outputPaths = getCriticalCSSOutputPaths(manifest);
expect(outputPaths).toBeDefined();
});
});
describe("plugin metadata", () => {
it("should have correct name", async () => {
const {
criticalCSSPlugin
} = await import("./criticalCSSPlugin.mjs");
const plugin = criticalCSSPlugin();
expect(plugin.name).toBe("one:critical-css");
});
it("should enforce pre", async () => {
const {
criticalCSSPlugin
} = await import("./criticalCSSPlugin.mjs");
const plugin = criticalCSSPlugin();
expect(plugin.enforce).toBe("pre");
});
});
});
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