Update tests pt.2

Author: Diegomangasco

Diff for: machine_learning/dimensionality_reduction.py

@@ -165,7 +165,7 @@ def test_linear_discriminant_analysis() -> None:
     # Create dummy dataset with 2 classes and 3 features
     features = np.array([[1, 2, 3, 4, 5], [2, 3, 4, 5, 6], [3, 4, 5, 6, 7]])
     labels = np.array([0, 0, 0, 1, 1])
-    classes = 2
+    classes = 3
     dimensions = 2
 
     projected_data = linear_discriminant_analysis(features, labels, classes, dimensions)