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How to use _resource_name_transformer method in localstack

Best Python code snippet using localstack_python

transformer_utility.py

Source:transformer_utility.py

...207        match = re.match(PATTERN_LOGSTREAM_ID, val)208        if match:209            return val210    return None211def _resource_name_transformer(key: str, val: str) -> str:212    if isinstance(val, str):213        match = re.match(PATTERN_ARN, val)214        if match:215            res = match.groups()[-1]216            if res.startswith("<") and res.endswith(">"):217                # value was already replaced218                return None219            if ":changeSet/" in val:220                return val.split(":changeSet/")[-1]221            if "/" in res:222                return res.split("/")[-1]223            if res.startswith("function:"):224                res = res.replace("function:", "")225                if "$" in res:...

test_snapshots.py

Source:test_snapshots.py

1import pytest2from localstack.testing.snapshots import SnapshotSession3from localstack.testing.snapshots.transformer import KeyValueBasedTransformer, SortingTransformer4from localstack.testing.snapshots.transformer_utility import _resource_name_transformer5class TestSnapshotManager:6    def test_simple_diff_nochange(self):7        sm = SnapshotSession(scope_key="A", verify=True, file_path="", update=False)8        sm.recorded_state = {"key_a": {"a": 3}}9        sm.match("key_a", {"a": 3})10        sm._assert_all()11    def test_simple_diff_change(self):12        sm = SnapshotSession(scope_key="A", verify=True, file_path="", update=False)13        sm.recorded_state = {"key_a": {"a": 3}}14        sm.match("key_a", {"a": 5})15        with pytest.raises(Exception) as ctx:16            sm._assert_all()17        ctx.match("Parity snapshot failed")18    def test_multiple_assertmatch_with_same_key_fail(self):19        sm = SnapshotSession(scope_key="A", verify=True, file_path="", update=False)20        sm.recorded_state = {"key_a": {"a": 3}}21        sm.match("key_a", {"a": 3})22        with pytest.raises(Exception) as ctx:23            sm.match("key_a", {"a": 3})24        ctx.match("used multiple times in the same test scope")25    def test_context_replacement(self):26        sm = SnapshotSession(scope_key="A", verify=True, file_path="", update=False)27        sm.add_transformer(28            KeyValueBasedTransformer(lambda k, v: v if k == "aaa" else None, replacement="A")29        )30        sm.recorded_state = {"key_a": {"aaa": "<A:1>", "bbb": "<A:1> hello"}}31        sm.match("key_a", {"aaa": "something", "bbb": "something hello"})32        sm._assert_all()33    def test_match_order_reference_replacement(self):34        """tests if the reference-replacement works as expected, e.g., using alphabetical order of keys"""35        sm = SnapshotSession(scope_key="A", verify=True, file_path="", update=False)36        sm.add_transformer(KeyValueBasedTransformer(_resource_name_transformer, "resource"))37        sm.recorded_state = {38            "subscription-attributes": {39                "Attributes": {40                    "ConfirmationWasAuthenticated": "true",41                    "Endpoint": "arn:aws:lambda:region:111111111111:function:<resource:1>",42                    "Owner": "111111111111",43                    "PendingConfirmation": "false",44                    "Protocol": "lambda",45                    "RawMessageDelivery": "false",46                    "RedrivePolicy": {47                        "deadLetterTargetArn": "arn:aws:sqs:region:111111111111:<resource:2>"48                    },49                    "SubscriptionArn": "arn:aws:sns:region:111111111111:<resource:4>:<resource:3>",50                    "TopicArn": "arn:aws:sns:region:111111111111:<resource:4>",51                },52                "ResponseMetadata": {"HTTPHeaders": {}, "HTTPStatusCode": 200},53            }54        }55        sm.match(56            "subscription-attributes",57            {58                "Attributes": {59                    "ConfirmationWasAuthenticated": "true",60                    "Owner": "111111111111",61                    "PendingConfirmation": "false",62                    "Protocol": "lambda",63                    "RawMessageDelivery": "false",64                    "RedrivePolicy": {65                        "deadLetterTargetArn": "arn:aws:sqs:region:111111111111:111112222233333"66                    },67                    "TopicArn": "arn:aws:sns:region:111111111111:rrrrrrrrrrrrrrrrr",68                    "SubscriptionArn": "arn:aws:sns:region:111111111111:rrrrrrrrrrrrrrrrr:azazazazazazazaza",69                    "Endpoint": "arn:aws:lambda:region:111111111111:function:aaaaabbbbb",70                },71                "ResponseMetadata": {"HTTPHeaders": {}, "HTTPStatusCode": 200},72            },73        )74        sm._assert_all()75    def test_replacement_key_value(self):76        sm = SnapshotSession(scope_key="A", verify=True, file_path="", update=False)77        sm.add_transformer(78            KeyValueBasedTransformer(79                # returns last two characters of value -> only this should be replaced80                lambda k, v: v[-2:] if k == "aaa" else None,81                replacement="A",82                replace_reference=False,83            )84        )85        sm.recorded_state = {86            "key_a": {"aaa": "hellA", "aab": "this is a test", "b": {"aaa": "another teA"}}87        }88        sm.match("key_a", {"aaa": "helloo", "aab": "this is a test", "b": {"aaa": "another test"}})89        sm._assert_all()90    def test_dot_in_skip_verification_path(self):91        sm = SnapshotSession(scope_key="A", verify=True, file_path="", update=False)92        sm.recorded_state = {93            "key_a": {"aaa": "hello", "aab": "this is a test", "b": {"a.aa": "another test"}}94        }95        sm.match(96            "key_a",97            {"aaa": "hello", "aab": "this is a test-fail", "b": {"a.aa": "another test-fail"}},98        )99        with pytest.raises(Exception) as ctx:  # asserts it fail without skipping100            sm._assert_all()101        ctx.match("Parity snapshot failed")102        skip_path = ["$..aab", "$..b.a.aa"]103        with pytest.raises(Exception) as ctx:  # asserts it fails if fields are not escaped104            sm._assert_all(skip_verification_paths=skip_path)105        ctx.match("Parity snapshot failed")106        skip_path_escaped = ["$..aab", "$..b.'a.aa'"]107        sm._assert_all(skip_verification_paths=skip_path_escaped)108def test_sorting_transformer():109    original_dict = {110        "a": {111            "b": [112                {"name": "c-123"},113                {"name": "a-123"},114                {"name": "b-123"},115            ]116        },117        "a2": {118            "b": [119                {"name": "b-123"},120                {"name": "a-123"},121                {"name": "c-123"},122            ]123        },124    }125    sorted_items = [126        {"name": "a-123"},127        {"name": "b-123"},128        {"name": "c-123"},129    ]130    transformer = SortingTransformer("b", lambda x: x["name"])131    transformed_dict = transformer.transform(original_dict)132    assert transformed_dict["a"]["b"] == sorted_items...

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