chore: increase test coverage (#87)

Author: deer

deno.json

@@ -1,9 +1,12 @@
 {
   "tasks": {
     "build": "deno run --allow-read --allow-write --allow-net --allow-run --allow-env ./style/patch.ts && deno fmt",
+    "check:types": "deno check **/*.ts",
+    "coverage": "deno test --allow-read --coverage=cov_profile",
     "dev": "deno run -A --unstable --watch --no-check ./example/main.ts",
-    "test": "deno test --allow-read",
-    "coverage": "deno test --allow-read --coverage=cov_profile"
+    "ok": "deno fmt --check && deno lint && deno task check:types && deno task test",
+    "report": "deno coverage cov_profile --html",
+    "test": "deno test --allow-read"
   },
   "fmt": {
     "exclude": ["./test/fixtures/alerts.md"]

test/fixtures/codeMath.html

@@ -0,0 +1 @@
+<span class="katex-display"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>y</mi><mo>=</mo><mi>m</mi><mi>x</mi><mo>+</mo><mi>b</mi></mrow><annotation encoding="application/x-tex">y = mx + b</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.625em;vertical-align:-0.1944em"></span><span class="mathnormal" style="margin-right:0.03588em">y</span><span class="mspace" style="margin-right:0.2778em"></span><span>=</span><span class="mspace" style="margin-right:0.2778em"></span></span><span class="base"><span class="strut" style="height:0.6667em;vertical-align:-0.0833em"></span><span class="mathnormal">m</span><span class="mathnormal">x</span><span class="mspace" style="margin-right:0.2222em"></span><span>+</span><span class="mspace" style="margin-right:0.2222em"></span></span><span class="base"><span class="strut" style="height:0.6944em"></span><span class="mathnormal">b</span></span></span></span></span>

test/test.ts

@@ -1,5 +1,5 @@
-import { assertEquals } from "https://deno.land/std@0.178.0/testing/asserts.ts";
-import { DOMParser } from "https://deno.land/x/[email protected].35-alpha/deno-dom-wasm.ts";
+import { assertEquals } from "https://deno.land/std@0.211.0/assert/assert_equals.ts";
+import { DOMParser } from "https://deno.land/x/[email protected].43/deno-dom-wasm.ts";
 import { render, Renderer } from "../mod.ts";
 
 Deno.test("Basic markdown", async () => {
@@ -106,3 +106,105 @@ Deno.test(
     assertEquals(html, expected);
   },
 );
+
+Deno.test("Iframe rendering", () => {
+  const markdown =
+    'Here is an iframe:\n\n<iframe src="https://example.com" width="300" height="200"></iframe>';
+  const expected =
+    `<p>Here is an iframe:</p>\n<iframe src="https://example.com" width="300" height="200"></iframe>`;
+
+  const html = render(markdown, { allowIframes: true });
+  assertEquals(html, expected);
+});
+
+Deno.test("Iframe rendering disabled", () => {
+  const markdown =
+    'Here is an iframe:\n\n<iframe src="https://example.com" width="300" height="200"></iframe>';
+  const expectedWithoutIframe = `<p>Here is an iframe:</p>\n`;
+
+  const html = render(markdown);
+  assertEquals(html, expectedWithoutIframe);
+});
+
+Deno.test("Media URL transformation", () => {
+  const markdown = "![Image](image.jpg)\n\n![Video](video.mp4)";
+  const mediaBaseUrl = "https://cdn.example.com/";
+  const expected =
+    `<p><img src="https://cdn.example.com/image.jpg" alt="Image" /></p>\n<p><img src="https://cdn.example.com/video.mp4" alt="Video" /></p>\n`;
+
+  const html = render(markdown, { mediaBaseUrl: mediaBaseUrl });
+  assertEquals(html, expected);
+});
+
+Deno.test("Media URL transformation without base URL", () => {
+  const markdown = "![Image](image.jpg)\n\n![Video](video.mp4)";
+  const expectedWithoutTransformation =
+    `<p><img src="image.jpg" alt="Image" /></p>\n<p><img src="video.mp4" alt="Video" /></p>\n`;
+
+  const html = render(markdown);
+  assertEquals(html, expectedWithoutTransformation);
+});
+
+Deno.test("Media URL transformation with invalid URL", () => {
+  const markdown = "![Image](invalid-url)";
+  const mediaBaseUrl = "this is an invalid url";
+  const expected = `<p><img alt="Image" /></p>\n`;
+
+  const html = render(markdown, { mediaBaseUrl: mediaBaseUrl });
+  assertEquals(html, expected);
+});
+
+Deno.test("Inline rendering", () => {
+  const markdown = "My [Deno](https://deno.land) Blog";
+  const expected =
+    `My <a href="https://deno.land" rel="noopener noreferrer">Deno</a> Blog`;
+
+  const html = render(markdown, { inline: true });
+  assertEquals(html, expected);
+});
+
+Deno.test("Inline rendering false", () => {
+  const markdown = "My [Deno](https://deno.land) Blog";
+  const expected =
+    `<p>My <a href="https://deno.land" rel="noopener noreferrer">Deno</a> Blog</p>\n`;
+
+  const html = render(markdown, { inline: false });
+  assertEquals(html, expected);
+});
+
+Deno.test("Link URL resolution with base URL", () => {
+  const markdown = "[Test Link](/path/to/resource)";
+  const baseUrl = "https://example.com/";
+  const expected =
+    `<p><a href="https://example.com/path/to/resource" rel="noopener noreferrer">Test Link</a></p>\n`;
+
+  const html = render(markdown, { baseUrl: baseUrl });
+  assertEquals(html, expected);
+});
+
+Deno.test("Link URL resolution without base URL", () => {
+  const markdown = "[Test Link](/path/to/resource)";
+  const expected =
+    `<p><a href="/path/to/resource" rel="noopener noreferrer">Test Link</a></p>\n`;
+
+  const html = render(markdown);
+  assertEquals(html, expected);
+});
+
+Deno.test("Link URL resolution with invalid URL and base URL", () => {
+  const markdown = "[Test Link](/path/to/resource)";
+  const baseUrl = "this is an invalid url";
+  const expected =
+    `<p><a href="/path/to/resource" rel="noopener noreferrer">Test Link</a></p>\n`;
+
+  const html = render(markdown, { baseUrl: baseUrl });
+  assertEquals(html, expected);
+});
+
+Deno.test("Math rendering in code block", () => {
+  const markdown = "```math\ny = mx + b\n```";
+  const expected = Deno.readTextFileSync("./test/fixtures/codeMath.html");
+
+  const html = render(markdown, { allowMath: true });
+  assertEquals(html, expected);
+});