From c2bf5336db7c23f2c519740aa6f6eac15295cdd4 Mon Sep 17 00:00:00 2001
From: Cursor Agent <cursoragent@cursor.com>
Date: Thu, 31 Jul 2025 23:07:03 +0000
Subject: [PATCH] Add unit tests for functions utility and string manipulation
 utils

Co-authored-by: skylar-anderson <skylar-anderson@github.com>
---
 app/__tests__/functions.test.ts   | 24 +++++++++++++++++++
 app/utils/__tests__/index.ts      |  0
 app/utils/__tests__/utils.test.ts | 38 +++++++++++++++++++++++++++++++
 3 files changed, 62 insertions(+)
 create mode 100644 app/__tests__/functions.test.ts
 create mode 100644 app/utils/__tests__/index.ts
 create mode 100644 app/utils/__tests__/utils.test.ts

diff --git a/app/__tests__/functions.test.ts b/app/__tests__/functions.test.ts
new file mode 100644
index 0000000..19e7829
--- /dev/null
+++ b/app/__tests__/functions.test.ts
@@ -0,0 +1,24 @@
+import { selectFunctions, runFunction, availableFunctions, FunctionName } from '../functions';
+
+describe('Functions utility', () => {
+  it('selectFunctions returns meta definitions for provided function names', () => {
+    const names: FunctionName[] = ['searchWithBing', 'addMemory'];
+    const defs = selectFunctions(names);
+    expect(defs).toHaveLength(names.length);
+    // Ensure that the returned function definitions correspond to the requested names
+    const returnedNames = defs.map((d) => d.name);
+    names.forEach((n) => expect(returnedNames).toContain(n));
+  });
+
+  it('runFunction throws an error for unknown function name', async () => {
+    await expect(runFunction('unknown_function', {})).rejects.toThrow('Unknown function');
+  });
+
+  it('every entry in availableFunctions exposes meta and run', () => {
+    Object.entries(availableFunctions).forEach(([name, mod]) => {
+      expect(typeof mod.meta).toBe('object');
+      expect(mod.meta.name).toBe(name);
+      expect(typeof mod.run).toBe('function');
+    });
+  });
+});
\ No newline at end of file
diff --git a/app/utils/__tests__/index.ts b/app/utils/__tests__/index.ts
new file mode 100644
index 0000000..e69de29
diff --git a/app/utils/__tests__/utils.test.ts b/app/utils/__tests__/utils.test.ts
new file mode 100644
index 0000000..a7d374a
--- /dev/null
+++ b/app/utils/__tests__/utils.test.ts
@@ -0,0 +1,38 @@
+import { pluralize } from '../pluralize';
+import { capitalize } from '../capitalize';
+
+describe('Utility functions', () => {
+  describe('pluralize', () => {
+    it('handles regular plurals', () => {
+      expect(pluralize('cat')).toBe('cats');
+      expect(pluralize('dog')).toBe('dogs');
+    });
+
+    it('adds "es" for s, sh, ch, x, z endings', () => {
+      expect(pluralize('bus')).toBe('buses');
+      expect(pluralize('box')).toBe('boxes');
+      expect(pluralize('church')).toBe('churches');
+    });
+
+    it('replaces y with ies when appropriate', () => {
+      expect(pluralize('country')).toBe('countries');
+      expect(pluralize('city')).toBe('cities');
+      // Should not replace when preceded by a vowel
+      expect(pluralize('day')).toBe('days');
+    });
+  });
+
+  describe('capitalize', () => {
+    it('capitalizes the first character of a string', () => {
+      expect(capitalize('hello')).toBe('Hello');
+    });
+
+    it('returns the same string when already capitalized', () => {
+      expect(capitalize('World')).toBe('World');
+    });
+
+    it('handles empty strings gracefully', () => {
+      expect(capitalize('')).toBe('');
+    });
+  });
+});
\ No newline at end of file