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#!/usr/bin/env python3
"""
Test script for the enhanced multilingual translation service.
Demonstrates automatic language detection and single-language responses.
"""
from translation_service import translation_service, translate_chatbot_response
def test_language_detection():
"""Test language detection accuracy"""
print("=" * 60)
print("TESTING LANGUAGE DETECTION")
print("=" * 60)
test_cases = [
# English
("Hello, how are you today?", "en"),
("I'm feeling anxious and need help", "en"),
("What are the symptoms of depression?", "en"),
# French
("Bonjour, comment allez-vous?", "fr"),
("Je me sens anxieux et j'ai besoin d'aide", "fr"),
("Quels sont les symptômes de la dépression?", "fr"),
# Kiswahili
("Hujambo, habari yako?", "sw"),
("Nina wasiwasi na ninahitaji msaada", "sw"),
("Je suis très stressé par mon travail", "sw"), # Mixed French
# Kinyarwanda
("Muraho, murakoze cyane", "rw"),
("Ndi mu bwoba kandi ndabishaka ubufasha", "rw"),
("Ndi mu bwoba bunyuma cyane", "rw"),
]
for message, expected_lang in test_cases:
detected = translation_service.detect_language(message)
status = "✅" if detected == expected_lang else "❌"
print(f"{status} '{message[:30]}...' -> Expected: {expected_lang}, Got: {detected}")
def test_translation_quality():
"""Test translation quality and single-language responses"""
print("\n" + "=" * 60)
print("TESTING TRANSLATION QUALITY")
print("=" * 60)
# Test cases: (user_message, english_response, expected_language)
test_cases = [
(
"Hello, I need mental health support",
"I'm here to help you with your mental health concerns. How are you feeling today?",
"en"
),
(
"Bonjour, j'ai besoin d'aide pour ma santé mentale",
"I'm here to help you with your mental health concerns. How are you feeling today?",
"fr"
),
(
"Hujambo, ninahitaji msaada wa afya ya akili",
"I'm here to help you with your mental health concerns. How are you feeling today?",
"sw"
),
(
"Muraho, ndabishaka ubufasha mu by'ubuzima bwo mu mutwe",
"I'm here to help you with your mental health concerns. How are you feeling today?",
"rw"
),
]
for user_msg, english_resp, expected_lang in test_cases:
print(f"\n--- Testing {expected_lang.upper()} ---")
print(f"User: {user_msg}")
print(f"English Response: {english_resp}")
# Test the main convenience function
translated = translate_chatbot_response(user_msg, english_resp)
print(f"Translated Response: {translated}")
# Verify it's different from English (unless English was detected)
if expected_lang != "en":
is_translated = translated != english_resp
status = "✅" if is_translated else "❌"
print(f"{status} Translation successful: {is_translated}")
def test_edge_cases():
"""Test edge cases and error handling"""
print("\n" + "=" * 60)
print("TESTING EDGE CASES")
print("=" * 60)
edge_cases = [
("", "Hello"), # Empty user message
("Hi", ""), # Empty response
("a", "Very short response"), # Very short message
("123456", "Numbers only"), # Numbers only
("!@#$%^&*()", "Special characters"), # Special characters only
]
for user_msg, english_resp in edge_cases:
print(f"\nTesting: User='{user_msg}', Response='{english_resp}'")
try:
result = translate_chatbot_response(user_msg, english_resp)
print(f"Result: {result}")
except Exception as e:
print(f"Error: {e}")
def test_supported_languages():
"""Test supported languages functionality"""
print("\n" + "=" * 60)
print("TESTING SUPPORTED LANGUAGES")
print("=" * 60)
supported = translation_service.get_supported_languages()
print(f"Supported languages: {supported}")
# Test language name mapping
for lang_code in supported:
lang_name = translation_service.get_language_name(lang_code)
is_supported = translation_service.is_supported_language(lang_code)
print(f"{lang_code} -> {lang_name} (supported: {is_supported})")
def main():
"""Run all tests"""
print("ENHANCED MULTILINGUAL TRANSLATION SERVICE TEST")
print("=" * 60)
print("This test demonstrates the professional multilingual chatbot")
print("that automatically detects user language and responds exclusively")
print("in that same language using GoogleTranslator.")
print("=" * 60)
try:
test_language_detection()
test_translation_quality()
test_edge_cases()
test_supported_languages()
print("\n" + "=" * 60)
print("TEST COMPLETED SUCCESSFULLY!")
print("=" * 60)
print("The enhanced translation service is ready for production use.")
print("Key features:")
print("✅ Automatic language detection from user input")
print("✅ Exclusively responds in detected language")
print("✅ Uses GoogleTranslator for high-quality translation")
print("✅ Maintains natural tone and accuracy")
print("✅ Supports English, French, Kiswahili, and Kinyarwanda")
except Exception as e:
print(f"\n❌ Test failed with error: {e}")
import traceback
traceback.print_exc()
if __name__ == "__main__":
main()
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