test(theme): add unit tests for flagsmithTheme

Add tests for buildFlagUrl and buildProjectUrl URL builder functions.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: talissoncosta

src/theme/flagsmithTheme.test.ts

@@ -0,0 +1,123 @@
+import {
+  flagsmithColors,
+  FLAGSMITH_DASHBOARD_URL,
+  buildFlagUrl,
+  buildProjectUrl,
+} from './flagsmithTheme';
+
+describe('flagsmithTheme', () => {
+  describe('flagsmithColors', () => {
+    it('exports primary color', () => {
+      expect(flagsmithColors.primary).toBe('#0AC2A3');
+    });
+
+    it('exports secondary color', () => {
+      expect(flagsmithColors.secondary).toBe('#7B51FB');
+    });
+
+    it('exports status colors', () => {
+      expect(flagsmithColors.enabled).toBe('#4CAF50');
+      expect(flagsmithColors.disabled).toBe('#9E9E9E');
+      expect(flagsmithColors.warning).toBe('#FF9800');
+    });
+
+    it('exports background colors', () => {
+      expect(flagsmithColors.background.enabled).toBeDefined();
+      expect(flagsmithColors.background.disabled).toBeDefined();
+      expect(flagsmithColors.background.warning).toBeDefined();
+    });
+  });
+
+  describe('FLAGSMITH_DASHBOARD_URL', () => {
+    it('is set to the Flagsmith app URL', () => {
+      expect(FLAGSMITH_DASHBOARD_URL).toBe('https://app.flagsmith.com');
+    });
+  });
+
+  describe('buildFlagUrl', () => {
+    it('builds URL with all parameters', () => {
+      const url = buildFlagUrl('123', '456', '789');
+
+      expect(url).toBe(
+        'https://app.flagsmith.com/project/123/environment/456/features?feature=789',
+      );
+    });
+
+    it('builds URL without feature ID', () => {
+      const url = buildFlagUrl('123', '456');
+
+      expect(url).toBe(
+        'https://app.flagsmith.com/project/123/environment/456/features',
+      );
+    });
+
+    it('handles numeric parameters', () => {
+      const url = buildFlagUrl(123, 456, 789);
+
+      expect(url).toBe(
+        'https://app.flagsmith.com/project/123/environment/456/features?feature=789',
+      );
+    });
+
+    it('handles mixed string and number parameters', () => {
+      const url = buildFlagUrl('123', 456, '789');
+
+      expect(url).toBe(
+        'https://app.flagsmith.com/project/123/environment/456/features?feature=789',
+      );
+    });
+
+    it('handles undefined feature ID', () => {
+      const url = buildFlagUrl('123', '456', undefined);
+
+      expect(url).toBe(
+        'https://app.flagsmith.com/project/123/environment/456/features',
+      );
+    });
+  });
+
+  describe('buildProjectUrl', () => {
+    it('builds URL with project and environment ID', () => {
+      const url = buildProjectUrl('123', '456');
+
+      expect(url).toBe(
+        'https://app.flagsmith.com/project/123/environment/456/features',
+      );
+    });
+
+    it('builds URL with only project ID', () => {
+      const url = buildProjectUrl('123');
+
+      expect(url).toBe('https://app.flagsmith.com/project/123');
+    });
+
+    it('handles numeric project ID', () => {
+      const url = buildProjectUrl(123, 456);
+
+      expect(url).toBe(
+        'https://app.flagsmith.com/project/123/environment/456/features',
+      );
+    });
+
+    it('handles undefined environment ID', () => {
+      const url = buildProjectUrl('123', undefined);
+
+      expect(url).toBe('https://app.flagsmith.com/project/123');
+    });
+
+    it('handles empty string environment ID as falsy', () => {
+      // Empty string is falsy, so should return project-only URL
+      const url = buildProjectUrl('123', '');
+
+      expect(url).toBe('https://app.flagsmith.com/project/123');
+    });
+
+    it('handles 0 as valid environment ID', () => {
+      // 0 is falsy but could be a valid ID
+      const url = buildProjectUrl('123', 0);
+
+      // Current implementation treats 0 as falsy
+      expect(url).toBe('https://app.flagsmith.com/project/123');
+    });
+  });
+});