// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.ComponentModel.Design.Serialization;
using System.Windows.Forms.TestUtilities;

namespace System.Windows.Forms.Tests;

// NB: doesn't require thread affinity
public class OpacityConverterTests
{
    public static TheoryData<Type, bool> CanConvertFromData =>
        CommonTestHelper.GetConvertFromTheoryData();

    [Theory]
    [MemberData(nameof(CanConvertFromData))]
    [InlineData(typeof(string), true)]
    public void OpacityConverter_CanConvertFrom_Invoke_ReturnsExpected(Type sourceType, bool expected)
    {
        OpacityConverter converter = new();
        Assert.Equal(expected, converter.CanConvertFrom(sourceType));
    }

    public static IEnumerable<object[]> ConvertFrom_TestData()
    {
        yield return new object[] { "0%", 0.0 };
        yield return new object[] { "100%", 1.0 };
        yield return new object[] { "90%", 0.9 };
        yield return new object[] { "  90  %  ", 0.9 };
        yield return new object[] { "0.0", 0.0 };
        yield return new object[] { "0.9", 0.9 };
        yield return new object[] { "1.0", 1.0 };
        yield return new object[] { "1.2%", 0.012 };
        yield return new object[] { "1.1", 0.011 };
    }

    [Theory]
    [MemberData(nameof(ConvertFrom_TestData))]
    public void OpacityConverter_ConvertFrom_String_ReturnsExpected(string value, double expected)
    {
        OpacityConverter converter = new();
        Assert.Equal(expected, Assert.IsType<double>(converter.ConvertFrom(value)), 5);
        Assert.Equal(expected, Assert.IsType<double>(converter.ConvertFrom(null, null, value)), 5);
    }

    [Theory]
    [InlineData(1)]
    [InlineData(null)]
    public void OpacityConverter_ConvertFrom_InvalidValue_ThrowsNotSupportedException(object value)
    {
        OpacityConverter converter = new();
        Assert.Throws<NotSupportedException>(() => converter.ConvertFrom(value));
    }

    [Theory]
    [InlineData("")]
    [InlineData("1%.2")]
    [InlineData("-1")]
    [InlineData("101")]
    [InlineData("-1%")]
    [InlineData("101%")]
    [InlineData("-0.1")]
    [InlineData("-0.1%")]
    [InlineData("invalid")]
    public void OpacityConverter_ConvertFrom_InvalidString_ThrowsFormatException(string value)
    {
        OpacityConverter converter = new();
        Assert.Throws<FormatException>(() => converter.ConvertFrom(value));
    }

    [Theory]
    [InlineData(typeof(string), true)]
    [InlineData(typeof(InstanceDescriptor), false)]
    [InlineData(typeof(double), false)]
    [InlineData(typeof(int), false)]
    [InlineData(null, false)]
    public void OpacityConverter_CanConvertTo_Invoke_ReturnsExpected(Type destinationType, bool expected)
    {
        OpacityConverter converter = new();
        Assert.Equal(expected, converter.CanConvertTo(destinationType));
    }

    [Theory]
    [InlineData(0.0, "0%")]
    [InlineData(0, "0")]
    public void OpacityConverter_ConvertTo_String_ReturnsExpected(object value, string expected)
    {
        OpacityConverter converter = new();
        Assert.Equal(expected, converter.ConvertTo(value, typeof(string)));
        Assert.Equal(expected, converter.ConvertTo(null, null, value, typeof(string)));
    }

    [Fact]
    public void OpacityConverter_ConvertTo_NullDestinationType_ThrowsArgumentNullException()
    {
        OpacityConverter converter = new();
        Assert.Throws<ArgumentNullException>("destinationType", () => converter.ConvertTo(new object(), null));
    }

    [Fact]
    public void OpacityConverter_ConvertTo_ValueNotDouble_ThrowsNotSupportedException()
    {
        OpacityConverter converter = new();
        Assert.Throws<NotSupportedException>(() => converter.ConvertTo(1, typeof(InstanceDescriptor)));
    }

    [Theory]
    [InlineData(typeof(double))]
    [InlineData(typeof(InstanceDescriptor))]
    [InlineData(typeof(int))]
    public void OpacityConverter_ConvertTo_InvalidDestinationType_ThrowsNotSupportedException(Type destinationType)
    {
        OpacityConverter converter = new();
        Assert.Throws<NotSupportedException>(() => converter.ConvertTo(1.1, destinationType));
    }

    [Fact]
    public void OpacityConverter_ConverterGetCreateInstanceSupported_Invoke_ReturnsFalse()
    {
        OpacityConverter converter = new();
        Assert.False(converter.GetCreateInstanceSupported());
    }

    [Fact]
    public void OpacityConverter_ConverterGetPropertiesSupported_Invoke_ReturnsFalse()
    {
        OpacityConverter converter = new();
        Assert.False(converter.GetPropertiesSupported());
    }
}
