Sure! Let's create a test case generator for the problem statement provided. This generator will create random test cases adhering to the given constraints.

Here is the test case generator function:

```python
import random

def tcgen():
    # Generate a random integer N (1 ≤ N ≤ 2 * 10^5)
    N = random.randint(1, 2 * 10**5)
    
    # Generate a list of N integers where each integer A[i] (1 ≤ A[i] ≤ 10^6)
    A = [random.randint(1, 10**6) for _ in range(N)]
    
    return N, A

# Function to print the test case in the required format
def print_test_case():
    N, A = tcgen()
    print(N)
    print(" ".join(map(str, A)))

# Example usage
print_test_case()
```

This function `tcgen` generates a random integer `N` within the specified range and a list of `N` integers where each integer falls within the specified range. The `print_test_case` function then formats and prints the generated test case in the required format.

You can run the `print_test_case` function to generate and print a random test case. Each call to this function will produce a new test case that adheres to the problem constraints.