public void ConvertTo_ReturnsDefaultForValueTypes_WhenValueIsNull()
{
var valueProviderResult = new ValueProviderResult(null, null, CultureInfo.InvariantCulture);
var convertedValue = valueProviderResult.ConvertTo(typeof(int));
Assert.Equal(0, convertedValue);
}
public void ConvertTo_ReturnsNullForReferenceTypes_WhenValueIsNull()
{
var valueProviderResult = new ValueProviderResult(null, null, CultureInfo.InvariantCulture);
var convertedValue = valueProviderResult.ConvertTo(typeof(string));
Assert.Equal(null, convertedValue);
}
public void ConvertTo_PopulatesArray_WhenSingleNeedsToBeConvertedToArray()
{
// Arrange
var valueProviderResult = new ValueProviderResult(DayOfWeek.Friday, "It's Friday!", CultureInfo.InvariantCulture);
// Act
var convertedValue = (DayOfWeek[])valueProviderResult.ConvertTo(typeof(DayOfWeek[]));
// Assert
Assert.Single(convertedValue, DayOfWeek.Friday);
}
public void ConvertTo_PopulatesArray_WhenSourceArrayNeedsToBeConvertedToArray()
{
// Arrange
string[] values = new[] { "3", "2", "1" };
var valueProviderResult = new ValueProviderResult(values, values.ToString(), CultureInfo.InvariantCulture);
// Act
var convertedValue = valueProviderResult.ConvertTo(typeof(int[]));
// Assert
Assert.Equal(new[] { 3, 2, 1 }, convertedValue);
}
public void ConvertTo_PopulatesArray_WhenListNeedsToBeConvertedToArray()
{
// Arrange
List<string> values = new List<string> { "-1", "0", "1" };
var valueProviderResult = new ValueProviderResult(values, values.ToString(), CultureInfo.InvariantCulture);
// Act
var convertedValue = valueProviderResult.ConvertTo(typeof(int[]));
// Assert
Assert.IsType<int[]>(convertedValue);
Assert.Equal(new[] { -1, 0, 1 }, convertedValue);
}
static void Main(string[] args)
{
ValueProviderResult result1 = new ValueProviderResult(new string[] { "1", "2", "3" }, "", null);
ValueProviderResult result2 = new ValueProviderResult("123", "", null);
//string[] => int[]
int[] value1 = (int[])result1.ConvertTo(typeof(int[]));
//string[] => int
int value2 = (int)result1.ConvertTo(typeof(int));
//string => int[]
int[] value3 = (int[])result2.ConvertTo(typeof(int[]));
Console.WriteLine("{0,-16}{1}", "RawValue", "NewValue");
Console.WriteLine("{0,-16}{1}", result1.RawValue.ConvertToString(), value1.ConvertToString());
Console.WriteLine("{0,-16}{1}", result1.RawValue.ConvertToString(), value2.ConvertToString());
Console.WriteLine("{0,-16}{1}", result2.RawValue.ConvertToString(), value3.ConvertToString());
}
public void ConvertTo_ReturnsFirstValue_WhenSequenceNeedsToConvertedToSingleValue(IList value, object expected)
{
// Arrange
var valueProviderResult = new ValueProviderResult(value, value.ToString(), CultureInfo.InvariantCulture);
// Act
var convertedValue = valueProviderResult.ConvertTo(expected.GetType());
// Assert
Assert.Equal(expected, convertedValue);
}