diff --git a/tests/test_utils_tqdm_mod.py b/tests/test_utils_tqdm_mod.py
index 1c7034778..0b79e51c6 100644
--- a/tests/test_utils_tqdm_mod.py
+++ b/tests/test_utils_tqdm_mod.py
@@ -54,15 +54,36 @@ def test_set_progress_multiple_points():
 
     for i, (expected_progress, expected_value) in enumerate([
         ("0%", "0/5"),
-        ("20%", "1/5"),
-        ("40%", "2/5"),
-        ("70%", "3.5/5.0"),
-        ("100%", "5/5"),
+        ("20%", "1.0/5"),
+        ("40%", "2.0/5"),
+        ("70%", "3.5/5"),
+        ("100%", "5.0/5"),
     ]):
         assert re.search(r"^SetBar:\s+" + re.escape(expected_progress), lines[i])
         assert expected_value in lines[i]
         bar = get_bar_visual(lines[i])
 
+# test format_sizeof rounding
+def test_set_progress_decimal_precision():
+    f = io.StringIO()
+    with redirect_stdout(f):
+        bar = tqdm_mod(total=5, desc="FloatBar", file=f, miniters=1, mininterval=0)
+        bar.set(1.3333)
+        bar.set(3.6666)
+        bar.set(4.999)
+        bar.close()
+
+    lines = extract_lines(f.getvalue(), "FloatBar")
+
+    expected_values = [
+        "1.3/5",
+        "3.7/5",
+        "5.0/5",  
+    ]
+
+    for expected in expected_values:
+        assert any(expected in line for line in lines), f"{expected} not found in output:\n" + "\n".join(lines)
+
 def test_custom_unit():
     f = io.StringIO()
     with redirect_stdout(f):