test_api.py

#!/usr/bin/env python
"""Test the NeuralFoil API via HTTP requests"""

import requests
import json

# API endpoint
API_URL = "http://127.0.0.1:7861/api/predict"

print("Testing NeuralFoil API")
print("=" * 60)
print("Make sure the app is running: python app.py")
print("=" * 60)

# Test 1: Simple airfoil
print("\nTest 1: Simple airfoil with 9 points")
print("-" * 60)

coordinates = [
    [1.0, 0.0],
    [0.75, 0.03],
    [0.5, 0.05],
    [0.25, 0.04],
    [0.0, 0.0],
    [0.25, -0.02],
    [0.5, -0.03],
    [0.75, -0.02],
    [1.0, 0.0]
]

payload = {
    "data": [
        coordinates,  # airfoil coordinates
        5.0,          # angle of attack (degrees)
        1000000,      # Reynolds number
        "small"       # model size
    ]
}

try:
    response = requests.post(API_URL, json=payload)
    response.raise_for_status()
    result = response.json()
    
    if "data" in result and len(result["data"]) > 0:
        data = result["data"][0]
        
        print("✓ API call successful!")
        print(f"\nAerodynamic coefficients:")
        print(f"  CL = {data.get('CL', 'N/A')}")
        print(f"  CD = {data.get('CD', 'N/A')}")
        print(f"  CM = {data.get('CM', 'N/A')}")
        print(f"  Confidence = {data.get('analysis_confidence', 'N/A')}")
        
        if 'pressure_coefficients' in data:
            pc = data['pressure_coefficients']
            print(f"\nPressure coefficients:")
            print(f"  Upper surface: {len(pc.get('upper_surface_cp', []))} interpolated points")
            print(f"  Lower surface: {len(pc.get('lower_surface_cp', []))} interpolated points")
            print(f"  Upper (32 BL): {len(pc.get('upper_surface_cp_32', []))} points")
            print(f"  Lower (32 BL): {len(pc.get('lower_surface_cp_32', []))} points")
    else:
        print("✗ Unexpected response format")
        print(json.dumps(result, indent=2)[:200])
        
except requests.exceptions.ConnectionError:
    print("✗ Error: Cannot connect to API")
    print(f"   Make sure the app is running on {API_URL}")
    print("   Run: python app.py")
except Exception as e:
    print(f"✗ Error: {e}")

# Test 2: RAE 2822 from file
print("\n\nTest 2: RAE 2822 airfoil from file")
print("-" * 60)

try:
    with open("examples/rae2822.dat", "r") as f:
        lines = f.readlines()[1:]  # Skip header
    
    coordinates = []
    for line in lines:
        parts = line.strip().split()
        if len(parts) >= 2:
            coordinates.append([float(parts[0]), float(parts[1])])
    
    print(f"Loaded {len(coordinates)} coordinate points")
    
    payload = {
        "data": [
            coordinates,
            2.0,      # alpha (deg)
            6e6,      # reynolds
            "large"   # model_size
        ]
    }
    
    response = requests.post(API_URL, json=payload)
    response.raise_for_status()
    result = response.json()
    
    if "data" in result and len(result["data"]) > 0:
        data = result["data"][0]
        
        print("✓ API call successful!")
        print(f"\nAerodynamic coefficients:")
        print(f"  CL = {data.get('CL', 'N/A')}")
        print(f"  CD = {data.get('CD', 'N/A')}")
        print(f"  CM = {data.get('CM', 'N/A')}")
        
        cl = data.get('CL', 0)
        cd = data.get('CD', 1)
        ld = cl / cd if cd and cd > 0 else 0
        print(f"  L/D = {ld:.1f}")
        
        if 'pressure_coefficients' in data:
            pc = data['pressure_coefficients']
            print(f"\nPressure coefficients:")
            print(f"  Upper surface: {len(pc.get('upper_surface_cp', []))} interpolated points")
            print(f"  Lower surface: {len(pc.get('lower_surface_cp', []))} interpolated points")
    
except FileNotFoundError:
    print("✗ Error: examples/rae2822.dat not found")
except requests.exceptions.ConnectionError:
    print("✗ Error: Cannot connect to API")
except Exception as e:
    print(f"✗ Error: {e}")

print("\n" + "=" * 60)
print("Testing complete!")
print("=" * 60)