diff --git a/ii_constructor/apps/qteditor/__main__.py b/ii_constructor/apps/qteditor/__main__.py
index 730f8d9..bbec89a 100644
--- a/ii_constructor/apps/qteditor/__main__.py
+++ b/ii_constructor/apps/qteditor/__main__.py
@@ -21,15 +21,17 @@
 
 import sys
 
+import resources.icons_rc  # noqa: F401 Для вызова функции инициализации иконок
+import resources.styles_rc
 from presentation import ProjectManager
 from PySide6.QtCore import QFile, QIODevice, QTextStream
 from PySide6.QtWidgets import QApplication
 
-import resources.styles_rc
-import resources.icons_rc  # noqa: F401 Для вызова функции инициализации иконок
-
 if __name__ == "__main__":
-    sys.argv += ["-platform", "windows:darkmode=0"]
+    if sys.platform == "windows":
+        sys.argv += ["-platform", "windows:darkmode=0"]
+    elif sys.platform == "darwin":
+        sys.argv += ["-platform", "cocoa:darkmode=0"]
 
     app = QApplication(sys.argv)
     app.setOrganizationName("ii_constructor")
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..5e2aaf4
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,20 @@
+import pytest
+from iiconstructor_core.domain.primitives import (
+    Description,
+    Name,
+    ScenarioID,
+    SourceInfo,
+)
+from iiconstructor_inmemory.repo import SourceInMemory
+
+
+@pytest.fixture()
+def get_source() -> SourceInMemory:
+    scenario_id = ScenarioID(1)
+Í
+    name = Name("123")
+    description = Description("qwe")
+
+    source_info = SourceInfo(name, description)
+
+    return SourceInMemory(scenario_id, source_info)
diff --git a/tests/ii_constructor/packages/inmemoryrepo/iiconstructor_inmemory/test_inmemory_repo.py b/tests/ii_constructor/packages/inmemoryrepo/iiconstructor_inmemory/test_inmemory_repo.py
new file mode 100644
index 0000000..871fc8c
--- /dev/null
+++ b/tests/ii_constructor/packages/inmemoryrepo/iiconstructor_inmemory/test_inmemory_repo.py
@@ -0,0 +1,37 @@
+from iiconstructor_core.domain import InputDescription
+from iiconstructor_core.domain.primitives import Name
+from iiconstructor_inmemory.repo import SourceInMemory
+
+
+def test_add_vector(get_source: SourceInMemory) -> None:
+    name = Name("123")
+    desc = InputDescription(name=name)
+
+    get_source.add_vector(desc)
+    assert get_source.check_vector_exists(name) is True
+    vector = get_source.get_vector(name)
+    assert vector == desc
+
+
+def test_remove_vector(get_source: SourceInMemory) -> None:
+    name = Name("123")
+    desc = InputDescription(name=name)
+
+    get_source.add_vector(desc)
+    assert get_source.check_vector_exists(name) is True
+    get_source.remove_vector(name)
+    assert get_source.check_vector_exists(name) is False
+
+
+def test_select_vectors(get_source: SourceInMemory) -> None:
+    name = Name("123")
+    desc = InputDescription(name=name)
+
+    name2 = Name("1233")
+    desc2 = InputDescription(name=name2)
+
+    get_source.add_vector(desc)
+    get_source.add_vector(desc2)
+
+    list_vectors = get_source.select_vectors([name, name2])
+    assert len(list_vectors) == 3