431 lines
14 KiB
TypeScript
431 lines
14 KiB
TypeScript
import { expect, it } from "vitest";
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import { buildJavaScriptSemanticGraph } from "./JavaScriptSemanticGraphBuilder.js";
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import type { JavaScriptArtifactAnalysis } from "./JavaScriptArtifactAnalysisTypes.js";
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import type { JavaScriptArtifactFile } from "./JavaScriptArtifactFiles.js";
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import { queryJavaScriptSemanticGraph } from "../domain/javascriptSemanticQuery.js";
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import { analyzeJavaScriptSemantics } from "../domain/javascriptSemanticAnalysis.js";
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const SHA256 = "a".repeat(64);
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const GRAPH_ID = `jag_${"b".repeat(64)}`;
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it("projects closure and direct interprocedural flow without execution", () => {
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const graph = graphFor(`
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const outer = 2;
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function add(value) { return value + outer; }
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const input = 40;
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const answer = add(input);
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`);
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const relations = new Set(graph.relations.map(({ relation }) => relation));
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for (const expected of [
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"argument-to-parameter",
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"calls",
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"captures",
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"defines",
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"reads",
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"returns-to-call",
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] as const)
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expect(relations.has(expected)).toBe(true);
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expect(graph.limitations).toContain(
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"The semantic graph contains static syntax observations and conservative relationship candidates; it does not claim runtime execution.",
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);
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const parameter = graph.nodes.find(
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({ kind, label }) => kind === "parameter" && label === "value",
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);
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if (parameter === undefined) throw new Error("Expected parameter node");
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const provenance = queryJavaScriptSemanticGraph(graph, {
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seed: { kind: "semantic-node", node_id: parameter.node_id },
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direction: "backward-provenance",
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include_ambiguous_dynamic_edges: true,
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});
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expect(provenance.relations.map(({ relation }) => relation)).toEqual(
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expect.arrayContaining([
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"aliases",
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"argument-to-parameter",
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"defines",
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"reads",
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]),
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);
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});
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it("keeps dynamic calls explicit and returns complete deterministic results", () => {
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const graph = graphFor(`
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const handlers = { ready() { return 1; } };
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const key = process.argv[2];
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handlers[key]();
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`);
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expect(graph.unknowns.some(({ reason }) => reason === "dynamic-call")).toBe(
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true,
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);
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const seedNodeId = graph.relations.find(
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({ relation }) => relation === "defines",
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)?.source_node_id;
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expect(seedNodeId).toBeDefined();
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if (seedNodeId === undefined) throw new Error("Expected a definition seed");
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const first = queryJavaScriptSemanticGraph(graph, {
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seed: { kind: "semantic-node", node_id: seedNodeId },
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direction: "forward-influence",
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include_ambiguous_dynamic_edges: true,
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});
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const repeated = queryJavaScriptSemanticGraph(graph, {
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seed: { kind: "semantic-node", node_id: seedNodeId },
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direction: "forward-influence",
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include_ambiguous_dynamic_edges: true,
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});
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expect(repeated).toEqual(first);
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});
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it("keeps ambiguous interprocedural flow out of the default traversal", () => {
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const graph = graphFor(`
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function left(value) { return value; }
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function right(value) { return value; }
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const input = 1;
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const selected = Math.random() ? left : right;
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selected(input);
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`);
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const input = graph.nodes.find(
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({ kind, label }) => kind === "binding" && label === "input",
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);
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if (input === undefined) throw new Error("Expected input binding");
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const query = {
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seed: { kind: "semantic-node" as const, node_id: input.node_id },
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direction: "forward-influence" as const,
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allowed_relations: [
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"reads" as const,
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"aliases" as const,
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"argument-to-parameter" as const,
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],
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};
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const strict = queryJavaScriptSemanticGraph(graph, query);
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expect(
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strict.relations.some(
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({ relation }) => relation === "argument-to-parameter",
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),
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).toBe(false);
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expect(strict.status).toBe("ambiguous");
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const admitted = queryJavaScriptSemanticGraph(graph, {
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...query,
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include_ambiguous_dynamic_edges: true,
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});
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expect(
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admitted.relations.filter(
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({ relation }) => relation === "argument-to-parameter",
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),
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).toHaveLength(2);
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expect(admitted.status).toBe("ambiguous");
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});
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it("connects caller results, direct returns, parameters, and captures", () => {
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const graph = graphFor(`
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const outer = 2;
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function identity(value) { return value; }
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function readOuter() { return outer; }
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const input = 40;
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const output = identity(input);
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`);
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const binding = (label: string) =>
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graph.nodes.find(
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({ kind, label: nodeLabel }) =>
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["binding", "parameter"].includes(kind) && nodeLabel === label,
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);
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const output = binding("output");
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const input = binding("input");
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const outer = binding("outer");
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const readOuter = graph.nodes.find(
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({ kind, label }) => kind === "function" && label === "readOuter",
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);
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if (
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output === undefined ||
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input === undefined ||
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outer === undefined ||
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readOuter === undefined
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)
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throw new Error("Expected semantic flow nodes");
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const provenance = queryJavaScriptSemanticGraph(graph, {
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seed: { kind: "semantic-node", node_id: output.node_id },
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direction: "backward-provenance",
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});
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expect(provenance.nodes.map(({ node_id }) => node_id)).toContain(
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input.node_id,
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);
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const influence = queryJavaScriptSemanticGraph(graph, {
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seed: { kind: "semantic-node", node_id: outer.node_id },
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direction: "forward-influence",
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allowed_relations: ["captures"],
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});
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expect(influence.nodes.map(({ node_id }) => node_id)).toContain(
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readOuter.node_id,
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);
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const capture = graph.relations.find(
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({ relation }) => relation === "captures",
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);
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expect(capture?.evidence.location).toMatchObject({
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available: true,
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value: { kind: "source-range", source: "app.js" },
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});
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expect(capture?.evidence.location).not.toEqual(readOuter.evidence.location);
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});
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it("reports complete graph coverage for deeply nested static values", () => {
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const nesting = 40;
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const nestedValue =
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Array.from({ length: nesting }, () => "{ next: ").join("") +
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'"value"' +
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" }".repeat(nesting);
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const graph = graphFor(`const nested = ${nestedValue};`);
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expect(graph.coverage).toMatchObject({
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truncated: false,
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omitted_nodes: 0,
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omitted_relations: 0,
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limits: [],
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});
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});
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it("projects bounded Promise ownership and unresolved sources", () => {
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const graph = graphFor(`
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async function run(value) {
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const owned = new Promise((resolve) => resolve(value));
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await Promise.resolve(owned);
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Promise.resolve(value).then(work).finally(cleanup);
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value.then(work);
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return Promise.all([owned, Promise.resolve(value)]);
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}
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`);
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const relations = new Set(graph.relations.map(({ relation }) => relation));
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for (const expected of [
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"aggregates",
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"awaits",
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"chains",
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"creates-promise",
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"detaches-task",
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"owns",
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"returns-task",
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] as const)
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expect(relations.has(expected)).toBe(true);
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expect(graph.nodes.filter(({ kind }) => kind === "promise")).not.toHaveLength(
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0,
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);
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expect(
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graph.nodes.find(
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({ kind, properties }) =>
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kind === "promise" &&
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properties.method === "all" &&
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properties.ownership === "returned",
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),
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).toBeDefined();
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expect(
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graph.unknowns.some(
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({ family, reason }) =>
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family === "promise-ownership" && reason === "ambiguous-target",
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),
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).toBe(true);
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expect(
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graph.coverage.families.find(
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({ family }) => family === "promise-ownership",
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),
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).toMatchObject({ status: "partial" });
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});
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it("keeps duplicate function fingerprints ambiguous", () => {
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const graph = graphFor(`
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function first(value) { return value + 1; }
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function second(input) { return input + 1; }
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`);
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expect(graph.fingerprints).toHaveLength(2);
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const digest = graph.fingerprints[0]?.fingerprint_sha256;
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expect(digest).toBeDefined();
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expect(graph.fingerprints[1]?.fingerprint_sha256).toBe(digest);
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if (digest === undefined) throw new Error("Expected fingerprint");
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const query = queryJavaScriptSemanticGraph(graph, {
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seed: { kind: "function", fingerprint_sha256: digest },
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direction: "forward-influence",
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});
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expect(query.status).toBe("ambiguous");
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expect(query.summary.total_seed_matches).toBe(2);
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});
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const graphFor = (source: string) => {
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const file: JavaScriptArtifactFile = {
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path: "app.js",
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container_sha256: SHA256,
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sha256: SHA256,
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bytes: Buffer.byteLength(source),
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inventory_artifact_id: `art_${SHA256}`,
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kind: "javascript",
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unpacked: false,
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text: { included: true, value: source },
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};
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const analysis: JavaScriptArtifactAnalysis = {
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files: [
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{
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file,
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javascript: null,
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semantic: {
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ir: analyzeJavaScriptSemantics(source),
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},
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},
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],
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packages: [],
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json_modules: [],
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html_scripts: [],
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source_maps: [],
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visited_ast_nodes: 0,
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findings: 0,
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modules: 0,
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parse_failures: 0,
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truncated_scopes: 0,
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limitations: [],
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};
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return buildJavaScriptSemanticGraph({
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rootArtifactSha256: SHA256,
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applicationGraph: { graph_id: GRAPH_ID, nodes: [] },
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analysis,
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});
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};
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it.each([
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"const value = consume(Promise.resolve(1));",
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"async function run() { await consume(Promise.resolve(1)); }",
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"function run() { return consume(Promise.resolve(1)); }",
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"const value = Promise.all([{ promise: Promise.resolve(1) }]);",
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])(
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"does not claim direct Promise ownership through an enclosing expression: %s",
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(source) => {
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const graph = graphFor(source);
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const promise = graph.nodes.find(
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({ kind, properties }) =>
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kind === "promise" && properties.method === "resolve",
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);
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expect(promise?.properties.ownership).toBe("unknown");
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expect(
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graph.relations.filter(
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({ target_node_id, relation }) =>
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target_node_id === promise?.node_id &&
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["owns", "awaits", "returns-task", "aggregates"].includes(relation),
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),
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).toEqual([]);
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},
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);
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it.each([
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"const routes = {'': 'HOME'}; const root = routes[''];",
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"const routes = {'': 'HOME'}; const {'': root} = routes;",
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])(
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"preserves empty property identities with valid display labels: %s",
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(source) => {
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const graph = graphFor(source);
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expect(graph.nodes).toEqual(
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expect.arrayContaining([
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expect.objectContaining({
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kind: "property-slot",
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label: '""',
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properties: expect.objectContaining({ name: "" }),
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}),
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]),
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);
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const root = graph.nodes.find(
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({ kind, label }) => kind === "binding" && label === "root",
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);
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const literal = graph.nodes.find(
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({ kind, identity, properties }) =>
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kind === "literal" &&
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properties.value === "HOME" &&
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identity.role_key.includes(":binding:root:"),
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);
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expect(literal).toBeDefined();
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expect(graph.relations).toEqual(
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expect.arrayContaining([
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expect.objectContaining({
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source_node_id: literal?.node_id,
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target_node_id: root?.node_id,
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relation: "defines",
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resolution: "resolved",
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}),
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]),
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);
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},
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);
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it("keeps exact empty environment keys distinct from dynamic keys", () => {
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const graph = graphFor(`
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const empty = process.env[''];
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const named = process.env.HOME;
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const dynamic = process.env[name];
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`);
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const sources = graph.nodes
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.filter(({ kind }) => kind === "config-source")
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.map(({ label, properties }) => ({ label, key: properties.key }));
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expect(sources).toEqual(
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expect.arrayContaining([
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{ label: '""', key: "" },
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{ label: "HOME", key: "HOME" },
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{ label: "environment", key: null },
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]),
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);
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expect(sources).toHaveLength(3);
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});
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it("labels exact empty method names without inventing computed names", () => {
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const graph = graphFor(`
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const target = {
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['']() { return 42; },
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['""']() { return 2; },
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[key]() { return 1; },
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};
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`);
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const functions = graph.nodes
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.filter(({ kind }) => kind === "function")
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.map(({ label, properties }) => ({ label, name: properties.name }));
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// Both exact names display as `""`; only `properties.name` tells them apart.
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expect(functions).toEqual(
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expect.arrayContaining([
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{ label: '""', name: "" },
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{ label: '""', name: '""' },
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]),
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);
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expect(
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functions.filter(({ label }) => label?.startsWith("[computed@")),
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).toHaveLength(1);
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});
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it.each([
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"Promise.resolve(1)",
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"(Promise.resolve(1) as Promise<number>)",
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"(Promise.resolve(1) satisfies Promise<number>)",
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"Promise.resolve(1)!",
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"((Promise.resolve(1) as Promise<number>)!)",
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"(new Promise(resolve => resolve(1)) as Promise<number>)",
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"(Promise.all([Promise.resolve(1)]) as Promise<number[]>)",
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"(Promise.resolve(1).then(value => value) as Promise<number>)",
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])("projects a traversable returned-task link for %s", (expression) => {
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const graph = graphFor(`const run = () => ${expression};`);
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const promise = graph.nodes.find(
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({ kind, properties }) =>
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kind === "promise" && properties.ownership === "returned",
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);
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const relation = graph.relations.find(
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({ relation: kind }) => kind === "returns-task",
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);
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expect(promise).toBeDefined();
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expect(relation).toMatchObject({
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target_node_id: promise?.node_id,
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resolution: "resolved",
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});
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const returnNode = graph.nodes.find(
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({ node_id }) => node_id === relation?.source_node_id,
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);
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expect(returnNode?.kind).toBe("return-site");
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if (returnNode === undefined)
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throw new Error("Expected the linked return site");
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const query = queryJavaScriptSemanticGraph(graph, {
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seed: { kind: "semantic-node", node_id: returnNode.node_id },
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direction: "forward-influence",
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allowed_relations: ["returns-task"],
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});
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expect(query.relations).toContainEqual(relation);
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expect(query.nodes.map(({ node_id }) => node_id)).toContain(promise?.node_id);
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});
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