fix(cdk): validate check_interval >= 1 to prevent ZeroDivisionError

Co-Authored-By: bot_apk <apk@cognition.ai>

Author: devin-ai-integration[bot]

airbyte_cdk/utils/memory_monitor.py

@@ -43,6 +43,8 @@ def __init__(
         critical_threshold: float = _DEFAULT_CRITICAL_THRESHOLD,
         check_interval: int = _DEFAULT_CHECK_INTERVAL,
     ) -> None:
+        if check_interval < 1:
+            raise ValueError(f"check_interval must be >= 1, got {check_interval}")
         self._warning_threshold = warning_threshold
         self._critical_threshold = critical_threshold
         self._check_interval = check_interval

unit_tests/utils/test_memory_monitor.py

@@ -45,6 +45,23 @@ def mock_read_text(self: Path) -> str:
     return mock_read_text
 
 
+# ---------------------------------------------------------------------------
+# __init__ — input validation
+# ---------------------------------------------------------------------------
+
+
+def test_check_interval_zero_raises() -> None:
+    """check_interval=0 should raise ValueError at construction time."""
+    with pytest.raises(ValueError, match="check_interval must be >= 1"):
+        MemoryMonitor(check_interval=0)
+
+
+def test_check_interval_negative_raises() -> None:
+    """Negative check_interval should raise ValueError at construction time."""
+    with pytest.raises(ValueError, match="check_interval must be >= 1"):
+        MemoryMonitor(check_interval=-1)
+
+
 # ---------------------------------------------------------------------------
 # check_memory_usage — no-op paths
 # ---------------------------------------------------------------------------