diff --git a/tests/test_datasets.py b/tests/test_datasets.py
index 611cf8c..7c54732 100644
--- a/tests/test_datasets.py
+++ b/tests/test_datasets.py
@@ -6,23 +6,23 @@
 
 test_datasets = [
     # Token datasets
-    ("token classification", "conll2003"),
-    ("token classification", "wnut_17"),
+    ("token classification", "conll2003", 0.01),
+    ("token classification", "wnut_17", 0.05),
 
     # Text classification
-    ("text classification", "trec"),
-    ("text classification", "stanfordnlp/sst2"),
-    ("text classification", "hate_speech18"),
+    ("text classification", "trec", 0.05),
+    ("text classification", "stanfordnlp/sst2", 0.005),
+    ("text classification", "hate_speech18", 0.025),
 
     # Text-pair classification
-    ("text classification", "yangwang825/sick"),
-    ("text classification", "SetFit/rte"),
+    ("text classification", "yangwang825/sick", 0.025),
+    ("text classification", "SetFit/rte", 0.05),
 ]
 
-@pytest.mark.parametrize("task_type,dataset_name", test_datasets)
-def test_datacleaner(task_type, dataset_name):
+@pytest.mark.parametrize("task_type,dataset_name,downsampling_ratio", test_datasets)
+def test_datacleaner(task_type, dataset_name, downsampling_ratio):
 
-    preprocessor = DatasetCleaner(dataset_downsample=0.2)
+    preprocessor = DatasetCleaner(dataset_downsample=downsampling_ratio)
     dataset = preprocessor.prepare_dataset(dataset_name)
 
     # Test dataset preprocessing
diff --git a/tests/test_embedder.py b/tests/test_embedder.py
index 8dd1a59..51b9de0 100644
--- a/tests/test_embedder.py
+++ b/tests/test_embedder.py
@@ -11,25 +11,15 @@
 
 
 def test_embedder_inputs(small_language_models):
-    embeddings = {
-        'prajjwal1/bert-tiny': [],
-        'google/electra-small-discriminator': []
-    }
-
     for model in small_language_models:
         embedder = Embedder(model=model, layer_ids="all")
-        model_name = embedder.model_name
 
         for sentence in test_sentences:
             embedding = embedder.embed(sentence)
-            embeddings[model_name].append(embedding)
+            assert embedding is not None and embedding != [], f"Empty or None embedding found for model {embedder.model_name}"
 
-    for model_name, sentence_embeddings in embeddings.items():
-        for embedding in sentence_embeddings:
-            assert embedding is not None and embedding != [], f"Empty or None embedding found for model {model_name}"
 
-
-def test_embedder_outputs(small_language_models):
+def test_embedder_word_level(small_language_models):
     for model in small_language_models:
         embedder = Embedder(model=model, layer_ids="all")  # test word-level embedder
         model_name = embedder.model_name
@@ -40,6 +30,8 @@ def test_embedder_outputs(small_language_models):
         assert embedding.shape[:2] == (5, num_layers), \
             f"Expected first two dimensions to be (5, {num_layers}), got {embedding.shape[:2]} using model {model_name}"
 
+
+def test_embedder_sentence_pooling(small_language_models):
     for model in small_language_models:
         embedder = Embedder(model=model, layer_ids="all", sentence_pooling="mean")  # test sentence-level embedder
         model_name = embedder.model_name
diff --git a/tests/test_ranker.py b/tests/test_ranker.py
index 92e73f5..eff0e60 100644
--- a/tests/test_ranker.py
+++ b/tests/test_ranker.py
@@ -2,10 +2,10 @@
 
 
 def test_ranker_trec(small_language_models, trec):
-    ranker = TransformerRanker(dataset=trec, dataset_downsample=0.2)
+    ranker = TransformerRanker(dataset=trec, dataset_downsample=0.05)
     ranker.run(models=small_language_models, batch_size=64)
 
 
 def test_ranker_conll(small_language_models, conll):
-    ranker = TransformerRanker(dataset=conll, dataset_downsample=0.2)
+    ranker = TransformerRanker(dataset=conll, dataset_downsample=0.01)
     ranker.run(models=small_language_models, batch_size=64)