Tests: New Test for RecipeSucuk.py

Author: EdenBernhard

project/backend/tests/test_recipe_sucuk.py

@@ -0,0 +1,107 @@
+import sys
+import os
+from unittest.mock import patch
+
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
+
+import RecipeSucuk
+import Ingredient as IngredientModule
+from Ingredient import Ingredient
+from RecipeSucuk import findRecipes
+
+
+# ── Hilfsfunktionen ────────────────────────────────────────────
+
+def makeRawRecipe(id: int, name: str, description: str = "") -> dict:
+    return {"id": id, "name": name, "description": description}
+
+def makeRawIngredient(name: str, amount: float = 1.0) -> dict:
+    return {"name": name, "amount": amount, "amountType": "g"}
+
+def mockIngredients(mapping: dict):
+    return lambda rid: mapping.get(rid, [])
+
+def runFindRecipes(rawRecipes, ingredientMapping, searchIngredients, index=0):
+    """Hilfsfunktion: patcht beide DB-Aufrufe und ruft findRecipes auf."""
+    with patch.object(RecipeSucuk, "getAllRecipes", return_value=rawRecipes), \
+         patch.object(IngredientModule, "getAllIngredientsForRecipe",
+                      side_effect=mockIngredients(ingredientMapping)):
+        return findRecipes(searchIngredients, index)
+
+
+# ── Tests ──────────────────────────────────────────────────────
+
+class TestFindRecipesKeinTreffer:
+    def testLeereDB(self):
+        result = runFindRecipes([], {}, [Ingredient("Mehl", 1)])
+        assert result == []
+
+    def testKeineUebereinstimmung(self):
+        raw = [makeRawRecipe(1, "Pasta")]
+        ing = {1: [makeRawIngredient("Nudeln")]}
+        result = runFindRecipes(raw, ing, [Ingredient("Mehl", 1)])
+        assert len(result) == 1
+        assert result[0].getRating() == 0.0
+
+    def testLeereZutatenliste(self):
+        raw = [makeRawRecipe(1, "Pasta"), makeRawRecipe(2, "Pizza")]
+        ing = {1: [makeRawIngredient("Nudeln")], 2: [makeRawIngredient("Teig")]}
+        result = runFindRecipes(raw, ing, [])
+        assert len(result) == 2
+
+
+class TestFindRecipesTreffer:
+    def testEinTreffer(self):
+        raw = [makeRawRecipe(1, "Pasta")]
+        ing = {1: [makeRawIngredient("Nudeln"), makeRawIngredient("Salz")]}
+        result = runFindRecipes(raw, ing, [Ingredient("Nudeln", 1)])
+        assert len(result) == 1
+        assert result[0].getName() == "Pasta"
+        assert result[0].getRating() == 0.5  # 1 von 2 Zutaten
+
+    def testMehrereTrefferSortierungNachRating(self):
+        raw = [makeRawRecipe(1, "Pasta"), makeRawRecipe(2, "Pizza")]
+        ing = {
+            1: [makeRawIngredient("Nudeln"), makeRawIngredient("Salz")],
+            2: [makeRawIngredient("Teig")],
+        }
+        # Nudeln trifft Pasta (1/2 = 0.5), Teig trifft Pizza (1/1 = 1.0)
+        result = runFindRecipes(raw, ing, [Ingredient("Nudeln", 1), Ingredient("Teig", 1)])
+        assert result[0].getName() == "Pizza"  # Rating 1.0
+        assert result[1].getName() == "Pasta"  # Rating 0.5
+
+    def testRatingBerechnung(self):
+        raw = [makeRawRecipe(1, "Pasta")]
+        ing = {1: [makeRawIngredient("A"), makeRawIngredient("B"), makeRawIngredient("C")]}
+        result = runFindRecipes(raw, ing, [Ingredient("A", 1), Ingredient("B", 1)])
+        assert round(result[0].getRating(), 4) == round(2 / 3, 4)  # 2 von 3 Zutaten
+
+    def testAlleZutatenTreffen(self):
+        raw = [makeRawRecipe(1, "Pasta")]
+        ing = {1: [makeRawIngredient("Nudeln"), makeRawIngredient("Salz")]}
+        result = runFindRecipes(raw, ing, [Ingredient("Nudeln", 1), Ingredient("Salz", 1)])
+        assert result[0].getRating() == 1.0
+
+
+class TestFindRecipesPaginierung:
+    def _buildRecipes(self, n: int):
+        raw = [makeRawRecipe(i, f"Rezept{i}") for i in range(n)]
+        ing = {i: [makeRawIngredient(f"Zutat{i}")] for i in range(n)}
+        return raw, ing
+
+    def testErsteSeite(self):
+        raw, ing = self._buildRecipes(15)
+        assert len(runFindRecipes(raw, ing, [])) == 12
+
+    def testZweiteSeite(self):
+        raw, ing = self._buildRecipes(15)
+        assert len(runFindRecipes(raw, ing, [], index=1)) == 3
+
+    def testLeereSeite(self):
+        raw, ing = self._buildRecipes(5)
+        assert runFindRecipes(raw, ing, [], index=1) == []
+
+    def testGenauZwoelfRezepte(self):
+        raw, ing = self._buildRecipes(12)
+        assert len(runFindRecipes(raw, ing, [], index=0)) == 12
+        assert runFindRecipes(raw, ing, [], index=1) == []