Added unittests

modules/async_worker.py

@@ -52,6 +52,8 @@ def worker():
     )
     from modules.upscaler import perform_upscale
 
+    MAX_LORAS = 5
+
     try:
         async_gradio_app = shared.gradio_root
         flag = f'''App started successful. Use the app with {str(async_gradio_app.local_url)} or {str(async_gradio_app.server_name)}:{str(async_gradio_app.server_port)}'''
@@ -140,7 +142,7 @@ def worker():
         base_model_name = args.pop()
         refiner_model_name = args.pop()
         refiner_switch = args.pop()
-        loras = [[str(args.pop()), float(args.pop())] for _ in range(5)]
+        loras = [[str(args.pop()), float(args.pop())] for _ in range(MAX_LORAS)]
         input_image_checkbox = args.pop()
         current_tab = args.pop()
         uov_method = args.pop()
@@ -381,7 +383,7 @@ def worker():
             progressbar(async_task, 3, 'Loading models ...')
 
             # Parse lora references from prompt
-            loras = parse_lora_references_from_prompt(prompt, loras)
+            loras = parse_lora_references_from_prompt(prompt, loras, loras_limit=MAX_LORAS)
 
             pipeline.refresh_everything(refiner_model_name=refiner_model_name, base_model_name=base_model_name,
                                         loras=loras, base_model_additional_loras=base_model_additional_loras,

modules/util.py

@@ -12,6 +12,10 @@ from PIL import Image
 
 LANCZOS = (Image.Resampling.LANCZOS if hasattr(Image, 'Resampling') else Image.LANCZOS)
 
+# Regexp compiled once. Matches entries with the following pattern:
+# <lora:some_lora:1>
+# <lora:aNotherLora:-1.6>
+LORAS_PROMPT_PATTERN = re.compile(".*<lora:(.+):([-+]?(?:\d*\.*\d*))>.*")
 
 def erode_or_dilate(x, k):
     k = int(k)
@@ -183,13 +187,13 @@ def ordinal_suffix(number: int) -> str:
     return 'th' if 10 <= number % 100 <= 20 else {1: 'st', 2: 'nd', 3: 'rd'}.get(number % 10, 'th')
 
 
-def parse_lora_references_from_prompt(items: str, loras: List[Tuple[AnyStr, float]]):
-    pattern = re.compile(".*<lora:(.+):(([0-9]*[.])?[0-9]+)>.*")
+def parse_lora_references_from_prompt(items: str, loras: List[Tuple[AnyStr, float]], loras_limit: int = 5):
+    
     new_loras = []
 
     for token in items.split(","):
-        print(token)
-        m = pattern.match(token)
+        
+        m = LORAS_PROMPT_PATTERN.match(token)
 
         if m:
             new_loras.append((f"{m.group(1)}.safetensors", float(m.group(2))))
@@ -200,4 +204,4 @@ def parse_lora_references_from_prompt(items: str, loras: List[Tuple[AnyStr, floa
         if lora[0] != "None":
             updated_loras.append(lora)
 
-    return updated_loras
+    return updated_loras[:loras_limit]

tests/__init__.py

@@ -0,0 +1,4 @@
+import sys
+import pathlib
+
+sys.path.append(pathlib.Path(f'{__file__}/../modules').parent.resolve())

tests/test_utils.py

@@ -0,0 +1,44 @@
+import unittest
+from modules import util
+
+
+class TestUtils(unittest.TestCase):
+    def test_can_parse_tokens_with_lora(self):
+
+        test_cases = [
+            {
+                "input": ("some prompt, very cool, <lora:hey-lora:0.4>,  cool   <lora:you-lora:0.2>", [], 5),
+                "output": [("hey-lora.safetensors", 0.4), ("you-lora.safetensors", 0.2)],
+            },
+            # Test can not exceed limit
+            {
+                "input": ("some prompt, very cool, <lora:hey-lora:0.4>,  cool   <lora:you-lora:0.2>", [], 1),
+                "output": [("hey-lora.safetensors", 0.4)],
+            },
+            # test Loras from UI take precedence over prompt
+            {
+                "input": (
+                    "some prompt, very cool, <lora:l1:0.4>, <lora:l2:0.2>, <lora:l3:0.3>, <lora:l4:0.5>, <lora:l6:0.24>, <lora:l7:0.1>",
+                    [("hey-lora.safetensors", 0.4)],
+                    5,
+                ),
+                "output": [
+                    ("hey-lora.safetensors", 0.4),
+                    ("l1.safetensors", 0.4),
+                    ("l2.safetensors", 0.2),
+                    ("l3.safetensors", 0.3),
+                    ("l4.safetensors", 0.5),
+                ],
+            },
+            # Test lora specification not separated by comma are ignored, only latest specified is used
+            {
+                "input": ("some prompt, very cool, <lora:hey-lora:0.4><lora:you-lora:0.2>", [], 3),
+                "output": [("you-lora.safetensors", 0.2)],
+            },
+        ]
+
+        for test in test_cases:
+            promp, loras, loras_limit = test["input"]
+            expected = test["output"]
+            actual = util.parse_lora_references_from_prompt(promp, loras, loras_limit)
+            self.assertEqual(expected, actual)