diff --git a/tests/test_utils_tqdm_mod.py b/tests/test_utils_tqdm_mod.py
index 74bdba12f..869ed7885 100644
--- a/tests/test_utils_tqdm_mod.py
+++ b/tests/test_utils_tqdm_mod.py
@@ -82,31 +82,47 @@ def test_format_sizeof_alignment():
 
 # test format_sizeof rounding using tqdm
 def test_float_alignment_in_bar():
-    import io
-    from contextlib import redirect_stdout
 
+    # Capture the tqdm output into a string buffer
     f = io.StringIO()
     with redirect_stdout(f):
         bar = tqdm_mod(total=100.12, desc="AlignBar", file=f)
-        bar.set(1.3)
+        bar.set(1.3333)
         bar.set(12.5)
-        bar.set(99.9)
+        bar.set(99.98)
         bar.set(100.0)
-        bar.set(100.1)
+        bar.set(100.12)
         bar.close()
 
+    # Extract lines containing the label
     lines = extract_lines(f.getvalue(), "AlignBar")
-    
-    # Extrait uniquement les morceaux contenant "xx.x/100.1"
+
+    # Expected strings that should appear in the output, rounded with format_sizeof
+    expected_values = [
+        "  1.3/100.1",
+        " 12.5/100.1",
+        " 99.9/100.1",
+        "100.0/100.1",
+        "100.1/100.1",
+    ]
+
+    # Extract progress values matching the format "xx.x/100.1"
     values = []
     for line in lines:
         match = re.search(r"(\d{1,3}\.\d)/100\.1", line)
         if match:
-            values.append(match.group(0))  # e.g. "  1.3/100.1"
+            values.append(match.group(0))
 
-    # Vérifie que toutes les chaînes ont exactement la même longueur
+    # Ensure raw 100.12 never appears : format_sizeof must have truncated it
+    assert all("100.12" not in line for line in lines), "Unrounded value '100.12' found in output!"
+
+    # Ensure all expected formatted values are found in the output
+    for expected in expected_values:
+        assert expected in values, f"Missing expected value: {expected}"
+
+    # Ensure all values are visually aligned thanks to format_sizeof : all outouts with same length
     lengths = [len(v) for v in values]
-    assert len(set(lengths)) == 1, f"Lengths differ: {lengths}, values: {values}"
+    assert len(set(lengths)) == 1, f"Misaligned values: {values}"
 
 
 def test_custom_unit():