1 files changed, 57 insertions, 0 deletions
diff --git a/tests/units/tools/test_utils.py b/tests/units/tools/test_utils.py
new file mode 100644
index 0000000..448324f
--- /dev/null
+++ b/tests/units/tools/test_utils.py
@@ -0,0 +1,57 @@
+# Copyright (c) 2023-2024 Arista Networks, Inc.
+# Use of this source code is governed by the Apache License 2.0
+# that can be found in the LICENSE file.
+
+"""Tests for `anta.tools.utils`."""
+from __future__ import annotations
+
+from contextlib import nullcontext as does_not_raise
+from typing import Any
+
+import pytest
+
+from anta.tools.utils import get_failed_logs
+
+EXPECTED_OUTPUTS = [
+    {"id": 1, "name": "Alice", "age": 30, "email": "alice@example.com"},
+    {"id": 2, "name": "Bob", "age": 35, "email": "bob@example.com"},
+    {"id": 3, "name": "Charlie", "age": 40, "email": "charlie@example.com"},
+    {"id": 4, "name": "Jon", "age": 25, "email": "Jon@example.com"},
+]
+
+ACTUAL_OUTPUTS = [
+    {"id": 1, "name": "Alice", "age": 30, "email": "alice@example.com"},
+    {"id": 2, "name": "Bob", "age": 35, "email": "bob@example.com"},
+    {"id": 3, "name": "Charlie", "age": 40, "email": "charlie@example.com"},
+    {"id": 4, "name": "Rob", "age": 25, "email": "Jon@example.com"},
+]
+
+
+@pytest.mark.parametrize(
+    "expected_output, actual_output, expected_result, expected_raise",
+    [
+        pytest.param(EXPECTED_OUTPUTS[0], ACTUAL_OUTPUTS[0], "", does_not_raise(), id="no difference"),
+        pytest.param(
+            EXPECTED_OUTPUTS[0],
+            ACTUAL_OUTPUTS[1],
+            "\nExpected `1` as the id, but found `2` instead.\nExpected `Alice` as the name, but found `Bob` instead.\n"
+            "Expected `30` as the age, but found `35` instead.\nExpected `alice@example.com` as the email, but found `bob@example.com` instead.",
+            does_not_raise(),
+            id="different data",
+        ),
+        pytest.param(
+            EXPECTED_OUTPUTS[0],
+            {},
+            "\nExpected `1` as the id, but it was not found in the actual output.\nExpected `Alice` as the name, but it was not found in the actual output.\n"
+            "Expected `30` as the age, but it was not found in the actual output.\nExpected `alice@example.com` as the email, but it was not found in "
+            "the actual output.",
+            does_not_raise(),
+            id="empty actual output",
+        ),
+        pytest.param(EXPECTED_OUTPUTS[3], ACTUAL_OUTPUTS[3], "\nExpected `Jon` as the name, but found `Rob` instead.", does_not_raise(), id="different name"),
+    ],
+)
+def test_get_failed_logs(expected_output: dict[Any, Any], actual_output: dict[Any, Any], expected_result: str, expected_raise: Any) -> None:
+    """Test get_failed_logs."""
+    with expected_raise:
+        assert get_failed_logs(expected_output, actual_output) == expected_result