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"""
A test script to test the gRPC service
"""
import unittest
import subprocess
import time
import os
import tempfile
import backend_pb2
import backend_pb2_grpc
import grpc
class TestBackendServicer(unittest.TestCase):
"""
TestBackendServicer is the class that tests the gRPC service
"""
def setUp(self):
"""
This method sets up the gRPC service by starting the server
"""
self.service = subprocess.Popen(["python3", "backend.py", "--addr", "localhost:50051"])
time.sleep(30)
def tearDown(self) -> None:
"""
This method tears down the gRPC service by terminating the server
"""
self.service.terminate()
self.service.wait()
def test_server_startup(self):
"""
This method tests if the server starts up successfully
"""
try:
self.setUp()
with grpc.insecure_channel("localhost:50051") as channel:
stub = backend_pb2_grpc.BackendStub(channel)
response = stub.Health(backend_pb2.HealthMessage())
self.assertEqual(response.message, b'OK')
except Exception as err:
print(err)
self.fail("Server failed to start")
finally:
self.tearDown()
def test_load_model(self):
"""
This method tests if the model is loaded successfully
"""
try:
self.setUp()
with grpc.insecure_channel("localhost:50051") as channel:
stub = backend_pb2_grpc.BackendStub(channel)
response = stub.LoadModel(backend_pb2.ModelOptions())
print(response)
self.assertTrue(response.success)
self.assertEqual(response.message, "Model loaded successfully")
except Exception as err:
print(err)
self.fail("LoadModel service failed")
finally:
self.tearDown()
def test_tts_with_hf_voice(self):
"""
This method tests TTS generation with HuggingFace voice URL
"""
try:
self.setUp()
with grpc.insecure_channel("localhost:50051") as channel:
stub = backend_pb2_grpc.BackendStub(channel)
# Load model
response = stub.LoadModel(backend_pb2.ModelOptions())
self.assertTrue(response.success)
# Create temporary output file
with tempfile.NamedTemporaryFile(suffix='.wav', delete=False) as tmp_file:
output_path = tmp_file.name
# Test TTS with HuggingFace voice URL
tts_request = backend_pb2.TTSRequest(
text="Hello world, this is a test.",
dst=output_path,
voice="azelma"
)
tts_response = stub.TTS(tts_request)
self.assertTrue(tts_response.success)
# Verify output file exists and is not empty
self.assertTrue(os.path.exists(output_path))
self.assertGreater(os.path.getsize(output_path), 0)
# Cleanup
os.unlink(output_path)
except Exception as err:
print(err)
self.fail("TTS service failed")
finally:
self.tearDown()
def test_tts_with_default_voice(self):
"""
This method tests TTS generation with default voice (via AudioPath in LoadModel)
"""
try:
self.setUp()
with grpc.insecure_channel("localhost:50051") as channel:
stub = backend_pb2_grpc.BackendStub(channel)
# Load model with default voice
load_request = backend_pb2.ModelOptions(
Options=["default_voice:azelma"]
)
response = stub.LoadModel(load_request)
self.assertTrue(response.success)
# Create temporary output file
with tempfile.NamedTemporaryFile(suffix='.wav', delete=False) as tmp_file:
output_path = tmp_file.name
# Test TTS without specifying voice (should use default)
tts_request = backend_pb2.TTSRequest(
text="Hello world, this is a test.",
dst=output_path
)
tts_response = stub.TTS(tts_request)
self.assertTrue(tts_response.success)
# Verify output file exists and is not empty
self.assertTrue(os.path.exists(output_path))
self.assertGreater(os.path.getsize(output_path), 0)
# Cleanup
os.unlink(output_path)
except Exception as err:
print(err)
self.fail("TTS service with default voice failed")
finally:
self.tearDown()
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