deno.land / std@0.224.0 / yaml / parse_test.ts
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import { parse, parseAll } from "./parse.ts";import { assert, assertEquals, assertThrows } from "../assert/mod.ts";import { DEFAULT_SCHEMA, EXTENDED_SCHEMA } from "./schema/mod.ts";import { YAMLError } from "./_error.ts";import { Type } from "./type.ts";
Deno.test({ name: "parse() handles single document yaml string", fn() { const yaml = ` test: toto foo: bar: True baz: 1 qux: ~ `;
const expected = { test: "toto", foo: { bar: true, baz: 1, qux: null } };
assertEquals(parse(yaml), expected); },});
Deno.test({ name: "parseAll() handles yaml string with multiple documents", fn() { const yaml = `---id: 1name: Alice---id: 2name: Bob---id: 3name: Eve `; const expected = [ { id: 1, name: "Alice", }, { id: 2, name: "Bob", }, { id: 3, name: "Eve", }, ]; assertEquals(parseAll(yaml), expected); },});
Deno.test({ name: "parse() throws with `!!js/*` yaml types with default schemas", fn() { const yaml = `undefined: !!js/undefined ~`; assertThrows(() => parse(yaml), YAMLError, "unknown tag !"); },});
Deno.test({ name: "parse() handles `!!js/*` yaml types woth extended schema while parsing", fn() { const yaml = ` regexp: simple: !!js/regexp foobar modifiers: !!js/regexp /foobar/mi undefined: !!js/undefined ~ `;
const expected = { regexp: { simple: /foobar/, modifiers: /foobar/mi, }, undefined: undefined, };
assertEquals(parse(yaml, { schema: EXTENDED_SCHEMA }), expected); },});
Deno.test({ name: "parse() throws with `!!js/function` yaml type with extended schema", fn() { const func = function foobar() { return "hello world!"; };
const yaml = `function: !!js/function >${func.toString().split("\n").map((line) => ` ${line}`).join("\n")}`;
assertThrows(() => parse(yaml, { schema: EXTENDED_SCHEMA })); },});
Deno.test({ name: "parse() handles `!*` yaml user defined types", fn() { const PointYamlType = new Type("!point", { kind: "sequence", resolve(data) { return data !== null && data?.length === 3; }, construct(data) { const [x, y, z] = data; return { x, y, z }; }, }); const SPACE_SCHEMA = DEFAULT_SCHEMA.extend({ explicit: [PointYamlType] });
const yaml = ` point: !point [1, 2, 3] `;
assertEquals(parse(yaml, { schema: SPACE_SCHEMA }), { point: { x: 1, y: 2, z: 3 }, }); },});
Deno.test({ name: "parseAll() accepts parse options", fn() { const yaml = `---regexp: !!js/regexp foo---regexp: !!js/regexp bar `;
const expected = [ { regexp: /foo/, }, { regexp: /bar/, }, ]; const mockCallback = () => { let count = 0; const fn = () => { count++; }; const callback = { calls() { return count; }, fn, }; return callback; };
assertEquals(parseAll(yaml, { schema: EXTENDED_SCHEMA }), expected);
const callback = mockCallback(); assertEquals( parseAll(yaml, callback.fn, { schema: EXTENDED_SCHEMA }), undefined, ); assertEquals(callback.calls(), 2); },});
Deno.test({ name: "parse() handles __proto__", async fn() { // Tests if the value is set using `Object.defineProperty(target, key, {value})` // instead of `target[key] = value` when parsing the object. // This makes a difference in behavior when __proto__ is set in Node.js and browsers. // Using `Object.defineProperty` avoids prototype pollution in Node.js and browsers. // reference: https://github.com/advisories/GHSA-9c47-m6qq-7p4h (CVE-2022-46175)
const yaml1 = `__proto__: isAdmin: true `;
const yaml2 = `anchor: &__proto__ __proto__: 1111alias_test: aaa: *__proto__merge_test: bbb: 2222 <<: *__proto__ `;
const testCode = ` Object.defineProperty(Object.prototype, "__proto__", { set() { throw new Error("Don't try to set the value directly to the key __proto__.") } }); import { parse } from "${import.meta.resolve("./parse.ts")}"; parse(\`${yaml1}\`); parse(\`${yaml2}\`); `; const command = new Deno.Command(Deno.execPath(), { stdout: "inherit", stderr: "inherit", args: ["eval", "--no-lock", testCode], }); const { success } = await command.output(); assert(success); },});
Deno.test({ name: "parse() returns `null` when yaml is empty or only comments", fn() { const expected = null;
const yaml1 = ``; assertEquals(parse(yaml1), expected); const yaml2 = ` \n\n `; assertEquals(parse(yaml2), expected); const yaml3 = `# just a bunch of comments \n # in this file`; assertEquals(parse(yaml3), expected); },});
Deno.test({ name: "parse() handles binary type", fn() { const yaml = `message: !!binary "SGVsbG8="`; assertEquals(parse(yaml), { message: new Uint8Array([72, 101, 108, 108, 111]), }); },});
std
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