diff --git a/tests/test_utils_cpint.py b/tests/test_utils_cpint.py
new file mode 100644
index 00000000..29df1c22
--- /dev/null
+++ b/tests/test_utils_cpint.py
@@ -0,0 +1,80 @@
+import pytest
+import sys
+import os
+from colorama import Style
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+from slic.utils.cprint import *
+from slic.utils.cprint import _load_color_variants
+
+# Test _load_color_variants
+@pytest.mark.parametrize("base_color", [
+    "red", "blue", "yellow", "green", "cyan", "magenta", "white", "black"
+])
+def test_load_color_variants_all_keys_and_types(base_color):
+    variants = _load_color_variants(base_color)
+    expected_suffixes = ["--", "-", "", "+", "++"]
+    for suf in expected_suffixes:
+        key = base_color + suf
+        assert key in variants, f"Missing variant key: {key}"
+        ansi = variants[key]
+        assert isinstance(ansi, str) and ansi.startswith("\x1b"), f"Invalid ANSI code for {key}: {ansi}"
+    # Check that all values are unique
+    assert len(set(variants.values())) == len(variants)
+
+# Tprint and indirectly the intermediate functions
+@pytest.mark.parametrize(
+    "objects,color_spec,sep,expected_flatten,expected_error",
+    [
+        # ----- Valid color variants -----
+        ([["Fancy", "list"], {"a": 7}, None], ("red", "+"), " | ", "['Fancy', 'list'] | {'a': 7} | None", None),
+        ([{"k": [1,2]}, 99, ["X", ["Y"]]], ("blue", "++"), " - ","{'k': [1, 2]} - 99 - ['X', ['Y']]", None),
+        ([[], {}, "End"], ("magenta", "--"), " / ", "[] / {} / End", None),
+        ([["", [3,4]], "done", 0], ("green", ""), ";", "['', [3, 4]];done;0", None),
+        ([["alpha", None], ["beta", {}], "stop"], ("yellow", ""), "::", "['alpha', None]::['beta', {}]::stop", None),
+        ([["deep", ["deeper", ["deepest"]]], "X"], ("cyan", "+"), " ... ", "['deep', ['deeper', ['deepest']]] ... X", None),
+        ([{"dict": {"nested": [4,5]}}, [True, False], 6.28], ("white", "++"), " // ", "{'dict': {'nested': [4, 5]}} // [True, False] // 6.28", None),
+        ([["A", ["B"]], "string", "C"], ("red", "--"), "==", "['A', ['B']]==string==C", None),
+        ([["Test", None, []], {"v": 0}], ("green", "++"), " ++ ", "['Test', None, []] ++ {'v': 0}", None),
+        # ----- No color -----
+        ([["no", "color"], "plain"], None, ";", "['no', 'color'];plain", None),
+        ([["simple"], "", 12], None, " | ", "['simple'] |  | 12", None),
+        ([[["very", "deep"]], {"ok": True}], None, " : ", "[['very', 'deep']] : {'ok': True}", None),
+        # ----- Invalid colors-----
+        ([["fail", "color"], 123], ("green", "!!"), "|", "['fail', 'color']|123", ValueError),
+        ([["error"], {}], ("cyan", "xxx"), " * ", "['error'] * {}", ValueError),
+        ([["nope"], ["bad"]], ("magenta", "invalid"), "//", "['nope']//['bad']", ValueError),
+        (["wrong", "base"], ("notacolor", ""), "--", "wrong--base", ValueError),
+    ]
+)
+
+def test_cprint_all_cases_fancy(capsys, objects, color_spec, sep, expected_flatten, expected_error):
+    # Check if flatten_strings is correct
+    assert flatten_strings(objects, sep) == expected_flatten
+
+    # Build color key or None
+    if color_spec is None:
+        color_key = None
+    else:
+        color_key = color_spec[0] + color_spec[1]
+
+    # Test error if expected
+    if expected_error is not None:
+        with pytest.raises(expected_error):
+            cprint(*objects, color=color_key, sep=sep)
+        return
+
+    # Otherwise, check output as usual
+    if color_key is None:
+        # No color: output is just flatten, no color ANSI
+        cprint(*objects, color=None, sep=sep)
+        out = capsys.readouterr().out
+        assert out == expected_flatten + "\n"
+        assert "\x1b" not in out
+    else:
+        # Valid color: get code, check output
+        ansi_variants = _load_color_variants(color_spec[0])
+        ansi_code = ansi_variants[color_key]
+        expected = f"{ansi_code}{expected_flatten}{Style.RESET_ALL}\n"
+        cprint(*objects, color=color_key, sep=sep)
+        out = capsys.readouterr().out
+        assert expected in out