fix: add constant str for enums to support deepcopy operation (aws#5265)

* fix: add constant str for enums to support deepcopy operation

* add unit tests

* formatting

samcli/lib/providers/provider.py

@@ -7,7 +7,7 @@
 import os
 import posixpath
 from collections import namedtuple
-from enum import Enum, auto
+from enum import Enum
 from typing import TYPE_CHECKING, Any, Dict, Iterator, List, NamedTuple, Optional, Set, Union, cast
 
 from samcli.commands.local.cli_common.user_exceptions import (
@@ -43,13 +43,16 @@ class FunctionBuildInfo(Enum):
     """
 
     # buildable
-    BuildableZip = auto(), "Regular ZIP function which can be build with SAM CLI"
-    BuildableImage = auto(), "Regular IMAGE function which can be build with SAM CLI"
+    BuildableZip = "BuildableZip", "Regular ZIP function which can be build with SAM CLI"
+    BuildableImage = "BuildableImage", "Regular IMAGE function which can be build with SAM CLI"
     # non-buildable
-    InlineCode = auto(), "A ZIP function which has inline code, non buildable"
-    PreZipped = auto(), "A ZIP function which points to a .zip file, non buildable"
-    SkipBuild = auto(), "A Function which is denoted with SkipBuild in metadata, non buildable"
-    NonBuildableImage = auto(), "An IMAGE function which is missing some information to build, non buildable"
+    InlineCode = "InlineCode", "A ZIP function which has inline code, non buildable"
+    PreZipped = "PreZipped", "A ZIP function which points to a .zip file, non buildable"
+    SkipBuild = "SkipBuild", "A Function which is denoted with SkipBuild in metadata, non buildable"
+    NonBuildableImage = (
+        "NonBuildableImage",
+        "An IMAGE function which is missing some information to build, non buildable",
+    )
 
     def is_buildable(self) -> bool:
         """

tests/unit/lib/build_module/test_build_graph.py

@@ -1,3 +1,4 @@
+import copy
 import os.path
 from unittest import TestCase
 from unittest.mock import patch, Mock
@@ -961,3 +962,17 @@ def test_build_folder_with_multiple_functions(self, build_improvements_22_enable
                 build_definition.get_build_dir("build_dir"),
                 build_definition.functions[0].get_build_dir("build_dir") + "-Shared",
             )
+
+    def test_deepcopy_build_definition(self):
+        build_definition = FunctionBuildDefinition(
+            "runtime", "codeuri", ZIP, ARM64, {}, "handler", "source_hash", "manifest_hash"
+        )
+        function1 = generate_function(runtime="runtime", codeuri="codeuri", handler="handler")
+        function2 = generate_function(runtime="runtime", codeuri="codeuri", handler="handler")
+        build_definition.add_function(function1)
+        build_definition.add_function(function2)
+        build_definitions = [build_definition]
+
+        copied_build_definitions = copy.deepcopy(build_definitions)
+
+        self.assertEqual(copied_build_definitions, build_definitions)