/// <summary>
/// Initializes a new instance of the <see cref="ObservableValidation{TViewModel,TValue,TProp}"/> class.
/// </summary>
/// <param name="viewModel">ViewModel instance.</param>
/// <param name="viewModelProperty">ViewModel property.</param>
/// <param name="observable">Observable that updates the view model property validity.</param>
/// <param name="isValidFunc">Func to define if the viewModelProperty is valid or not.</param>
/// <param name="messageFunc">Func to define the validation error message.</param>
public ObservableValidation(
TViewModel viewModel,
Expression <Func <TViewModel, TProp> > viewModelProperty,
IObservable <TValue> observable,
Func <TViewModel, TValue, bool> isValidFunc,
Func <TViewModel, TValue, bool, string> messageFunc)
: base(viewModel, observable, isValidFunc, (vm, value, isValid) =>
ValidationText.Create(messageFunc(vm, value, isValid))) =>
/// <summary>
/// Initializes a new instance of the <see cref="ModelObservableValidation{TViewModel, TProperty1}"/> class.
/// </summary>
/// <param name="viewModel">ViewModel instance.</param>
/// <param name="viewModelProperty">ViewModel property referenced in validityObservable.</param>
/// <param name="validityObservable">Observable to define if the viewModel is valid or not.</param>
/// <param name="message">Func to define the validation error message based on the viewModelProperty value.</param>
public ModelObservableValidation(
TViewModel viewModel,
Expression <Func <TViewModel, TViewModelProp> > viewModelProperty,
Func <TViewModel, IObservable <bool> > validityObservable,
Func <TViewModel, string> message)
: this(viewModel, viewModelProperty, validityObservable, (p, isValid) =>
isValid ? ValidationText.Empty : ValidationText.Create(message(p)))
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ModelObservableValidation{TViewModel, TProperty1}"/> class.
/// </summary>
/// <param name="viewModel">ViewModel instance.</param>
/// <param name="viewModelProperty">ViewModel property referenced in validityObservable.</param>
/// <param name="validityObservable">Observable to define if the viewModel is valid or not.</param>
/// <param name="messageFunc">Func to define the validation error message based on the viewModel and validityObservable values.</param>
public ModelObservableValidation(
TViewModel viewModel,
Expression <Func <TViewModel, TViewModelProp> > viewModelProperty,
Func <TViewModel, IObservable <bool> > validityObservable,
Func <TViewModel, bool, string> messageFunc)
: this(viewModel, viewModelProperty, validityObservable, (vm, state) =>
ValidationText.Create(messageFunc(vm, state)))
{
}
public void CombineValidationTextEmptyReturnsTwoEmpty()
{
ValidationText vt = ValidationText.Create(new[] { ValidationText.Empty, ValidationText.Empty });
Assert.NotSame(ValidationText.Empty, vt);
Assert.Equal(2, vt.Count);
// Calling Count() checks the enumeration returns no results, unlike the Count property.
#pragma warning disable CA1829 // Use Length/Count property instead of Count() when available
Assert.Equal(2, vt.Count());
#pragma warning restore CA1829 // Use Length/Count property instead of Count() when available
Assert.Equal(string.Empty, vt[0]);
Assert.Equal(string.Empty, vt[1]);
Assert.Equal("|", vt.ToSingleLine("|"));
}
public void CreateEmptyValidationTextEnumerableReturnsNone()
{
ValidationText vt = ValidationText.Create(Array.Empty <ValidationText>());
Assert.Same(ValidationText.None, vt);
}
public void CreateEmptyStringEnumerableReturnsNone()
{
ValidationText vt = ValidationText.Create((IEnumerable <string>)Array.Empty <string>());
Assert.Same(ValidationText.None, vt);
}
public void ParameterlessCreateReturnsNone()
{
ValidationText vt = ValidationText.Create();
Assert.Same(ValidationText.None, vt);
}
public void CombineValidationTextEmptyAndNoneReturnsEmpty()
{
ValidationText vt = ValidationText.Create(new[] { ValidationText.None, ValidationText.Empty });
Assert.Same(ValidationText.Empty, vt);
}
/// <summary>
/// Initializes a new instance of the <see cref="ValidationState"/> class.
/// </summary>
/// <param name="isValid">Determines if the property is valid or not.</param>
/// <param name="text">Validation text.</param>
public ValidationState(bool isValid, string text)
: this(isValid, ValidationText.Create(text))
{
}
public void CreateSingleStringEmptyReturnsEmpty()
{
ValidationText vt = ValidationText.Create((IEnumerable <string>) new[] { string.Empty });
Assert.Same(ValidationText.Empty, vt);
}
public void CreateStringEmptyReturnsEmpty()
{
ValidationText vt = ValidationText.Create(string.Empty);
Assert.Same(ValidationText.Empty, vt);
}
public void CreateNoneItemStringEnumerableReturnsNone()
{
ValidationText vt = ValidationText.Create(ValidationText.None);
Assert.Same(ValidationText.None, vt);
}
public void CreateNoneItemValidationTextEnumerableReturnsNone()
{
ValidationText vt = ValidationText.Create(new[] { ValidationText.None });
Assert.Same(ValidationText.None, vt);
}
public void CreateNullItemStringEnumerableReturnsNone()
{
ValidationText vt = ValidationText.Create((IEnumerable <string>) new string[] { null });
Assert.Same(ValidationText.None, vt);
}
public void CreateNullValidationTextEnumerableReturnsNone()
{
ValidationText vt = ValidationText.Create((IEnumerable <ValidationText>)null);
Assert.Same(ValidationText.None, vt);
}
public void CreateNullReturnsNone()
{
ValidationText vt = ValidationText.Create((string)null);
Assert.Same(ValidationText.None, vt);
}
public void CreateValidationTextEmptyReturnsEmpty()
{
ValidationText vt = ValidationText.Create(new[] { ValidationText.Empty });
Assert.Same(ValidationText.Empty, vt);
}
public void CombineValidationTextNoneReturnsNone()
{
ValidationText vt = ValidationText.Create(new[] { ValidationText.None, ValidationText.None });
Assert.Same(ValidationText.None, vt);
}
public ValidationState(bool isValid, string text, IValidationComponent component)
: this(isValid, ValidationText.Create(text), component)
{
}
public CustomValidationState(bool isValid, string message)
{
IsValid = isValid;
Text = isValid ? ValidationText.Empty : ValidationText.Create(message);
}