Make snippet updater tests re-entrant (#42632)

* update the python snippet updater tests so that they are re-entrant without accidentally changing files that could get commmitted
* fix the tools tests

Author: scbedd

eng/tools/azure-sdk-tools/tests/README.md renamed to eng/tools/azure-sdk-tools/tests/integration/scenarios/snippet-updater/README.md

@@ -4,7 +4,7 @@
 from ci_tools.functions import discover_targeted_packages
 
 
-repo_root = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..", "..", ".."))
+repo_root = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..", "..", "..", ".."))
 core_service_root = os.path.join(repo_root, "sdk", "core")
 storage_service_root = os.path.join(repo_root, "sdk", "storage")
 

eng/tools/azure-sdk-tools/tests/README_missing_snippet.md renamed to eng/tools/azure-sdk-tools/tests/integration/scenarios/snippet-updater/README_missing_snippet.md

@@ -1,15 +1,32 @@
 import os
 import pytest
+import shutil
+from tempfile import mkdtemp
+
 from ci_tools.snippet_update.python_snippet_updater import (
     get_snippet,
     update_snippet,
     check_snippets,
     check_not_up_to_date,
 )
 
+scenario = os.path.join(os.path.dirname(__file__), "integration", "scenarios", "snippet-updater")
+
+def create_temp_directory_from_template(input_directory: str) -> str:
+    """
+    Create a temporary directory from a template directory.
+    Args:
+        input_directory (str): The path to the input directory to copy.
+    Returns:
+        str: The path to the newly created temporary directory.
+    """
+    temp_dir = mkdtemp()
+    shutil.copytree(input_directory, temp_dir, dirs_exist_ok=True)
+    return temp_dir
+
 
 def test_get_snippet():
-    folder = os.path.dirname(os.path.abspath(__file__))
+    folder = scenario
     file = os.path.join(folder, "example_async.py")
     get_snippet(file)
     snippets = check_snippets().keys()
@@ -19,15 +36,15 @@ def test_get_snippet():
 
 
 def test_update_snippet():
-    folder = os.path.dirname(os.path.abspath(__file__))
+    folder = create_temp_directory_from_template(scenario)
     file = os.path.join(folder, "example_async.py")
     get_snippet(file)
     file_1 = os.path.join(folder, "README.md")
     update_snippet(file_1)
 
 
 def test_missing_snippet():
-    folder = os.path.dirname(os.path.abspath(__file__))
+    folder = create_temp_directory_from_template(scenario)
     file = os.path.join(folder, "example_async.py")
     get_snippet(file)
     file_1 = os.path.join(folder, "README_missing_snippet.md")
@@ -36,7 +53,7 @@ def test_missing_snippet():
 
 
 def test_out_of_sync():
-    folder = os.path.dirname(os.path.abspath(__file__))
+    folder = create_temp_directory_from_template(scenario)
     file = os.path.join(folder, "example_async.py")
     get_snippet(file)
     file_1 = os.path.join(folder, "README_out_of_sync.md")

eng/tools/azure-sdk-tools/tests/README_out_of_sync.md renamed to eng/tools/azure-sdk-tools/tests/integration/scenarios/snippet-updater/README_out_of_sync.md

@@ -67,7 +67,7 @@ def test_replace_dev_reqs_relative(tmp_directory_create):
     ).version
     identity_version = ParsedSetup.from_path(os.path.join(repo_root, "sdk", "identity", "azure-identity")).version
     mgmt_core_version = ParsedSetup.from_path(os.path.join(repo_root, "sdk", "core", "azure-mgmt-core")).version
-    sdk_tools_version = ParsedSetup.from_path(os.path.join(repo_root, "tools", "azure-sdk-tools")).version
+    sdk_tools_version = ParsedSetup.from_path(os.path.join(repo_root, "eng", "tools", "azure-sdk-tools")).version
     core_version = ParsedSetup.from_path(os.path.join(repo_root, "sdk", "core", "azure-core")).version
     keyvault_version = ParsedSetup.from_path(os.path.join(repo_root, "sdk", "keyvault", "azure-keyvault-keys")).version