80 lines
2.7 KiB
JavaScript
80 lines
2.7 KiB
JavaScript
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import { test, after } from "node:test";
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import assert from "node:assert/strict";
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import { parseJsonc, getMember, removeArrayElements } from "../src/jsonc.js";
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import { cleanupAll } from "./helpers.js";
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after(cleanupAll);
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test("parses JSONC with line + block comments and trailing commas", () => {
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const text = `{
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// a comment
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"version": "2.0.0", /* inline */
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"tasks": [
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{ "label": "a" },
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{ "label": "b" }, // trailing comma below
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],
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}`;
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const r = parseJsonc(text);
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assert.equal(r.ok, true, r.error?.message);
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assert.equal(r.value.version, "2.0.0");
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assert.equal(r.value.tasks.length, 2);
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});
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test("handles a BOM and comment-like sequences inside strings", () => {
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const text = `{ "url": "http://x/y // not a comment", "n": 1 }`;
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const r = parseJsonc(text);
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assert.equal(r.ok, true, r.error?.message);
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assert.equal(r.value.url, "http://x/y // not a comment");
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assert.equal(r.value.n, 1);
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});
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test("reports failure (not throw) on malformed input", () => {
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const r = parseJsonc(`{ "a": }`);
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assert.equal(r.ok, false);
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assert.ok(r.error instanceof Error);
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});
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test("getMember returns the value node for a key", () => {
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const r = parseJsonc(`{ "tasks": [1, 2, 3] }`);
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const node = getMember(r.ast, "tasks");
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assert.equal(node.type, "array");
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assert.equal(node.elements.length, 3);
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});
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test("removeArrayElements deletes the target element and keeps valid JSON", () => {
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const text = `{
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"version": "2.0.0",
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"tasks": [
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{ "label": "build" },
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{ "label": "evil" }
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]
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}`;
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const r = parseJsonc(text);
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const arr = getMember(r.ast, "tasks");
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const edited = removeArrayElements(text, arr, [1]);
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const reparsed = parseJsonc(edited);
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assert.equal(reparsed.ok, true, reparsed.error?.message);
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assert.equal(reparsed.value.tasks.length, 1);
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assert.equal(reparsed.value.tasks[0].label, "build");
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assert.equal(reparsed.value.version, "2.0.0");
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});
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test("removeArrayElements can remove the first element too", () => {
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const text = `{ "tasks": [ { "label": "evil" }, { "label": "keep" } ] }`;
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const r = parseJsonc(text);
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const arr = getMember(r.ast, "tasks");
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const edited = removeArrayElements(text, arr, [0]);
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const reparsed = parseJsonc(edited);
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assert.equal(reparsed.ok, true, reparsed.error?.message);
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assert.deepEqual(reparsed.value.tasks.map((t) => t.label), ["keep"]);
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});
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test("removeArrayElements handles removing adjacent elements", () => {
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const text = `{ "tasks": [ {"i":0}, {"i":1}, {"i":2}, {"i":3} ] }`;
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const r = parseJsonc(text);
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const arr = getMember(r.ast, "tasks");
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const edited = removeArrayElements(text, arr, [1, 2]);
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const reparsed = parseJsonc(edited);
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assert.equal(reparsed.ok, true, reparsed.error?.message);
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assert.deepEqual(reparsed.value.tasks.map((t) => t.i), [0, 3]);
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});
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