Add test signal/image loading functions in PluginTestData

Author: PierreRaybaut

datalab/locale/fr/LC_MESSAGES/datalab.po

@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version:  datalab\n"
 "Report-Msgid-Bugs-To: p.raybaut@codra.fr\n"
-"POT-Creation-Date: 2025-10-15 18:23+0200\n"
+"POT-Creation-Date: 2025-10-15 18:34+0200\n"
 "PO-Revision-Date: 2025-05-22 15:46+0200\n"
 "Last-Translator: Christophe Debonnel <c.debonnel@codra.fr>\n"
 "Language: fr\n"
@@ -2234,6 +2234,9 @@ msgstr "Grille d'images gaussiennes"
 msgid "Load spectrum of paracetamol"
 msgstr "Charger le spectre du paracétamol"
 
+msgid "Load all test signals"
+msgstr "Charger tous les signaux de test"
+
 msgid "Create image with peaks"
 msgstr "Créer une image avec des pics"
 
@@ -2258,6 +2261,9 @@ msgstr "Créer une image avec un anneau"
 msgid "Create image with a grid of gaussian spots"
 msgstr "Créer une image avec une grille de spots gaussiens"
 
+msgid "Load all test images"
+msgstr "Charger toutes les images de test"
+
 msgid "Host application"
 msgstr "Application hôte"
 

datalab/plugins/datalab_testdata.py

@@ -8,10 +8,16 @@
 and some actions to test DataLab functionalities.
 """
 
+from __future__ import annotations
+
 import sigima.tests.data as test_data
+from sigima.io.image import ImageIORegistry
+from sigima.io.signal import SignalIORegistry
+from sigima.tests import helpers
 
 from datalab.config import _
 from datalab.plugins import PluginBase, PluginInfo
+from datalab.utils.qthelpers import create_progress_bar
 
 # ------------------------------------------------------------------------------
 # All computation functions must be defined as global functions, otherwise
@@ -28,6 +34,27 @@ class PluginTestData(PluginBase):
         description=_("Testing DataLab functionalities"),
     )
 
+    def load_test_objs(
+        self, registry_class: type[SignalIORegistry | ImageIORegistry], title: str
+    ) -> None:
+        """Load all test objects from a given registry class
+
+        Args:
+            registry_class: Registry class (SignalIORegistry or ImageIORegistry)
+            title: Progress bar title
+
+        Returns:
+            List of (filename, object) tuples
+        """
+        test_objs = list(helpers.read_test_objects(registry_class))
+        with create_progress_bar(self.signalpanel, title, max_=len(test_objs)) as prog:
+            for i_obj, (_fname, obj) in enumerate(test_objs):
+                prog.setValue(i_obj + 1)
+                if prog.wasCanceled():
+                    break
+                if obj is not None:
+                    self.proxy.add_object(obj)
+
     # Signal processing features ------------------------------------------------
     def create_paracetamol_signal(self) -> None:
         """Create paracetamol signal"""
@@ -102,6 +129,12 @@ def create_actions(self) -> None:
                 _("Load spectrum of paracetamol"),
                 triggered=self.create_paracetamol_signal,
                 select_condition="always",
+            )
+            sah.new_action(
+                _("Load all test signals"),
+                triggered=lambda regclass=SignalIORegistry,
+                title=_("Load all test signals"): self.load_test_objs(regclass, title),
+                select_condition="always",
                 separator=True,
             )
         # Image Panel -----------------------------------------------------------
@@ -148,3 +181,10 @@ def create_actions(self) -> None:
                 triggered=self.create_grid_gaussian_image,
                 select_condition="always",
             )
+            iah.new_action(
+                _("Load all test images"),
+                triggered=lambda regclass=ImageIORegistry,
+                title=_("Load all test images"): self.load_test_objs(regclass, title),
+                select_condition="always",
+                separator=True,
+            )