public void FindAllBaseTypesReturnsCorrect()
{
// Arrange
IEdmEntityType baseEntityType = new EdmEntityType("NS", "Base");
IEdmEntityType subEntityType = new EdmEntityType("NS", "Sub", baseEntityType);
IEdmEntityType subSubEntityType = new EdmEntityType("NS", "SubSub", subEntityType);
// 1. Act & Assert
var baseTypes = baseEntityType.FindAllBaseTypes();
Assert.Empty(baseTypes);
// 2. Act & Assert
baseTypes = subEntityType.FindAllBaseTypes();
Assert.NotNull(baseTypes);
var baseType = Assert.Single(baseTypes);
Assert.Same(baseType, baseEntityType);
// 3. Act & Assert
baseTypes = subSubEntityType.FindAllBaseTypes();
Assert.NotNull(baseTypes);
Assert.Equal(2, baseTypes.Count());
Assert.Equal(new[] { subEntityType, baseEntityType }, baseTypes);
}