diff --git a/pytest.ini b/pytest.ini
index 1f7ce09fc..18a858942 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,3 +1,7 @@
 [pytest]
 testpaths =
     tiled/_tests
+log_cli = 1
+log_cli_level = WARNING
+log_cli_format = %(asctime)s [%(levelname)8s] %(message)s (%(filename)s:%(lineno)s)
+log_cli_date_format=%Y-%m-%d %H:%M:%S
diff --git a/tiled/_tests/conftest.py b/tiled/_tests/conftest.py
index 341368bc8..f9aa778d2 100644
--- a/tiled/_tests/conftest.py
+++ b/tiled/_tests/conftest.py
@@ -78,15 +78,18 @@ def tmpdir_module(request, tmpdir_factory):
     return tmpdir_factory.mktemp(request.module.__name__)
 
 
-# Use this with pytest -s option.
+# Use this with pytest --log-cli-level=25 option.
 if os.getenv("TILED_DEBUG_LEAKED_THREADS"):
+    import logging
     import threading
     import time
 
     def poll_enumerate():
+        logger = logging.getLogger(__name__)
+        msg_level = int(logging.INFO + logging.WARNING) // 2
         while True:
             time.sleep(1)
-            print("THREAD COUNT", len(threading.enumerate()))
+            logger.log(msg_level, "THREAD COUNT = %d", len(threading.enumerate()))
 
     thread = threading.Thread(target=poll_enumerate, daemon=True)
     thread.start()
diff --git a/tiled/_tests/test_array.py b/tiled/_tests/test_array.py
index 9f44f0da0..e2acd556b 100644
--- a/tiled/_tests/test_array.py
+++ b/tiled/_tests/test_array.py
@@ -108,8 +108,12 @@ def test_shape_with_zero(context):
 
 def test_nan_infinity_handler(tmpdir, context):
     client = from_context(context)["inf"]
-    print(f"Metadata: {client['example'].metadata}")
-    print(f"Data: {client['example'].read()}")
+    data = client["example"].read()
+    assert numpy.isnan(data).any()
+    assert numpy.isinf(data).any()
+    metadata = tuple(client["example"].metadata.values())
+    assert numpy.isnan(metadata).any()
+    assert numpy.isinf(metadata).any()
     Path(tmpdir, "testjson").mkdir()
     client["example"].export(Path(tmpdir, "testjson", "test.json"))
 
diff --git a/tiled/_tests/test_hdf5.py b/tiled/_tests/test_hdf5.py
index d662c20ff..ff6c0f66c 100644
--- a/tiled/_tests/test_hdf5.py
+++ b/tiled/_tests/test_hdf5.py
@@ -32,7 +32,7 @@ def example_file_with_vlen_str_in_dataset():
     # Need to do this to make a vlen str dataset
     dt = h5py.string_dtype(encoding="utf-8")
     dset = c.create_dataset("d", (100,), dtype=dt)
-    # print(dset.dtype)
+    assert dset.dtype == "object"
     dset[0] = b"test"
     return file
 
diff --git a/tiled/adapters/tiff.py b/tiled/adapters/tiff.py
index 2365fac6f..f78e8a2da 100644
--- a/tiled/adapters/tiff.py
+++ b/tiled/adapters/tiff.py
@@ -144,7 +144,6 @@ def read(self, slice=None):
         of a group of images
         """
 
-        # Print("Inside Adapter:", slice)
         if slice is None:
             return with_object_cache(self._cache_key, self._seq.asarray)
         if isinstance(slice, int):