fix: create-project & create_component with proper file permission

tools/test_build_system/test_common.py

@@ -13,7 +13,7 @@
 
 import pytest
 from test_build_system_helpers import (EnvDict, IdfPyFunc, append_to_file, find_python, get_snapshot, replace_in_file,
-                                       run_idf_py)
+                                       run_idf_py, get_idf_build_env)
 
 
 def get_subdirs_absolute_paths(path: Path) -> List[str]:
@@ -237,6 +237,24 @@ def test_create_project(idf_py: IdfPyFunc, idf_copy: Path) -> None:
     assert ret.returncode == 4, 'Command create-project exit value is wrong.'
 
 
+def test_create_project_with_idf_readonly(idf_copy: Path) -> None:
+    logging.info('Check that command for creating new project will success if the IDF itself is readonly.')
+    def change_to_readonly(src):
+        for root, dirs, files in os.walk(src):
+            for name in dirs:
+                os.chmod(os.path.join(root, name), 0o555) # read & execute
+            for name in files:
+                path = os.path.join(root, name)
+                if '/bin/' in path: continue  # skip excutables
+                os.chmod(os.path.join(root, name), 0o444) # readonly
+    change_to_readonly(idf_copy)
+    ret = run_idf_py(
+        'create-project', '--path', str(idf_copy / 'example_proj'), 'temp_test_project', check=False,
+        env=get_idf_build_env(idf_copy)
+    )
+    assert ret.returncode == 0, 'Command create-project exit value is wrong.'
+
+
 @pytest.mark.usefixtures('test_app_copy')
 def test_docs_command(idf_py: IdfPyFunc) -> None:
     logging.info('Check docs command')