public void SimpleDisplayTextForTypeWithWriteOnlyDisplayColumnThrows()
{
// Arrange
var provider = new CachedDataAnnotationsModelMetadataProvider();
// Act & Assert
Assert.Throws <InvalidOperationException>(
() => provider.GetMetadataForType(() => new WriteOnlyDisplayColumnModel(), typeof(WriteOnlyDisplayColumnModel)).SimpleDisplayText,
typeof(WriteOnlyDisplayColumnModel).FullName + " has a DisplayColumn attribute for WriteOnlyProperty, but property WriteOnlyProperty does not have a public getter.");
Assert.Throws <InvalidOperationException>(
() => provider.GetMetadataForType(() => new PrivateReadPublicWriteDisplayColumnModel(), typeof(PrivateReadPublicWriteDisplayColumnModel)).SimpleDisplayText,
typeof(PrivateReadPublicWriteDisplayColumnModel).FullName + " has a DisplayColumn attribute for PrivateReadPublicWriteProperty, but property PrivateReadPublicWriteProperty does not have a public getter.");
}
public void SimpleDisplayNameWithUnknownDisplayColumnThrows()
{
// Arrange
var provider = new CachedDataAnnotationsModelMetadataProvider();
// Act & Assert
Assert.Throws <InvalidOperationException>(
() => provider.GetMetadataForType(() => new UnknownDisplayColumnModel(), typeof(UnknownDisplayColumnModel)).SimpleDisplayText,
typeof(UnknownDisplayColumnModel).FullName + " has a DisplayColumn attribute for NoPropertyWithThisName, but property NoPropertyWithThisName does not exist.");
}
public void GetMetadataForTypeSetsTypeWithNullPropertyName()
{
// Arrange
var provider = new CachedDataAnnotationsModelMetadataProvider();
// Act
ModelMetadata result = provider.GetMetadataForType(null, typeof(string));
// Assert
Assert.Equal(typeof(string), result.ModelType);
Assert.Null(result.PropertyName);
}
public void SimpleDisplayTextForNonNullClassWithNullDisplayColumnValueRevertsToDefaultBehavior()
{
// Arrange
var provider = new CachedDataAnnotationsModelMetadataProvider();
var model = new SimpleDisplayTextAttributeModel();
var metadata = provider.GetMetadataForType(() => model, typeof(SimpleDisplayTextAttributeModel));
// Act
string result = metadata.SimpleDisplayText;
// Assert
Assert.Equal("42", result); // Falls back to the default logic of first property value
}
public void SimpleDisplayTextForNonNullClassWithNonNullDisplayColumnValue()
{
// Arrange
string expected = "Custom property display value";
var provider = new CachedDataAnnotationsModelMetadataProvider();
var model = new SimpleDisplayTextAttributeModel {
DisplayColumnProperty = expected
};
var metadata = provider.GetMetadataForType(() => model, typeof(SimpleDisplayTextAttributeModel));
// Act
string result = metadata.SimpleDisplayText;
// Assert
Assert.Equal(expected, result);
}