diff --git a/tests/test_ComputedObect.py b/tests/test_ComputedObect.py
index ef177677..faab7fc8 100644
--- a/tests/test_ComputedObect.py
+++ b/tests/test_ComputedObect.py
@@ -89,6 +89,10 @@ def test_open(self, tmp_path):
         opened = ee.Number.open(file)
         assert object.eq(opened).getInfo()
 
+    def test_open_not_correct_suffix(self):
+        with pytest.raises(ValueError):
+            ee.Number.open("file.toto")
+
     def test_deprecated_method(self, tmp_path):
         (object := ee.Number(1.1)).save((file := tmp_path / "test.gee"))
         with pytest.deprecated_call():
diff --git a/tests/test_DateRange.py b/tests/test_DateRange.py
index e8db3917..bbe6db77 100644
--- a/tests/test_DateRange.py
+++ b/tests/test_DateRange.py
@@ -43,3 +43,11 @@ def test_deprecated_alertnate_method(self, daterange_instance):
             assert list.size().getInfo() == 30
             assert first.format("YYYY-MM-dd").getInfo() == "2020-01-01"
             assert last.format("YYYY-MM-dd").getInfo() == "2020-01-31"
+
+
+class TestCheckUnit:
+    """Test the ``check_unit`` method exception."""
+
+    def test_check_unit(self):
+        with pytest.raises(ValueError):
+            ee.DateRange.geetools.check_unit("toto")
diff --git a/tests/test_Image/test_default_spectral_indices.yml b/tests/test_Image/test_default_spectral_indices.yml
index f6e27a59..6a718e17 100644
--- a/tests/test_Image/test_default_spectral_indices.yml
+++ b/tests/test_Image/test_default_spectral_indices.yml
@@ -208,7 +208,7 @@ WI2: -0.3508100169371153
 WI2015: -108966.54196450702
 WRI: 0.39238655381190113
 WVP: 681.9462692210739
-kEVI: 0.754691564374628
+kEVI: 0.7546915643746379
 kIPVI: 0.6366978189206153
 kNDVI: 0.27339563784123116
 kRVI: 2.04969719717336
diff --git a/tests/test_deprecated.py b/tests/test_deprecated.py
index 4038ef28..26e9cbc3 100644
--- a/tests/test_deprecated.py
+++ b/tests/test_deprecated.py
@@ -1,5 +1,7 @@
 """Test all the deprecated methods that have not been kept in the new implementation."""
 
+from datetime import datetime
+
 import pytest
 
 import geetools
@@ -17,6 +19,15 @@ def test_stretch_percentile(self):
             geetools.visualization.stretch_percentile(None, None)
 
 
+class TestDate:
+    """Test methods from the deprecated_date module."""
+
+    def test_millis_to_datetime(self):
+        with pytest.deprecated_call():
+            date = geetools.date.millisToDatetime(1527811200000)
+            assert date == datetime.strptime("2018-06-01", "%Y-%m-%d")
+
+
 class TestCollection:
     """Test methods from the deprecated_collection module."""