markdown/test/AST_To_Markdown.test.js

const expect = require("chai").expect;
const ASTtoMarkdown = require("../lib/compileASTtoMarkdown");
const MarkdownToAST = require("../lib/index");

describe("Compiling AST to Markdown", function () {
	it("sample ast - 1", function () {
		const input = [{ type: "bold", children: ["bold"] }];
		expect(ASTtoMarkdown(input)).to.equal("**bold**");
	});

	it("sample ast - 2", function () {
		const input = [
			{ type: "bold", children: ["my"] },
			{ type: "text", children: ["simple"] },
			{ type: "italics", children: ["AST"] },
		];
		expect(ASTtoMarkdown(input)).to.equal("**my**simple_AST_");
	});

	it("sentence ast", function () {
		const input = [
			{ type: "bold", children: ["Arunkumar"] },
			{ type: "text", children: [" is the "] },
			{ type: "underline", children: ["Best Boy"] },
			{ type: "text", children: [" not the "] },
			{
				type: "italics",
				children: [{ type: "strikethrough", children: ["Worst Boy"] }],
			},
			{ type: "text", children: ["."] },
		];
		expect(ASTtoMarkdown(input)).to.equal(
			"**Arunkumar** is the ==Best Boy== not the _~~Worst Boy~~_.",
		);
	});

	it("link ast", function () {
		const input = [
			{ type: "url", children: ["The Feathers"], url: "feathers.studio" },
		];
		expect(ASTtoMarkdown(input)).to.equal("[The Feathers](feathers.studio)");
	});

	it("Nested ast", function () {
		const input = [
			{
				type: "bold",
				children: [
					"Bold",
					{
						type: "italics",
						children: [
							"Italics",
							{
								type: "strikethrough",
								children: [
									"Strikethrough",
									{ type: "underline", children: ["Underline"] },
									"Strikethrough",
								],
							},
							"Italics",
						],
					},
					"Bold",
				],
			},
		];
		expect(ASTtoMarkdown(input)).to.equal(
			"**Bold_Italics~~Strikethrough==Underline==Strikethrough~~Italics_Bold**",
		);
	});

	it("Markdown -> AST -> Markdown (1)", function () {
		const input =
			"_Checking about the **Latest Trends** in **Development World** makes ourselves ==Progressive==_, [check @ here](https://dev.to). _Moreover, **Typo** is the ==Time killing Error== in Development. So **Avoid ~~typos~~**._";
		expect(ASTtoMarkdown(MarkdownToAST(input))).to.equal(input);
	});

	it("Markdown -> AST -> Markdown (2)", function () {
		const input =
			"**Sunset** is the time of day when our ==sky meets the outer space solar winds==. There are _blue_, _pink_, and _purple_ swirls, spinning and twisting, like ==clouds of balloons caught in a whirlwind==. The sun moves slowly to hide behind the line of horizon, while the moon races to take its place in prominence atop the night sky. People slow to a crawl, entranced, fully forgetting the deeds that must still be done. _==**There is a coolness, a calmness, when the sun does set**==_.";

		expect(ASTtoMarkdown(MarkdownToAST(input))).to.equal(input);
	});
});