Add integration tests for content

tests/integration/ContentProcessing.integration.test.js

@@ -0,0 +1,98 @@
+import { describe, it, expect, vi, beforeEach } from "vitest";
+import fs from "fs";
+import path from "path";
+
+// Mock fs and path modules
+vi.mock("fs");
+vi.mock("path");
+
+// Import the content processing functions
+import { getBlogPostFiles, markdownToHtml } from "../../lib/content";
+
+describe("Content Processing Integration", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  describe("File System Integration", () => {
+    it("should read blog post files from content directory", () => {
+      const mockFiles = ["post1.md", "post2.md", "image.png", "post3.md"];
+      fs.readdirSync.mockReturnValue(mockFiles);
+
+      const result = getBlogPostFiles();
+
+      expect(fs.readdirSync).toHaveBeenCalledWith(
+        path.join(process.cwd(), "content/blog")
+      );
+      expect(result).toEqual(["post1.md", "post2.md", "post3.md"]);
+    });
+
+    it("should handle directory read errors gracefully", () => {
+      fs.readdirSync.mockImplementation(() => {
+        throw new Error("Directory not found");
+      });
+
+      const result = getBlogPostFiles();
+
+      expect(result).toEqual([]);
+    });
+
+    it("should filter out non-markdown files", () => {
+      const mockFiles = [
+        "post1.md",
+        "post2.mdx",
+        "image.png",
+        "post3.md",
+        "readme.txt",
+      ];
+      fs.readdirSync.mockReturnValue(mockFiles);
+
+      const result = getBlogPostFiles();
+
+      expect(result).toEqual(["post1.md", "post2.mdx", "post3.md"]);
+    });
+  });
+
+  describe("Markdown to HTML Integration", () => {
+    it("should convert markdown to HTML with proper formatting", () => {
+      const markdown = `# Main Title
+
+## Subtitle
+
+This is a paragraph with **bold** and *italic* text.
+
+- List item 1
+- List item 2
+
+[Link text](https://example.com)`;
+
+      const result = markdownToHtml(markdown);
+
+      expect(result).toContain("<h1>Main Title</h1>");
+      expect(result).toContain("<h2>Subtitle</h2>");
+      expect(result).toContain("<strong>bold</strong>");
+      expect(result).toContain("<em>italic</em>");
+      expect(result).toContain('<a href="https://example.com">Link text</a>');
+    });
+
+    it("should handle empty markdown gracefully", () => {
+      const result = markdownToHtml("");
+
+      expect(result).toBe("");
+    });
+
+    it("should handle markdown with special characters", () => {
+      const markdown = `# Title with Special Characters: & < > " '
+
+Content with **bold** and *italic* text.`;
+
+      const result = markdownToHtml(markdown);
+
+      expect(result).toContain(
+        "<h1>Title with Special Characters: & < > \" '</h1>"
+      );
+      expect(result).toContain("<strong>bold</strong>");
+      expect(result).toContain("<em>italic</em>");
+    });
+  });
+});