using System.Globalization;
using Shouldly;

namespace Schaad.Accounting.Tests;

public class FormattingTestShould
{
    [Theory]
    [InlineData(0, "0.00")]
    [InlineData(1.5, "1.50")]
    [InlineData(-1.5, "-1.50")]
    [InlineData(1234.5, "1'234.50")]
    [InlineData(1234567.89, "1'234'567.89")]
    [InlineData(-1234567.89, "-1'234'567.89")]
    public void FormatDecimalWithSwissThousandsSeparatorWhenCalled(decimal value, string expected)
    {
        value.ToFormattedString().ShouldBe(expected);
    }

    [Fact]
    public void RoundToTwoDecimalsWhenValueHasMorePrecision()
    {
        1.234m.ToFormattedString().ShouldBe("1.23");
        1.235m.ToFormattedString().ShouldBe("1.24");
    }

    [Fact]
    public void IgnoreAmbientCultureWhenFormatting()
    {
        var previous = CultureInfo.CurrentCulture;
        try
        {
            CultureInfo.CurrentCulture = CultureInfo.InvariantCulture;
            1234.5m.ToFormattedString().ShouldBe("1'234.50");
        }
        finally
        {
            CultureInfo.CurrentCulture = previous;
        }
    }
}