mirror of https://github.com/webpack/webpack.git
88 lines
2.9 KiB
JavaScript
88 lines
2.9 KiB
JavaScript
// This config need to be set on initial evaluation to be effective
|
|
__webpack_nonce__ = "nonce";
|
|
__webpack_public_path__ = "https://example.com/public/path/";
|
|
|
|
it("should prefetch and preload child chunks on chunk load", () => {
|
|
|
|
let link, script;
|
|
|
|
expect(document.head._children).toHaveLength(1);
|
|
|
|
// Test prefetch from entry chunk
|
|
link = document.head._children[0];
|
|
expect(link._type).toBe("link");
|
|
expect(link.rel).toBe("prefetch");
|
|
expect(link.href).toBe("https://example.com/public/path/chunk1.js");
|
|
|
|
const promise = import(/* webpackChunkName: "chunk1", webpackPrefetch: true */ "./chunk1");
|
|
|
|
expect(document.head._children).toHaveLength(3);
|
|
|
|
// Test normal script loading
|
|
script = document.head._children[1];
|
|
expect(script._type).toBe("script");
|
|
expect(script.src).toBe("https://example.com/public/path/chunk1.js");
|
|
expect(script.getAttribute("nonce")).toBe("nonce")
|
|
expect(script.crossOrigin).toBe("anonymous");
|
|
expect(script.onload).toBeTypeOf("function");
|
|
|
|
// Test preload of chunk1-b
|
|
link = document.head._children[2];
|
|
expect(link._type).toBe("link");
|
|
expect(link.rel).toBe("preload");
|
|
expect(link.as).toBe("script");
|
|
expect(link.href).toBe("https://example.com/public/path/chunk1-b.js");
|
|
expect(link.charset).toBe("utf-8");
|
|
expect(link.getAttribute("nonce")).toBe("nonce");
|
|
expect(link.crossOrigin).toBe("anonymous");
|
|
|
|
// Run the script
|
|
__non_webpack_require__("./chunk1.js");
|
|
|
|
script.onload();
|
|
|
|
return promise.then(() => {
|
|
expect(document.head._children).toHaveLength(5);
|
|
|
|
// Test prefetching for chunk1-c and chunk1-a in this order
|
|
link = document.head._children[3];
|
|
expect(link._type).toBe("link");
|
|
expect(link.rel).toBe("prefetch");
|
|
expect(link.href).toBe("https://example.com/public/path/chunk1-c.js");
|
|
expect(link.crossOrigin).toBe("anonymous");
|
|
|
|
link = document.head._children[4];
|
|
expect(link._type).toBe("link");
|
|
expect(link.rel).toBe("prefetch");
|
|
expect(link.href).toBe("https://example.com/public/path/chunk1-a.js");
|
|
expect(link.crossOrigin).toBe("anonymous");
|
|
|
|
const promise2 = import(/* webpackChunkName: "chunk1", webpackPrefetch: true */ "./chunk1");
|
|
|
|
// Loading chunk1 again should not trigger prefetch/preload
|
|
expect(document.head._children).toHaveLength(5);
|
|
|
|
const promise3 = import(/* webpackChunkName: "chunk2" */ "./chunk2");
|
|
|
|
expect(document.head._children).toHaveLength(6);
|
|
|
|
// Test normal script loading
|
|
script = document.head._children[5];
|
|
expect(script._type).toBe("script");
|
|
expect(script.src).toBe("https://example.com/public/path/chunk2.js");
|
|
expect(script.getAttribute("nonce")).toBe("nonce")
|
|
expect(script.crossOrigin).toBe("anonymous");
|
|
expect(script.onload).toBeTypeOf("function");
|
|
|
|
// Run the script
|
|
__non_webpack_require__("./chunk2.js");
|
|
|
|
script.onload();
|
|
|
|
return promise3.then(() => {
|
|
// Loading chunk2 again should not trigger prefetch/preload as it's already prefetch/preloaded
|
|
expect(document.head._children).toHaveLength(6);
|
|
});
|
|
});
|
|
})
|