Add some tests for FourierFT conv2d layers

Author: frutiemax92

tests/test_custom_models.py

@@ -663,6 +663,27 @@
             "init_weights": True,
         },
     ),
+    (
+        "Conv2d 1 FourierFT", 
+        "Conv2d", 
+        FourierFTConfig,
+        {
+            "target_modules": ["conv2d"],
+            "n_frequency": 1000,
+        }
+    ), 
+    (
+        "Conv2d 2 FourierFT", 
+        "Conv2d", 
+        FourierFTConfig, 
+        {
+            "target_modules": ["conv2d", "lin0"],
+            "alpha" : 0.01,
+            "init_weights": True,
+            "ifft2_norm": "ortho",
+        }
+    ), 
+    
     ##########
     # VBLoRA #
     ##########