feat: base testing files

scraper_spec.lua

@@ -0,0 +1,86 @@
+-- Unit tests for web scraping functionality
+describe('cp.scrape', function()
+  local scrape
+  local mock_responses = {}
+
+  before_each(function()
+    scrape = require('cp.scrape')
+
+    -- Mock HTTP responses for different platforms
+    mock_responses.codeforces_contest = [[
+      <div class="problems">
+        <div class="problem" data-problem-id="A">Problem A</div>
+        <div class="problem" data-problem-id="B">Problem B</div>
+      </div>
+    ]]
+
+    mock_responses.codeforces_problem = [[
+      <div class="input">Sample Input</div>
+      <div class="output">Sample Output</div>
+    ]]
+  end)
+
+  describe('contest metadata scraping', function()
+    it('scrapes Codeforces contest problems', function()
+      -- Mock HTTP request, test problem list extraction
+    end)
+
+    it('scrapes Atcoder contest problems', function()
+      -- Test Atcoder format
+    end)
+
+    it('scrapes CSES problem list', function()
+      -- Test CSES format
+    end)
+
+    it('handles network errors gracefully', function()
+      -- Test error handling for failed requests
+    end)
+
+    it('handles parsing errors gracefully', function()
+      -- Test error handling for malformed HTML
+    end)
+  end)
+
+  describe('problem scraping', function()
+    it('extracts test cases from Codeforces problems', function()
+      -- Test test case extraction
+    end)
+
+    it('handles multiple test cases correctly', function()
+      -- Test multiple sample inputs/outputs
+    end)
+
+    it('handles problems with no sample cases', function()
+      -- Test edge case handling
+    end)
+
+    it('extracts problem metadata (time limits, etc.)', function()
+      -- Test metadata extraction
+    end)
+  end)
+
+  describe('platform-specific parsing', function()
+    it('handles Codeforces HTML structure', function()
+      -- Test Codeforces-specific parsing
+    end)
+
+    it('handles Atcoder HTML structure', function()
+      -- Test Atcoder-specific parsing
+    end)
+
+    it('handles CSES HTML structure', function()
+      -- Test CSES-specific parsing
+    end)
+  end)
+
+  describe('rate limiting and caching', function()
+    it('respects rate limits', function()
+      -- Test rate limiting behavior
+    end)
+
+    it('uses cached results when appropriate', function()
+      -- Test caching integration
+    end)
+  end)
+end)