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std/yaml/stringify_test.ts

Deno standard library
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// Ported from js-yaml v3.13.1:// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals, assertThrows } from "../assert/mod.ts";import { stringify } from "./stringify.ts";import { YAMLError } from "./_error.ts";import { DEFAULT_SCHEMA, EXTENDED_SCHEMA } from "./schema/mod.ts";import { Type } from "./type.ts";
Deno.test({ name: "stringify()", fn() { const FIXTURE = { foo: { bar: true, test: [ "a", "b", { a: false, }, { a: false, }, ], }, test: "foobar", binary: new Uint8Array([72, 101, 108, 108, 111]), };
const ASSERTS = `foo: bar: true test: - a - b - a: false - a: falsetest: foobarbinary: !<tag:yaml.org,2002:binary> SGVsbG8=`;
assertEquals(stringify(FIXTURE), ASSERTS); },});
Deno.test({ name: "stringify() throws with `!!js/*` yaml types with default schemas", fn() { const object = { undefined: undefined }; assertThrows( () => stringify(object), YAMLError, "unacceptable kind of an object to dump", ); },});
Deno.test({ name: "stringify() handles `!!js/*` yaml types with extended schema", fn() { const object = { regexp: { simple: /foobar/, modifiers: /foobar/im, }, undefined: undefined, };
const expected = `regexp: simple: !<tag:yaml.org,2002:js/regexp> /foobar/ modifiers: !<tag:yaml.org,2002:js/regexp> /foobar/imundefined: !<tag:yaml.org,2002:js/undefined> ''`;
assertEquals(stringify(object, { schema: EXTENDED_SCHEMA }), expected); },});
Deno.test({ name: "stringify() throws with `!!js/function` yaml types with extended schema", fn() { const func = function foobar() { return "hello world!"; };
assertThrows( () => stringify({ function: func }, { schema: EXTENDED_SCHEMA }), ); },});
Deno.test({ name: "stringify() 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 }; }, predicate(object: unknown) { return !!(object && typeof object === "object" && "x" in object && "y" in object && "z" in object); }, represent(point) { return [point.x, point.y, point.z]; }, }); const SPACE_SCHEMA = DEFAULT_SCHEMA.extend({ explicit: [PointYamlType] });
const object = { point: { x: 1, y: 2, z: 3 }, };
const expected = `point: !<!point>${" "} - 1 - 2 - 3`;
assertEquals(stringify(object, { schema: SPACE_SCHEMA }), expected); },});