public void DistinctModelsProduceDistinctHashCodesAndNonEquality()
{
// Arrange
var fieldIdentifier1 = new FieldIdentifier(new object(), "field");
var fieldIdentifier2 = new FieldIdentifier(new object(), "field");
// Act/Assert
Assert.NotEqual(fieldIdentifier1.GetHashCode(), fieldIdentifier2.GetHashCode());
Assert.False(fieldIdentifier1.Equals(fieldIdentifier2));
}
public void SameContentsProduceSameHashCodesAndEquality()
{
// Arrange
var model = new object();
var fieldIdentifier1 = new FieldIdentifier(model, "field");
var fieldIdentifier2 = new FieldIdentifier(model, "field");
// Act/Assert
Assert.Equal(fieldIdentifier1.GetHashCode(), fieldIdentifier2.GetHashCode());
Assert.True(fieldIdentifier1.Equals(fieldIdentifier2));
}
public void FieldIdentifier_ForModelWithoutField_ProduceSameHashCodesAndEquality()
{
// Arrange
var model = new object();
var fieldIdentifier1 = new FieldIdentifier(model, fieldName: string.Empty);
var fieldIdentifier2 = new FieldIdentifier(model, fieldName: string.Empty);
// Act/Assert
Assert.Equal(fieldIdentifier1.GetHashCode(), fieldIdentifier2.GetHashCode());
Assert.True(fieldIdentifier1.Equals(fieldIdentifier2));
}
public void FieldNamesAreCaseSensitive()
{
// Arrange
var model = new object();
var fieldIdentifierLower = new FieldIdentifier(model, "field");
var fieldIdentifierPascal = new FieldIdentifier(model, "Field");
// Act/Assert
Assert.Equal("field", fieldIdentifierLower.FieldName);
Assert.Equal("Field", fieldIdentifierPascal.FieldName);
Assert.NotEqual(fieldIdentifierLower.GetHashCode(), fieldIdentifierPascal.GetHashCode());
Assert.False(fieldIdentifierLower.Equals(fieldIdentifierPascal));
}
public void SameContents_WithOverridenEqualsAndGetHashCode_ProduceSameHashCodesAndEquality()
{
// Arrange
var model = new EquatableModel();
var fieldIdentifier1 = new FieldIdentifier(model, nameof(EquatableModel.Property));
model.Property = "changed value"; // To show it makes no difference if the overridden `GetHashCode` result changes
var fieldIdentifier2 = new FieldIdentifier(model, nameof(EquatableModel.Property));
// Act/Assert
Assert.Equal(fieldIdentifier1.GetHashCode(), fieldIdentifier2.GetHashCode());
Assert.True(fieldIdentifier1.Equals(fieldIdentifier2));
}
