Improve data_path resolvement (#1567)

tests/data_tests/test_loader.py

@@ -6,7 +6,7 @@
 import torch
 from torch.utils.data import DataLoader
 
-from tests import get_tests_output_path
+from tests import get_tests_data_path, get_tests_output_path
 from TTS.tts.configs.shared_configs import BaseDatasetConfig, BaseTTSConfig
 from TTS.tts.datasets import TTSDataset, load_tts_samples
 from TTS.tts.utils.text.tokenizer import TTSTokenizer
@@ -20,7 +20,7 @@
 # create a dummy config for testing data loaders.
 c = BaseTTSConfig(text_cleaner="english_cleaners", num_loader_workers=0, batch_size=2, use_noise_augment=False)
 c.r = 5
-c.data_path = "tests/data/ljspeech/"
+c.data_path = os.path.join(get_tests_data_path(), "ljspeech/")
 ok_ljspeech = os.path.exists(c.data_path)
 
 dataset_config = BaseDatasetConfig(