diff --git a/test/detection/test_utils.py b/test/detection/test_utils.py
index d09348ff..899cb858 100644
--- a/test/detection/test_utils.py
+++ b/test/detection/test_utils.py
@@ -1035,7 +1035,12 @@ def test_merge_data(
 @pytest.mark.parametrize(
     "data, index, expected_result, exception",
     [
-        ({}, 0, {}, DoesNotRaise()),  # empty data dict
+        (
+            {},
+            0,
+            {},
+            DoesNotRaise()
+        ),  # empty data dict
         (
             {
                 "test_1": [1, 2, 3],
@@ -1045,7 +1050,7 @@ def test_merge_data(
                 "test_1": [1],
             },
             DoesNotRaise(),
-        ),  # single data dict with a single field name and list values
+        ),  # data dict with a single list field and integer index
         (
             {
                 "test_1": np.array([1, 2, 3]),
@@ -1055,7 +1060,7 @@ def test_merge_data(
                 "test_1": np.array([1]),
             },
             DoesNotRaise(),
-        ),  # single data dict with a single field name and np.array values as 1D arrays
+        ),  # data dict with a single np.array field and integer index
         (
             {
                 "test_1": [1, 2, 3],
@@ -1065,7 +1070,7 @@ def test_merge_data(
                 "test_1": [1, 2],
             },
             DoesNotRaise(),
-        ),  # single data dict with a single field name and list values
+        ),  # data dict with a single list field and slice index
         (
             {
                 "test_1": np.array([1, 2, 3]),
@@ -1075,7 +1080,7 @@ def test_merge_data(
                 "test_1": np.array([1, 2]),
             },
             DoesNotRaise(),
-        ),  # single data dict with a single field name and np.array values as 1D arrays
+        ),  # data dict with a single np.array field and slice index
         (
             {
                 "test_1": [1, 2, 3],
@@ -1085,7 +1090,7 @@ def test_merge_data(
                 "test_1": [3],
             },
             DoesNotRaise(),
-        ),  # single data dict with a single field name and list values
+        ),  # data dict with a single list field and negative integer index
         (
             {
                 "test_1": np.array([1, 2, 3]),
@@ -1095,7 +1100,7 @@ def test_merge_data(
                 "test_1": np.array([3]),
             },
             DoesNotRaise(),
-        ),  # single data dict with a single field name and np.array values as 1D arrays
+        ),  # data dict with a single np.array field and negative integer index
         (
             {
                 "test_1": [1, 2, 3],
@@ -1105,7 +1110,7 @@ def test_merge_data(
                 "test_1": [1, 3],
             },
             DoesNotRaise(),
-        ),  # single data dict with a single field name and list values
+        ),  # data dict with a single list field and integer list index
         (
             {
                 "test_1": np.array([1, 2, 3]),
@@ -1115,7 +1120,7 @@ def test_merge_data(
                 "test_1": np.array([1, 3]),
             },
             DoesNotRaise(),
-        ),  # single data dict with a single field name and np.array values as 1D arrays
+        ),  # data dict with a single np.array field and integer list index
         (
             {
                 "test_1": [1, 2, 3],
@@ -1125,7 +1130,7 @@ def test_merge_data(
                 "test_1": [1, 3],
             },
             DoesNotRaise(),
-        ),  # single data dict with a single field name and list values
+        ),  # data dict with a single list field and integer np.array index
         (
             {
                 "test_1": np.array([1, 2, 3]),
@@ -1135,7 +1140,73 @@ def test_merge_data(
                 "test_1": np.array([1, 3]),
             },
             DoesNotRaise(),
-        ),
+        ),  # data dict with a single np.array field and integer np.array index
+        (
+            {
+                "test_1": np.array([1, 2, 3]),
+            },
+            np.array([True, True, True]),
+            {
+                "test_1": np.array([1, 2, 3]),
+            },
+            DoesNotRaise(),
+        ),  # data dict with a single np.array field and all-true bool np.array index
+        (
+            {
+                "test_1": np.array([1, 2, 3]),
+            },
+            np.array([False, False, False]),
+            {
+                "test_1": np.array([]),
+            },
+            DoesNotRaise(),
+        ),  # data dict with a single np.array field and all-false bool np.array index
+        (
+            {
+                "test_1": np.array([1, 2, 3]),
+            },
+            np.array([False, True, False]),
+            {
+                "test_1": np.array([2]),
+            },
+            DoesNotRaise(),
+        ),  # data dict with a single np.array field and mixed bool np.array index
+        (
+            {
+                "test_1": np.array([1, 2, 3]),
+                "test_2": ['a', 'b', 'c']
+            },
+            0,
+            {
+                "test_1": np.array([1]),
+                "test_2": ['a']
+            },
+            DoesNotRaise(),
+        ),  # data dict with two fields and integer index
+        (
+            {
+                "test_1": np.array([1, 2, 3]),
+                "test_2": ['a', 'b', 'c']
+            },
+            -1,
+            {
+                "test_1": np.array([3]),
+                "test_2": ['c']
+            },
+            DoesNotRaise(),
+        ),  # data dict with two fields and negative integer index
+        (
+            {
+                "test_1": np.array([1, 2, 3]),
+                "test_2": ['a', 'b', 'c']
+            },
+            np.array([False, True, False]),
+            {
+                "test_1": np.array([2]),
+                "test_2": ['b']
+            },
+            DoesNotRaise(),
+        ),  # data dict with two fields and mixed bool np.array index
     ],
 )
 def test_get_data_item(