Feat: add flux in dataplatform

tests/dataplatform/test_dataplateform.py

@@ -4,6 +4,8 @@ from pathlib import Path
 import pytest
 
 from plesna.dataplatform import DataPlateform
+from plesna.models.flux import Flux
+from plesna.models.transformation import Transformation
 from plesna.storage.repository.fs_repository import FSRepository
 
 FIXTURE_DIR = Path(__file__).parent.parent / Path("raw_datas")
@@ -69,6 +71,29 @@ def test_listing_content(dataplatform: DataPlateform):
     ]
 
 
-def test_add_flux(dataplatform: DataPlateform):
-    # dataplatform.add_flux()
-    pass
+@pytest.fixture
+def copy_flux(repository: FSRepository) -> Flux:
+    src = {"username": repository.table("raw", "username")}
+    targets = {"username": repository.table("bronze", "username")}
+
+    def copy(sources, targets):
+        pass
+
+    extra_kwrds = {}
+
+    flux = Flux(
+        sources=src,
+        targets=targets,
+        transformation=Transformation(function=copy, extra_kwrds=extra_kwrds),
+    )
+    return flux
+
+
+def test_add_flux(dataplatform: DataPlateform, copy_flux: Flux):
+    dataplatform.add_flux(name="copy_flux", flux=copy_flux)
+    assert dataplatform.fluxes == ["copy_flux"]
+    dataplatform.add_flux(name="copy_flux_bis", flux=copy_flux)
+    assert dataplatform.fluxes == ["copy_flux", "copy_flux_bis"]
+
+    assert dataplatform.flux("copy_flux") == copy_flux
+    assert dataplatform.flux("copy_flux_bis") == copy_flux