1 files changed, 53 insertions, 0 deletions
diff --git a/src/tests/test_wav_dump.cc b/src/tests/test_wav_dump.cc
index aa195cc..529d086 100644
--- a/src/tests/test_wav_dump.cc
+++ b/src/tests/test_wav_dump.cc
@@ -238,6 +238,58 @@ void test_clipping_detection() {
   printf("  ✓ Clipping detection works correctly\n");
 }
 
+void test_invalid_file_paths() {
+  printf("Test: Error handling for invalid file paths...\n");
+
+  // Test 1: Null filename (should handle gracefully)
+  {
+    WavDumpBackend wav_backend;
+    wav_backend.set_output_file(nullptr);
+    wav_backend.init(); // Should print error but not crash
+
+    // Verify file didn't open
+    float samples[10] = {0.5f};
+    wav_backend.write_audio(samples, 10); // Should do nothing
+
+    assert(wav_backend.get_samples_written() == 0);
+    wav_backend.shutdown();
+
+    printf("  ✓ Null filename handled gracefully\n");
+  }
+
+  // Test 2: Invalid directory path
+  {
+    WavDumpBackend wav_backend;
+    wav_backend.set_output_file("/nonexistent/directory/test.wav");
+    wav_backend.init(); // Should print error but not crash
+
+    float samples[10] = {0.5f};
+    wav_backend.write_audio(samples, 10); // Should do nothing
+
+    assert(wav_backend.get_samples_written() == 0);
+    wav_backend.shutdown();
+
+    printf("  ✓ Invalid directory path handled gracefully\n");
+  }
+
+  // Test 3: Read-only location (permissions error)
+  {
+    WavDumpBackend wav_backend;
+    wav_backend.set_output_file("/test.wav"); // Root directory (no write permission)
+    wav_backend.init(); // Should print error but not crash
+
+    float samples[10] = {0.5f};
+    wav_backend.write_audio(samples, 10); // Should do nothing
+
+    assert(wav_backend.get_samples_written() == 0);
+    wav_backend.shutdown();
+
+    printf("  ✓ Permission denied handled gracefully\n");
+  }
+
+  printf("  ✓ All error cases handled without crashes\n");
+}
+
 #endif /* !defined(STRIP_ALL) */
 
 int main() {
@@ -246,6 +298,7 @@ int main() {
   test_wav_format_matches_live_audio();
   test_wav_stereo_buffer_size();
   test_clipping_detection();
+  test_invalid_file_paths();
   printf("\n✅ All WAV Dump tests PASSED\n");
   return 0;
 #else