37 lines
1.6 KiB
TypeScript
37 lines
1.6 KiB
TypeScript
import { importModuleWithRetry } from "../src/platform/moduleLoading";
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function assert(condition: unknown, message: string): asserts condition {
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if (!condition) throw new Error(message);
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}
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async function verifyModuleImportRetry() {
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let attempts = 0;
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let pauses = 0;
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const module = { id: "files", uiCapabilities: { "files.fileExplorer": {} } };
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const imported = await importModuleWithRetry(async () => {
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attempts += 1;
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if (attempts === 1) throw new TypeError("Synthetic transient import failure");
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return module;
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}, async () => { pauses += 1; });
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assert(imported === module, "a second successful import preserves the real module descriptor");
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assert(attempts === 2 && pauses === 1, "a transient failure gets exactly one bounded retry");
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attempts = 0;
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pauses = 0;
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const terminal = new TypeError("Synthetic final import failure");
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let observed: unknown;
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try {
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await importModuleWithRetry(async () => { attempts += 1; throw terminal; }, async () => { pauses += 1; });
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} catch (error) { observed = error; }
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assert(observed === terminal, "a final failure must be reported, never replaced by an empty or fake module");
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assert(attempts === 2 && pauses === 1, "permanent failure cannot start an unbounded retry loop");
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attempts = 0;
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pauses = 0;
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await importModuleWithRetry(async () => { attempts += 1; return module; }, async () => { pauses += 1; });
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assert(attempts === 1 && pauses === 0, "healthy imports do not pause or repeat");
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console.log("Module import retry tests passed.");
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}
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void verifyModuleImportRetry().catch((error) => { throw error; });
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