🧪 Add unit tests for src/torch-config.mjs and refactor for testability

- Extract parseTorchConfig for better isolation in tests.
- Add _resetTorchConfigCache for deterministic unit testing.
- Implement comprehensive tests in test/torch-config.test.mjs covering:
  - Path resolution with env var support.
  - Normalization of cadence and status.
  - Roster parsing and filtering.
  - Error handling for malformed config files.
  - Caching behavior.

Co-authored-by: PR0M3TH3AN <[email protected]>

src/torch-config.mjs

@@ -27,27 +27,14 @@ export function getTorchConfigPath() {
   return path.resolve(process.cwd(), DEFAULT_CONFIG_PATH);
 }
 
-export function loadTorchConfig() {
-  if (cachedConfig) return cachedConfig;
-
-  const configPath = getTorchConfigPath();
-  let raw = {};
-
-  if (fs.existsSync(configPath)) {
-    try {
-      raw = JSON.parse(fs.readFileSync(configPath, 'utf8'));
-    } catch (err) {
-      throw new Error(`Failed to parse ${configPath}: ${err.message}`, { cause: err });
-    }
-  }
-
+export function parseTorchConfig(raw, configPath = null) {
   const nostrLock = raw.nostrLock || {};
   const dashboard = raw.dashboard || {};
   const scheduler = raw.scheduler || {};
   const firstPromptByCadence = scheduler.firstPromptByCadence || {};
   const paused = scheduler.paused || {};
 
-  cachedConfig = {
+  return {
     configPath,
     raw,
     nostrLock: {
@@ -84,6 +71,27 @@ export function loadTorchConfig() {
       },
     },
   };
+}
 
+/** @internal */
+export function _resetTorchConfigCache() {
+  cachedConfig = null;
+}
+
+export function loadTorchConfig() {
+  if (cachedConfig) return cachedConfig;
+
+  const configPath = getTorchConfigPath();
+  let raw = {};
+
+  if (fs.existsSync(configPath)) {
+    try {
+      raw = JSON.parse(fs.readFileSync(configPath, 'utf8'));
+    } catch (err) {
+      throw new Error(`Failed to parse ${configPath}: ${err.message}`, { cause: err });
+    }
+  }
+
+  cachedConfig = parseTorchConfig(raw, configPath);
   return cachedConfig;
 }

test/torch-config.test.mjs

@@ -0,0 +1,184 @@
+import { test, describe, it, after, beforeEach } from 'node:test';
+import assert from 'node:assert';
+import fs from 'node:fs';
+import path from 'node:path';
+import { getTorchConfigPath, parseTorchConfig, loadTorchConfig, _resetTorchConfigCache } from '../src/torch-config.mjs';
+
+describe('torch-config', () => {
+  describe('getTorchConfigPath', () => {
+    const originalEnv = process.env.TORCH_CONFIG_PATH;
+
+    after(() => {
+      if (originalEnv === undefined) {
+        delete process.env.TORCH_CONFIG_PATH;
+      } else {
+        process.env.TORCH_CONFIG_PATH = originalEnv;
+      }
+    });
+
+    it('returns default path when env var is not set', () => {
+      delete process.env.TORCH_CONFIG_PATH;
+      const expected = path.resolve(process.cwd(), 'torch-config.json');
+      assert.strictEqual(getTorchConfigPath(), expected);
+    });
+
+    it('returns custom path when env var is set', () => {
+      process.env.TORCH_CONFIG_PATH = 'custom-config.json';
+      const expected = path.resolve(process.cwd(), 'custom-config.json');
+      assert.strictEqual(getTorchConfigPath(), expected);
+    });
+
+    it('trims env var value', () => {
+      process.env.TORCH_CONFIG_PATH = '  trimmed-config.json  ';
+      const expected = path.resolve(process.cwd(), 'trimmed-config.json');
+      assert.strictEqual(getTorchConfigPath(), expected);
+    });
+  });
+
+  describe('parseTorchConfig', () => {
+    it('returns default values for empty raw config', () => {
+      const config = parseTorchConfig({}, 'some-path.json');
+      assert.strictEqual(config.configPath, 'some-path.json');
+      assert.deepStrictEqual(config.raw, {});
+      assert.strictEqual(config.nostrLock.namespace, null);
+      assert.strictEqual(config.dashboard.defaultCadenceView, 'daily');
+      assert.strictEqual(config.dashboard.defaultStatusView, 'active');
+      assert.deepStrictEqual(config.scheduler.paused.daily, []);
+    });
+
+    it('correctly parses and normalizes nostrLock config', () => {
+      const raw = {
+        nostrLock: {
+          namespace: ' test ',
+          relays: [' wss://relay1 ', '', 'wss://relay2'],
+          ttlSeconds: 3600.5,
+          queryTimeoutMs: 5000,
+          dailyRoster: ['agent1', 'agent2'],
+        }
+      };
+      const config = parseTorchConfig(raw);
+      assert.strictEqual(config.nostrLock.namespace, 'test');
+      assert.deepStrictEqual(config.nostrLock.relays, ['wss://relay1', 'wss://relay2']);
+      assert.strictEqual(config.nostrLock.ttlSeconds, 3600);
+      assert.strictEqual(config.nostrLock.queryTimeoutMs, 5000);
+      assert.deepStrictEqual(config.nostrLock.dailyRoster, ['agent1', 'agent2']);
+    });
+
+    it('normalizes cadence and status in dashboard config', () => {
+      const raw = {
+        dashboard: {
+          defaultCadenceView: ' WEEKLY ',
+          defaultStatusView: ' ALL '
+        }
+      };
+      const config = parseTorchConfig(raw);
+      assert.strictEqual(config.dashboard.defaultCadenceView, 'weekly');
+      assert.strictEqual(config.dashboard.defaultStatusView, 'all');
+    });
+
+    it('falls back to defaults for invalid cadence/status', () => {
+      const raw = {
+        dashboard: {
+          defaultCadenceView: 'invalid',
+          defaultStatusView: 'invalid'
+        }
+      };
+      const config = parseTorchConfig(raw);
+      assert.strictEqual(config.dashboard.defaultCadenceView, 'daily');
+      assert.strictEqual(config.dashboard.defaultStatusView, 'active');
+    });
+
+    it('correctly parses scheduler config', () => {
+      const raw = {
+        scheduler: {
+          firstPromptByCadence: {
+            daily: ' daily-prompt.md ',
+            weekly: ' weekly-prompt.md '
+          },
+          paused: {
+            daily: [' paused1 '],
+            weekly: [' paused2 ']
+          }
+        }
+      };
+      const config = parseTorchConfig(raw);
+      assert.strictEqual(config.scheduler.firstPromptByCadence.daily, 'daily-prompt.md');
+      assert.strictEqual(config.scheduler.firstPromptByCadence.weekly, 'weekly-prompt.md');
+      assert.deepStrictEqual(config.scheduler.paused.daily, ['paused1']);
+      assert.deepStrictEqual(config.scheduler.paused.weekly, ['paused2']);
+    });
+
+    it('handles non-array roster values by returning null or empty array', () => {
+       const raw = {
+         nostrLock: { dailyRoster: 'not-an-array' },
+         scheduler: { paused: { daily: 'not-an-array' } }
+       };
+       const config = parseTorchConfig(raw);
+       assert.strictEqual(config.nostrLock.dailyRoster, null);
+       assert.deepStrictEqual(config.scheduler.paused.daily, []);
+    });
+  });
+
+  describe('loadTorchConfig', () => {
+    const tempConfigPath = path.resolve(process.cwd(), 'temp-torch-config.json');
+    const badConfigPath = path.resolve(process.cwd(), 'bad-torch-config.json');
+    const originalEnv = process.env.TORCH_CONFIG_PATH;
+
+    beforeEach(() => {
+      _resetTorchConfigCache();
+      delete process.env.TORCH_CONFIG_PATH;
+    });
+
+    after(() => {
+      if (fs.existsSync(tempConfigPath)) fs.unlinkSync(tempConfigPath);
+      if (fs.existsSync(badConfigPath)) fs.unlinkSync(badConfigPath);
+      if (originalEnv === undefined) {
+        delete process.env.TORCH_CONFIG_PATH;
+      } else {
+        process.env.TORCH_CONFIG_PATH = originalEnv;
+      }
+      _resetTorchConfigCache();
+    });
+
+    it('loads config from disk', () => {
+      const raw = { nostrLock: { namespace: 'from-disk' } };
+      fs.writeFileSync(tempConfigPath, JSON.stringify(raw));
+      process.env.TORCH_CONFIG_PATH = tempConfigPath;
+
+      const config = loadTorchConfig();
+      assert.strictEqual(config.nostrLock.namespace, 'from-disk');
+      assert.strictEqual(config.configPath, tempConfigPath);
+    });
+
+    it('returns defaults if file does not exist', () => {
+      process.env.TORCH_CONFIG_PATH = 'non-existent.json';
+      const config = loadTorchConfig();
+      assert.strictEqual(config.nostrLock.namespace, null);
+    });
+
+    it('throws error for malformed JSON', () => {
+       fs.writeFileSync(badConfigPath, '{ invalid json }');
+       process.env.TORCH_CONFIG_PATH = badConfigPath;
+
+       assert.throws(() => {
+         loadTorchConfig();
+       }, /Failed to parse/);
+    });
+
+    it('caches the config', () => {
+      const raw1 = { nostrLock: { namespace: 'first' } };
+      fs.writeFileSync(tempConfigPath, JSON.stringify(raw1));
+      process.env.TORCH_CONFIG_PATH = tempConfigPath;
+
+      const config1 = loadTorchConfig();
+      assert.strictEqual(config1.nostrLock.namespace, 'first');
+
+      const raw2 = { nostrLock: { namespace: 'second' } };
+      fs.writeFileSync(tempConfigPath, JSON.stringify(raw2));
+
+      const config2 = loadTorchConfig();
+      assert.strictEqual(config2.nostrLock.namespace, 'first', 'Should return cached value');
+      assert.strictEqual(config1, config2, 'Should be the same object');
+    });
+  });
+});