Use self.get_temp_dir and simplify the test

PiperOrigin-RevId: 332512380

official/nlp/modeling/layers/tn_expand_condense_test.py

@@ -15,7 +15,6 @@
 """Tests for ExpandCondense tensor network layer."""
 
 import os
-import shutil
 
 from absl.testing import parameterized
 import numpy as np
@@ -166,20 +165,10 @@ class TNLayerTest(tf.test.TestCase, parameterized.TestCase):
     # Train the model for 5 epochs
     model.fit(data, self.labels, epochs=5, batch_size=32)
 
-    for save_path in ['/test_model', '/test_model.h5']:
-      # Save model to a SavedModel folder or h5 file, then load model
-      save_path = os.environ['TEST_UNDECLARED_OUTPUTS_DIR'] + save_path
+    save_path = os.path.join(self.get_temp_dir(), 'test_model')
     model.save(save_path)
     loaded_model = tf.keras.models.load_model(save_path)
 
-      # Clean up SavedModel folder
-      if os.path.isdir(save_path):
-        shutil.rmtree(save_path)
-
-      # Clean up h5 file
-      if os.path.exists(save_path):
-        os.remove(save_path)
-
     # Compare model predictions and loaded_model predictions
     self.assertAllEqual(model.predict(data), loaded_model.predict(data))