64 lines
2.3 KiB
TypeScript
64 lines
2.3 KiB
TypeScript
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import { writeFile } from "node:fs/promises";
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import { join } from "node:path";
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import { describe, expect, it } from "vitest";
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import { analysisViewCaptureEvidence } from "../../../tests/fixtures/analysisView.js";
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import { createTestTempDirectory } from "../../../tests/fixtures/temporaryDirectory.js";
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import { ArtifactResourceScope } from "../../artifacts/ArtifactResourceScope.js";
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import {
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estimateJsonValueBytes,
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readEvidenceFileSource,
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requireAuthenticationHeadroom,
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} from "./evidenceFileSource.js";
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describe("evidence-file source", () => {
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it("estimates parsed JSON at no less than its UTF-16 text", () => {
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const text = "x".repeat(1000);
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expect(estimateJsonValueBytes(text)).toBeGreaterThanOrEqual(2000);
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expect(
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estimateJsonValueBytes({ outer: [text, { inner: text }] }),
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).toBeGreaterThan(2 * estimateJsonValueBytes(text));
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});
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it("refuses authentication when live heap headroom cannot hold its copies", () => {
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const value = { normalized_result: "y".repeat(10_000) };
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expect(
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requireAuthenticationHeadroom(value, "/tmp/capture.json", 1024),
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).toMatchObject({
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ok: false,
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error: {
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_tag: "AnalysisResourceConstraintError",
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resource: "memory",
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reportedLimits: {
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input_path: "/tmp/capture.json",
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available_heap_bytes: 1024,
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},
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},
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});
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expect(
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requireAuthenticationHeadroom(value, "/tmp/capture.json", 1 << 30),
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).toEqual({ ok: true, value: undefined });
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});
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it("refuses a cancelled request before reading and reads within the caller's resource scope", async () => {
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const controller = new AbortController();
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controller.abort();
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expect(
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await readEvidenceFileSource("/nonexistent/capture.json", {
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signal: controller.signal,
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}),
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).toMatchObject({ ok: false, error: { _tag: "AnalysisCancelledError" } });
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const path = join(
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await createTestTempDirectory("rea-evidence-file-source-"),
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"capture.json",
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);
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const parent = analysisViewCaptureEvidence();
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await writeFile(path, JSON.stringify(parent));
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const resources = new ArtifactResourceScope();
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const read = await readEvidenceFileSource(path, { resources });
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await resources.close();
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if (!read.ok) throw read.error;
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expect(read.value).toEqual(JSON.parse(JSON.stringify(parent)));
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});
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});
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