public void CreateInstance()
{
MarginsConverter mc = new MarginsConverter();
MyTypeDescriptorContext context = new MyTypeDescriptorContext();
IDictionary values = new Dictionary <string, int>();
values.Add("Left", 1);
values.Add("Right", 2);
values.Add("Top", 3);
Assert.Throws <ArgumentException>(() => mc.CreateInstance(context, values));
values.Add("Bottom", 4);
object result = mc.CreateInstance(context, values);
Assert.NotNull(result);
Assert.IsType <Margins>(result);
Margins margins = result as Margins;
Assert.Equal(1, margins.Left);
Assert.Equal(2, margins.Right);
Assert.Equal(3, margins.Top);
Assert.Equal(4, margins.Bottom);
}
public void ConvertTo()
{
MarginsConverter mc = new MarginsConverter();
Guid guid = Guid.NewGuid();
CultureInfo culture = CultureInfo.InvariantCulture;
Margins margins = new Margins()
{
Left = 1, Right = 2, Top = 3, Bottom = 4
};
// try once with then once without context
for (var context = new MyTypeDescriptorContext(); context != null; context = null)
{
Assert.Equal("1;2;3;4", mc.ConvertTo(context, culture, "1;2;3;4", typeof(string)));
object converted = mc.ConvertTo(context, culture, margins, typeof(string));
Assert.IsType <string>(converted);
Assert.Equal(',', culture.TextInfo.ListSeparator[0]);
Assert.Equal("1, 2, 3, 4", converted);
converted = mc.ConvertTo(context, culture, margins, typeof(InstanceDescriptor));
Assert.IsType <InstanceDescriptor>(converted);
Assert.Equal(new object[] { 1, 2, 3, 4 }, ((InstanceDescriptor)converted).Arguments);
Assert.Throws <NotSupportedException>(() => mc.ConvertTo(context, culture, new object(), typeof(object)));
Assert.Throws <NotSupportedException>(() => mc.ConvertTo(context, culture, 12, typeof(int)));
Assert.Throws <NotSupportedException>(() => mc.ConvertTo(context, culture, guid, typeof(Guid)));
}
}
public void CanConvertTo()
{
MarginsConverter mc = new MarginsConverter();
// try once with then once without context
for (var context = new MyTypeDescriptorContext(); context != null; context = null)
{
Assert.True(mc.CanConvertTo(context, typeof(string)));
Assert.False(mc.CanConvertTo(context, typeof(Guid)));
Assert.False(mc.CanConvertTo(context, typeof(object)));
Assert.False(mc.CanConvertTo(context, typeof(int)));
}
}
public void ConvertFrom_Throws()
{
MarginsConverter mc = new MarginsConverter();
CultureInfo culture = CultureInfo.InvariantCulture;
// try once with then once without context
for (var context = new MyTypeDescriptorContext(); context != null; context = null)
{
Assert.Throws <NotSupportedException>(() => mc.ConvertFrom(context, null, null));
Assert.Throws <NotSupportedException>(() => mc.ConvertFrom(context, culture, null));
Assert.Throws <NotSupportedException>(() => mc.ConvertFrom(context, culture, Guid.NewGuid()));
AssertExtensions.Throws <ArgumentException, Exception>(() => mc.ConvertFrom(context, null, "wrong string format"));
AssertExtensions.Throws <ArgumentException, Exception>(() => mc.ConvertFrom(context, culture, "wrong string format"));
}
}
public void ConvertFrom()
{
MarginsConverter mc = new MarginsConverter();
CultureInfo culture = CultureInfo.InvariantCulture;
// try once with then once without context
for (var context = new MyTypeDescriptorContext(); context != null; context = null)
{
object result;
Assert.Equal(',', culture.TextInfo.ListSeparator[0]);
AssertExtensions.Throws <ArgumentException, Exception>(() => mc.ConvertFrom(context, culture, "1;2;3;4"));
result = mc.ConvertFrom(context, culture, "1,2,3,4");
Assert.IsType <Margins>(result);
Margins margins = result as Margins;
Assert.Equal(1, margins.Left);
Assert.Equal(2, margins.Right);
Assert.Equal(3, margins.Top);
Assert.Equal(4, margins.Bottom);
}
}
