Do not copy whole directories for task tests (#2597)

* Filter copied resources

* normpath(base_dir)

* Single file case

* Tweaks

* Create resource files in local computer test

golem/task/localcomputer.py

@@ -133,11 +133,27 @@ def onerror(func, target_path, exc_info):
             shutil.rmtree(self.test_task_res_path, onerror=onerror)
 
         if resources:
-            if len(resources) == 1:
-                path = os.path.dirname(resources[0])
+            if len(resources) == 1 and os.path.isdir(resources[0]):
+                shutil.copytree(resources[0], self.test_task_res_path)
             else:
-                path = common_dir(resources)
-            shutil.copytree(path, self.test_task_res_path)
+                # no trailing separator
+                if len(resources) == 1:
+                    base_dir = os.path.dirname(resources[0])
+                else:
+                    base_dir = common_dir(resources)
+
+                base_dir = os.path.normpath(base_dir)
+
+                for resource in filter(None, resources):
+                    norm_path = os.path.normpath(resource)
+
+                    sub_path = norm_path.replace(base_dir + os.path.sep, '', 1)
+                    sub_dir = os.path.dirname(sub_path)
+                    dst_dir = os.path.join(self.test_task_res_path, sub_dir)
+                    os.makedirs(dst_dir, exist_ok=True)
+
+                    name = os.path.basename(resource)
+                    shutil.copy2(resource, os.path.join(dst_dir, name))
 
         for res in self.additional_resources:
             if not os.path.exists(self.test_task_res_path):

tests/golem/task/test_localcomputer.py

@@ -102,6 +102,9 @@ def reset_permissions(_path):
         resources = [os.path.join(resource_dir, 'file')]
 
         Path(existing_file).touch()
+        for resource in resources:
+            Path(resource).touch()
+
         remove_permissions(existing_file)
 
         lc._prepare_resources(resources)