public void Adding_method_fluent_only_convention_defaults_property_call_throws()
{
var modelBuilder = GetModelBuilder();
Expression <Func <int> > expression = () => TestMethods.Foo;
Assert.Equal(
RelationalStrings.DbFunctionExpressionIsNotMethodCall(expression),
Assert.Throws <ArgumentException>(() => modelBuilder.HasDbFunction(expression)).Message);
}
/// <summary>
/// Configures a database function when targeting a relational database.
/// </summary>
/// <param name="modelBuilder"> The model builder. </param>
/// <param name="expression"> The method this dbFunction uses. </param>
/// <returns> A builder to further configure the function. </returns>
public static DbFunctionBuilder HasDbFunction <TResult>(
[NotNull] this ModelBuilder modelBuilder,
[NotNull] Expression <Func <TResult> > expression)
{
Check.NotNull(modelBuilder, nameof(modelBuilder));
Check.NotNull(expression, nameof(expression));
var methodInfo = (expression.Body as MethodCallExpression)?.Method;
if (methodInfo == null)
{
throw new ArgumentException(RelationalStrings.DbFunctionExpressionIsNotMethodCall(expression));
}
return(modelBuilder.HasDbFunction(methodInfo));
}