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test/helpers/logger-test-helpers.js

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+// Shared test utilities for logger tests
+
+// Mock console.log to capture output
+let capturedLogs = [];
+let capturedErrors = [];
+const originalConsoleLog = console.log;
+const originalConsoleError = console.error;
+const originalIsTTY = Deno.stdout.isTerminal();
+
+export function mockConsole() {
+  console.log = (...args) => {
+    capturedLogs.push(args.join(' '));
+  };
+}
+
+export function mockConsoleError() {
+  console.error = (...args) => {
+    capturedErrors.push(args);
+  };
+}
+
+export function restoreConsole() {
+  console.log = originalConsoleLog;
+  capturedLogs = [];
+}
+
+export function restoreConsoleError() {
+  console.error = originalConsoleError;
+  capturedErrors = [];
+}
+
+export function getCapturedLogs() {
+  return capturedLogs;
+}
+
+export function getCapturedErrors() {
+  return capturedErrors;
+}
+
+export function clearCapturedLogs() {
+  capturedLogs = [];
+}
+
+export function clearCapturedErrors() {
+  capturedErrors = [];
+}
+
+let mockIsTTY = originalIsTTY;
+
+export function setTTYMode(isTTY) {
+  mockIsTTY = isTTY;
+  // Mock Deno.stdout.isTerminal for testing
+  Deno.stdout.isTerminal = () => mockIsTTY;
+}
+
+export function restoreTTY() {
+  mockIsTTY = originalIsTTY;
+  // Restore original Deno.stdout.isTerminal
+  Deno.stdout.isTerminal = () => originalIsTTY;
+}
+
+// Helper to setup both console mocks
+export function setupMocks() {
+  mockConsole();
+  mockConsoleError();
+}
+
+// Helper to restore both console mocks
+export function restoreMocks() {
+  restoreConsole();
+  restoreConsoleError();
+}
+
+// Helper to get parsed JSON from first captured log
+export function getFirstLogAsJSON() {
+  if (capturedLogs.length === 0) {
+    throw new Error('No logs captured');
+  }
+  return JSON.parse(capturedLogs[0]);
+}