using NUnit.Framework;

/// <summary>
/// Test the UserCreationScreen class
/// </summary>
[TestFixture]
public class UserCreationScreenTest
{
    /// <summary>
    /// Tets IsValidUsername will return <c>true</c> for an valid username
    /// </summary>
    [Test]
    public void Test_UserCreationScreen_IsValidUsername_True()
    {
        foreach (char c in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
            Assert.IsTrue(UserCreationScreen.IsValidUsername(c.ToString()));

        Assert.IsTrue(UserCreationScreen.IsValidUsername("123456789AbC"));
    }

    /// <summary>
    /// Tets IsValidUsername will return <c>false</c> for an invalid username
    /// </summary>
    [Test]
    public void Test_UserCreationScreen_IsValidUsername_False()
    {
        Assert.IsFalse(UserCreationScreen.IsValidUsername(string.Empty));
        foreach (char c in " \n\t+-*/%_.,;:!?(){}[]\\'\"|&~^$")
            Assert.IsFalse(UserCreationScreen.IsValidUsername(c.ToString()));

        Assert.IsFalse(UserCreationScreen.IsValidUsername("123456789_10_11_12_13"));
    }
}