chore: add a strict comparison

Author: Michael Brewer

aws_lambda_powertools/utilities/validation/exceptions.py

@@ -24,24 +24,28 @@ def __init__(
         message : str
             Powertools formatted error message
         validation_message : str, optional
-            Containing human-readable information what is wrong (e.g. ``data.property[index] must be smaller than or
-            equal to 42``)
+            Containing human-readable information what is wrong
+            (e.g. `data.property[index] must be smaller than or equal to 42`)
         name : str, optional
-            name of a path in the data structure (e.g. ``data.property[index]``)
+            name of a path in the data structure
+            (e.g. `data.property[index]`)
         path: List, optional
-            ``path`` as an array in the data structure (e.g. ``['data', 'property', 'index']``),
+            `path` as an array in the data structure
+            (e.g. `['data', 'property', 'index']`),
         value : Any, optional
-            the invalid value
+            The invalid value
         definition : Any, optional
-            The full rule ``definition`` (e.g. ``42``)
+            The full rule `definition`
+            (e.g. `42`)
         rule : str, optional
-            `rule`` which the ``data`` is breaking (e.g. ``maximum``)
+            `rule` which the `data` is breaking
+            (e.g. `maximum`)
         rule_definition : Any, optional
-            The full rule ``definition`` (e.g. ``42``)
+            The specific rule `definition`
+            (e.g. `42`)
         """
         super().__init__(message)
         self.message = message
-
         self.validation_message = validation_message
         self.name = name
         self.path = path

tests/functional/validator/test_validator.py

@@ -1,3 +1,5 @@
+import re
+
 import jmespath
 import pytest
 from jmespath import functions
@@ -22,8 +24,15 @@ def test_validate_base64_string_envelope(schema, wrapped_event_base64_json_strin
 
 
 def test_validate_event_does_not_conform_with_schema(schema):
-    with pytest.raises(exceptions.SchemaValidationError):
-        validate(event={"message": "hello_world"}, schema=schema)
+    data = {"message": "hello_world"}
+    with pytest.raises(
+        exceptions.SchemaValidationError,
+        match=re.escape(
+            "Failed schema validation. Error: data must contain ['message', 'username'] properties, "
+            f"Path: ['data'], Data: {data}"
+        ),
+    ):
+        validate(event=data, schema=schema)
 
 
 def test_validate_json_string_no_envelope(schema, wrapped_event_json_string):