0e3c9e4a0e
Add syntax highlighting to markdown code blocks in the TUI using
cli-highlight with a VS Code Dark-inspired color theme.
Features:
- 191 languages supported via highlight.js
- Auto-detection fallback for unknown languages
- Graceful fallback to plain styling on errors
- VS Code Dark-inspired color palette
Colors:
- Purple: keywords (const, function, if, etc.)
- Teal: built-ins (console, Math, print, etc.)
- Orange: strings
- Green: numbers, comments
- Yellow: function names
- Blue: literals (true, false, null)
- Red: diff deletions
- Light blue: variables, parameters
🤖 AI-assisted (Claude) - fully tested locally
96 lines
3.0 KiB
TypeScript
96 lines
3.0 KiB
TypeScript
import { describe, expect, it } from "vitest";
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import { markdownTheme } from "./theme.js";
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describe("markdownTheme", () => {
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describe("highlightCode", () => {
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it("should highlight JavaScript code", () => {
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const code = `const x = 42;`;
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const result = markdownTheme.highlightCode!(code, "javascript");
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expect(result).toBeInstanceOf(Array);
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expect(result).toHaveLength(1);
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// Should contain ANSI escape codes
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expect(result[0]).toContain("\x1b[");
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});
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it("should highlight TypeScript code with multiple lines", () => {
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const code = `function greet(name: string) {
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return "Hello, " + name;
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}`;
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const result = markdownTheme.highlightCode!(code, "typescript");
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expect(result).toHaveLength(3);
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// Each line should have highlighting
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result.forEach((line) => {
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expect(line).toContain("\x1b[");
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});
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});
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it("should highlight Python code", () => {
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const code = `def hello():
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print("world")`;
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const result = markdownTheme.highlightCode!(code, "python");
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expect(result).toHaveLength(2);
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expect(result[0]).toContain("\x1b["); // def keyword colored
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});
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it("should handle unknown languages with auto-detection", () => {
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const code = `const x = 42;`;
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const result = markdownTheme.highlightCode!(code, "not-a-real-language");
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expect(result).toBeInstanceOf(Array);
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expect(result).toHaveLength(1);
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// Should still return something (auto-detected or fallback)
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expect(result[0].length).toBeGreaterThan(0);
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});
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it("should handle code without language specifier", () => {
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const code = `echo "hello"`;
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const result = markdownTheme.highlightCode!(code, undefined);
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expect(result).toBeInstanceOf(Array);
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expect(result).toHaveLength(1);
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});
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it("should handle empty code", () => {
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const result = markdownTheme.highlightCode!("", "javascript");
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expect(result).toBeInstanceOf(Array);
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expect(result).toHaveLength(1);
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expect(result[0]).toBe("");
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});
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it("should highlight bash/shell code", () => {
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const code = `#!/bin/bash
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echo "Hello"
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for i in {1..5}; do
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echo $i
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done`;
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const result = markdownTheme.highlightCode!(code, "bash");
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expect(result).toHaveLength(5);
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// Should have colored output
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expect(result.some((line) => line.includes("\x1b["))).toBe(true);
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});
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it("should highlight JSON", () => {
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const code = `{"name": "test", "count": 42, "active": true}`;
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const result = markdownTheme.highlightCode!(code, "json");
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expect(result).toHaveLength(1);
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expect(result[0]).toContain("\x1b[");
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});
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it("should handle code with special characters", () => {
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const code = `const regex = /\\d+/g;
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const str = "Hello\\nWorld";`;
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const result = markdownTheme.highlightCode!(code, "javascript");
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expect(result).toHaveLength(2);
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// Should not throw and should return valid output
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expect(result[0].length).toBeGreaterThan(0);
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});
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});
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});
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