public void ShouldPassWhenAllExpectedPropertiesChange()
{
// arrange
var assert = new Asserter();
var subject = new Person();
var expected = "Bob";
// act, asssert (expect setting FirstName also raises event for FullName)
assert.PropertyChanged(subject, p => p.FirstName, expected, p => p.FullName);
}
public void ShouldPassWhenOnlyOnePropertyChangeIsExpected()
{
// arrange
var assert = new Asserter();
var subject = new Person();
var expected = 123;
// act, assert
assert.PropertyChanged(subject, p => p.Id, expected);
}
public void PropertyChangedShouldAssertNullObject()
{
// arrange
var assert = new Asserter();
var subject = default(Person);
try
{
// act
assert.PropertyChanged(subject, p => p.FirstName, string.Empty);
}
catch (AssertFailedException ex)
{
// assert
Assert.AreEqual(GetExpectedMessage(nameof(subject)), ex.Message);
return;
}
Assert.Fail("An exception was expected, but not thrown.");
}
public void ShouldFailWhenSomeOfTheExpectedPropertiesDoNotChange()
{
// assert
var assert = new Asserter();
var subject = new Person();
var expected = "Bob";
try
{
// act (expect FirstName and FullName, but not LastName)
assert.PropertyChanged(subject, p => p.FirstName, expected, p => p.FullName, p => p.LastName);
}
catch (AssertFailedException)
{
// assert
return;
}
Assert.Fail("An exception was expected, but not thrown.");
}
public void ShouldFailWhenOnePropertyPropertyChangeIsExpectedButMultiplePropertiesChange()
{
// arrange
var assert = new Asserter();
var subject = new Person();
var expected = "Bob";
try
{
// act (setting the FirstName property also raises FullName property change, but is not expected)
assert.PropertyChanged(subject, p => p.FirstName, expected);
}
catch (AssertFailedException)
{
// assert
return;
}
Assert.Fail("An exception was expected, but not thrown.");
}
public void PropertyChangedShouldAssertNullOtherPropertyExpressions()
{
// arrange
var assert = new Asserter();
var subject = new Person();
var otherProperties = default(Expression <Func <Person, object> >[]);
try
{
// act
assert.PropertyChanged(subject, p => p.FirstName, string.Empty, otherProperties);
}
catch (AssertFailedException ex)
{
// assert
Assert.AreEqual(GetExpectedMessage(nameof(otherProperties)), ex.Message);
return;
}
Assert.Fail("An exception was expected, but not thrown.");
}
public void PropertyChangedShouldAssertNullPropertyExpression()
{
// arrange
var assert = new Asserter();
var subject = new Person();
var testProperty = default(Expression <Func <Person, string> >);
try
{
// act
assert.PropertyChanged(subject, testProperty, string.Empty);
}
catch (AssertFailedException ex)
{
// assert
Assert.AreEqual(GetExpectedMessage(nameof(testProperty)), ex.Message);
return;
}
Assert.Fail("An exception was expected, but not thrown.");
}
