diff --git a/lib/tfw/components/ide_event_handler/test_filemanager.py b/lib/tfw/components/ide_event_handler/test_file_manager.py
similarity index 74%
rename from lib/tfw/components/ide_event_handler/test_filemanager.py
rename to lib/tfw/components/ide_event_handler/test_file_manager.py
index c6e0b8b..33c8024 100644
--- a/lib/tfw/components/ide_event_handler/test_filemanager.py
+++ b/lib/tfw/components/ide_event_handler/test_file_manager.py
@@ -1,5 +1,6 @@
 # pylint: disable=redefined-outer-name
 
+from dataclasses import dataclass
 from secrets import token_urlsafe
 from os.path import join
 from os import chdir, mkdir, symlink
@@ -10,11 +11,10 @@ import pytest
 
 from file_manager import FileManager
 
-
+@dataclass
 class ManagerContext:
-    def __init__(self, folder, manager):
-        self.folder = folder
-        self.manager = manager
+    folder: str
+    manager: FileManager
 
     def join(self, path):
         return join(self.folder, path)
@@ -22,20 +22,24 @@ class ManagerContext:
 
 @pytest.fixture()
 def context():
-    dirs = []
+    dirs = {}
 
     with TemporaryDirectory() as workdir:
         chdir(workdir)
-        for name in ["allowed", "excluded", "invis"]:
+        for name in ['allowed', 'excluded', 'invis']:
             node = join(workdir, name)
             mkdir(node)
             Path(join(node, 'empty.txt')).touch()
             Path(join(node, 'empty.bin')).touch()
-            dirs.append(node)
+            dirs[name] = node
 
         yield ManagerContext(
             workdir,
-            FileManager(dirs[0], dirs[:-1], exclude=['*/excluded/*'])
+            FileManager(
+                dirs['allowed'],
+                [dirs['allowed'], dirs['excluded']],
+                exclude=['*/excluded/*']
+            )
         )
 
 @pytest.mark.parametrize('subdir', ['allowed/', 'excluded/'])
@@ -99,5 +103,22 @@ def test_read_write_file(context):
         content = token_urlsafe(32)
         context.manager.file_contents = content
         assert context.manager.file_contents == content
-        with open(context.join('allowed/empty.txt'), "r") as ifile:
+        with open(context.join('allowed/empty.txt'), 'r') as ifile:
             assert ifile.read() == content
+
+def test_regular_ide_actions(context):
+    context.manager.workdir = context.join('allowed')
+    newfile1, newfile2 = token_urlsafe(16), token_urlsafe(16)
+    Path(context.join(f'allowed/{newfile1}')).touch()
+    Path(context.join(f'allowed/{newfile2}')).touch()
+    for _ in range(8):
+        context.manager.filename = newfile1
+        content1 = token_urlsafe(32)
+        context.manager.file_contents = content1
+        context.manager.filename = newfile2
+        content2 = token_urlsafe(32)
+        context.manager.file_contents = content2
+        context.manager.filename = newfile1
+        assert context.manager.file_contents == content1
+        context.manager.filename = newfile2
+        assert context.manager.file_contents == content2