diff --git a/src/model/orchestrator/options/orchestrator-folders.test.ts b/src/model/orchestrator/options/orchestrator-folders.test.ts
new file mode 100644
index 00000000..7d5bba62
--- /dev/null
+++ b/src/model/orchestrator/options/orchestrator-folders.test.ts
@@ -0,0 +1,162 @@
+import { OrchestratorFolders } from './orchestrator-folders';
+
+// Mock Orchestrator
+jest.mock('../orchestrator', () => ({
+  __esModule: true,
+  default: {
+    buildParameters: {
+      buildGuid: 'test-guid-abc',
+      cacheKey: 'my-cache-key',
+      projectPath: 'test-project',
+      buildPath: 'Builds',
+      maxRetainedWorkspaces: 0,
+      gitPrivateToken: 'ghp_test123',
+      gitAuthMode: 'url',
+      orchestratorRepoName: 'game-ci/unity-builder',
+      githubRepo: 'user/my-game',
+    },
+    lockedWorkspace: '',
+  },
+}));
+
+jest.mock('../../build-parameters', () => ({
+  __esModule: true,
+  default: {
+    shouldUseRetainedWorkspaceMode: jest.fn().mockReturnValue(false),
+  },
+}));
+
+jest.mock('./orchestrator-options', () => ({
+  __esModule: true,
+  default: {
+    useSharedBuilder: false,
+  },
+}));
+
+// Normalize paths for cross-platform test compatibility
+const normalize = (p: string) => p.replace(/\\/g, '/');
+
+describe('OrchestratorFolders', () => {
+  describe('static constants', () => {
+    it('repositoryFolder is "repo"', () => {
+      expect(OrchestratorFolders.repositoryFolder).toBe('repo');
+    });
+
+    it('buildVolumeFolder is "data"', () => {
+      expect(OrchestratorFolders.buildVolumeFolder).toBe('data');
+    });
+
+    it('cacheFolder is "cache"', () => {
+      expect(OrchestratorFolders.cacheFolder).toBe('cache');
+    });
+  });
+
+  describe('ToLinuxFolder', () => {
+    it('converts backslashes to forward slashes', () => {
+      expect(OrchestratorFolders.ToLinuxFolder('C:\\Users\\test\\project')).toBe('C:/Users/test/project');
+    });
+
+    it('preserves forward slashes', () => {
+      expect(OrchestratorFolders.ToLinuxFolder('/home/user/project')).toBe('/home/user/project');
+    });
+
+    it('handles mixed slashes', () => {
+      expect(OrchestratorFolders.ToLinuxFolder('some/path\\mixed/slashes\\here')).toBe('some/path/mixed/slashes/here');
+    });
+
+    it('handles empty string', () => {
+      expect(OrchestratorFolders.ToLinuxFolder('')).toBe('');
+    });
+  });
+
+  describe('path computations (non-retained workspace mode)', () => {
+    it('uniqueOrchestratorJobFolderAbsolute uses buildGuid', () => {
+      const result = normalize(OrchestratorFolders.uniqueOrchestratorJobFolderAbsolute);
+      expect(result).toBe('/data/test-guid-abc');
+    });
+
+    it('cacheFolderForAllFull returns /data/cache', () => {
+      const result = normalize(OrchestratorFolders.cacheFolderForAllFull);
+      expect(result).toBe('/data/cache');
+    });
+
+    it('cacheFolderForCacheKeyFull includes cache key', () => {
+      const result = normalize(OrchestratorFolders.cacheFolderForCacheKeyFull);
+      expect(result).toBe('/data/cache/my-cache-key');
+    });
+
+    it('repoPathAbsolute is under job folder', () => {
+      const result = normalize(OrchestratorFolders.repoPathAbsolute);
+      expect(result).toBe('/data/test-guid-abc/repo');
+    });
+
+    it('projectPathAbsolute includes project path', () => {
+      const result = normalize(OrchestratorFolders.projectPathAbsolute);
+      expect(result).toBe('/data/test-guid-abc/repo/test-project');
+    });
+
+    it('libraryFolderAbsolute is under project path', () => {
+      const result = normalize(OrchestratorFolders.libraryFolderAbsolute);
+      expect(result).toBe('/data/test-guid-abc/repo/test-project/Library');
+    });
+
+    it('projectBuildFolderAbsolute uses buildPath', () => {
+      const result = normalize(OrchestratorFolders.projectBuildFolderAbsolute);
+      expect(result).toBe('/data/test-guid-abc/repo/Builds');
+    });
+
+    it('lfsFolderAbsolute is under .git/lfs', () => {
+      const result = normalize(OrchestratorFolders.lfsFolderAbsolute);
+      expect(result).toBe('/data/test-guid-abc/repo/.git/lfs');
+    });
+
+    it('lfsCacheFolderFull is under cache key', () => {
+      const result = normalize(OrchestratorFolders.lfsCacheFolderFull);
+      expect(result).toBe('/data/cache/my-cache-key/lfs');
+    });
+
+    it('libraryCacheFolderFull is under cache key', () => {
+      const result = normalize(OrchestratorFolders.libraryCacheFolderFull);
+      expect(result).toBe('/data/cache/my-cache-key/Library');
+    });
+  });
+
+  describe('builderPathAbsolute', () => {
+    it('uses job folder when shared builder is disabled', () => {
+      const result = normalize(OrchestratorFolders.builderPathAbsolute);
+      expect(result).toBe('/data/test-guid-abc/builder');
+    });
+  });
+
+  describe('repo URLs', () => {
+    it('unityBuilderRepoUrl includes token and repo name', () => {
+      const url = OrchestratorFolders.unityBuilderRepoUrl;
+      expect(url).toBe('https://ghp_test123@github.com/game-ci/unity-builder.git');
+    });
+
+    it('targetBuildRepoUrl includes token and github repo', () => {
+      const url = OrchestratorFolders.targetBuildRepoUrl;
+      expect(url).toBe('https://ghp_test123@github.com/user/my-game.git');
+    });
+  });
+
+  describe('purgeRemoteCaching', () => {
+    it('returns false when env var is not set', () => {
+      const original = process.env.PURGE_REMOTE_BUILDER_CACHE;
+      delete process.env.PURGE_REMOTE_BUILDER_CACHE;
+      expect(OrchestratorFolders.purgeRemoteCaching).toBe(false);
+      if (original !== undefined) process.env.PURGE_REMOTE_BUILDER_CACHE = original;
+    });
+
+    it('returns true when env var is set', () => {
+      const original = process.env.PURGE_REMOTE_BUILDER_CACHE;
+      process.env.PURGE_REMOTE_BUILDER_CACHE = 'true';
+      expect(OrchestratorFolders.purgeRemoteCaching).toBe(true);
+      if (original !== undefined) {
+        process.env.PURGE_REMOTE_BUILDER_CACHE = original;
+      } else {
+        delete process.env.PURGE_REMOTE_BUILDER_CACHE;
+      }
+    });
+  });
+});