diff --git a/df_designer/logic.py b/df_designer/logic.py
index 59ff9442..f06d92ba 100644
--- a/df_designer/logic.py
+++ b/df_designer/logic.py
@@ -1,25 +1,22 @@
 import json
 import os
+from pathlib import Path
 from typing import Any
 
 import aiofiles
-from fastapi import Request
 from pydantic import Json
 
-from df_designer.settings import path_to_save
 
-
-async def save_data(request: Request):
+async def save_data(path: Path, data: dict[str, str]):
     """Save the json config."""
-    result = await request.json()
-    async with aiofiles.open(path_to_save, "w", encoding="utf-8") as file:
-        await file.write(json.dumps(result))
+    async with aiofiles.open(path, "w", encoding="utf-8") as file:
+        await file.write(json.dumps(data))
 
 
-async def get_data() -> Json[Any]:
+async def get_data(path: Path) -> Json[Any]:
     """Get the json config."""
-    if os.path.exists(path_to_save):
-        async with aiofiles.open(path_to_save, "r", encoding="utf-8") as file:
+    if os.path.exists(path):
+        async with aiofiles.open(path, "r", encoding="utf-8") as file:
             return json.loads(await file.read())
     else:
         return {}
diff --git a/df_designer/main.py b/df_designer/main.py
index eac031e9..db77f596 100644
--- a/df_designer/main.py
+++ b/df_designer/main.py
@@ -4,6 +4,7 @@
 from fastapi.staticfiles import StaticFiles
 
 from df_designer.logic import get_data, save_data
+from df_designer.settings import path_to_save
 
 app = FastAPI()
 app.mount("/static", StaticFiles(directory="static"), name="static")
@@ -29,15 +30,16 @@ async def alive() -> dict[str, str]:
 @app.post("/save")
 async def save(request: Request):
     """Save data."""
-    await save_data(request)
+    data = await request.json()
+    await save_data(path=path_to_save, data=data)
     return {"status": "ok"}
 
 
 @app.get("/get")
 async def get():
     """Get data."""
-    result = await get_data()
-    return result
+    result = await get_data(path_to_save)
+    return {"status": "ok", "data": result}
 
 
 ################################################################
@@ -45,39 +47,39 @@ async def get():
 ################################################################
 
 
-# /projects
-@app.get("/projects")
-async def projects_get() -> dict[str, str]:
-    """(get projects from db) - returns JSON of all saved projects"""
+# /flows
+@app.get("/flows")
+async def flows_get() -> dict[str, str]:
+    """(get flows from db) - returns JSON of all saved flows"""
     return {"status": "ok"}
 
 
-@app.post("/projects")
-async def projects_post() -> dict[str, str]:
-    """(add new project) - receives JSON of new project"""
+@app.post("/flows")
+async def flows_post() -> dict[str, str]:
+    """(add new flows) - receives JSON of new flows"""
     return {"status": "ok"}
 
 
-@app.patch("/projects")
-async def projects_patch() -> dict[str, str]:
-    """(edit all projects list) - receives JSON of edited projects"""
+@app.patch("/flows")
+async def flows_patch() -> dict[str, str]:
+    """(edit all flows list) - receives JSON of edited flows"""
     return {"status": "ok"}
 
 
-@app.delete("/projects")
-async def projects_delete() -> dict[str, str]:
-    """@delete (delete project) - receives projectID by query param"""
+@app.delete("/flows")
+async def flows_delete() -> dict[str, str]:
+    """@delete (delete flows) - receives flowsID by query param"""
     return {"status": "ok"}
 
 
-@app.post("/projects/upload")
-async def projects_upload_post() -> dict[str, str]:
+@app.post("/flows/upload")
+async def flows_upload_post() -> dict[str, str]:
     """upload"""
     return {"status": "ok"}
 
 
-@app.get("/projects/download")
-async def projects_download_get() -> dict[str, str]:
+@app.get("/flows/download")
+async def flows_download_get() -> dict[str, str]:
     """upload"""
     return {"status": "ok"}
 
@@ -89,6 +91,8 @@ async def service_health_get() -> dict[str, str]:
     return {"status": "ok"}
 
 
+# TODO: rename meta :do
+# TODO: команды для Максима
 @app.get("/service/version")
 async def service_version_get() -> dict[str, str]:
     """(get dff curr version)"""
diff --git a/df_designer/settings.py b/df_designer/settings.py
index 0b15923f..d880bdb1 100644
--- a/df_designer/settings.py
+++ b/df_designer/settings.py
@@ -9,4 +9,4 @@
 
 
 # app settings
-path_to_save = Path().home().joinpath("data.json")
+path_to_save = Path().home().joinpath("flows.json")
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 00000000..edf1916d
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,15 @@
+from pathlib import Path
+
+import pytest
+
+# @pytest.fixture(scope="session", autouse=True)
+# def test_folder():
+#     """create a folder"""
+#     print("]---starting test---[")
+#     yield
+#     print("]---ending test---[")
+
+
+@pytest.fixture
+def test_file_path():
+    return Path("/tmp").joinpath("test.json")
diff --git a/tests/test_logic.py b/tests/test_logic.py
new file mode 100644
index 00000000..13eea200
--- /dev/null
+++ b/tests/test_logic.py
@@ -0,0 +1,35 @@
+import json
+from pathlib import Path
+
+import aiofiles
+import pytest
+
+from df_designer.logic import get_data, save_data
+
+
+@pytest.mark.asyncio
+async def test_logic_save_data(test_file_path: Path):
+    """Test save json."""
+    await save_data(test_file_path, data={"status": "ok"})
+
+    async with aiofiles.open(test_file_path, "r", encoding="utf-8") as file:
+        assert json.loads(await file.read()) == {"status": "ok"}
+
+    Path(test_file_path).unlink()
+
+
+@pytest.mark.asyncio
+async def test_logic_get_data(test_file_path: Path):
+    """Test read json."""
+    async with aiofiles.open(test_file_path, "w", encoding="utf-8") as file:
+        await file.write(json.dumps({"status": "ok"}))
+
+    assert await get_data(test_file_path) == {"status": "ok"}
+
+    Path(test_file_path).unlink()
+
+
+@pytest.mark.asyncio
+async def test_logic_get_data_empty(test_file_path: Path):
+    """Test return if no file."""
+    assert await get_data(test_file_path) == {}
diff --git a/tests/test_main.py b/tests/test_main.py
index e5298146..7f37c8fb 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -31,33 +31,68 @@ def test_main_get():
     # assert response.json() == {"status": "true"} # make mock request
 
 
-def test_projects_get():
-    response = client.get("/projects")
+def test_flows_get():
+    response = client.get("/flows")
     assert response.status_code == 200
 
 
-def test_projects_post():
-    response = client.post("/projects")
+def test_flows_post():
+    response = client.post("/flows")
     assert response.status_code == 200
 
 
-def test_projects_patch():
-    response = client.patch("/projects")
+def test_flows_patch():
+    response = client.patch("/flows")
     assert response.status_code == 200
 
 
-def test_projects_delete():
-    response = client.delete("/projects")
+def test_flows_delete():
+    response = client.delete("/flows")
     assert response.status_code == 200
 
 
-def test_projects_upload_post():
-    response = client.post("/projects/upload")
+def test_flows_upload_post():
+    response = client.post("/flows/upload")
     assert response.status_code == 200
 
 
-def test_projects_download_get():
-    response = client.get("/projects/download")
+def test_flows_download_get():
+    response = client.get("/flows/download")
+    assert response.status_code == 200
+
+
+def test_service_health_get():
+    response = client.get("/service/health")
+    assert response.status_code == 200
+
+
+def test_service_version_get():
+    response = client.get("/service/version")
+    assert response.status_code == 200
+
+
+def test_library_functions_get():
+    response = client.get("/library/functions")
+    assert response.status_code == 200
+
+
+def test_library_llms_get():
+    response = client.get("/library/llms")
+    assert response.status_code == 200
+
+
+def test_dff_tests_prompt_get():
+    response = client.post("/dff/tests/prompt")
+    assert response.status_code == 200
+
+
+def test_dff_tests_condition_get():
+    response = client.post("/dff/tests/condition")
+    assert response.status_code == 200
+
+
+def test_build_get():
+    response = client.post("/build")
     assert response.status_code == 200
 
 
@@ -67,4 +102,4 @@ def test_settings():
     assert settings.port == 8000
     assert settings.log_level == "info"
     assert settings.reload is True
-    assert settings.path_to_save == Path().home().joinpath("data.json")
+    assert settings.path_to_save == Path().home().joinpath("flows.json")