FunctionBuildTests.cs

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// 
//  Copyright 2010-2014 Deveel
// 
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
// 
//        http://www.apache.org/licenses/LICENSE-2.0
// 
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
using System;

using Deveel.Data;
using Deveel.Data.Sql.Fluid;
using Deveel.Data.Sql.Objects;
using Deveel.Data.Types;

using NUnit.Framework;

namespace Deveel.Data.Routines {
    [TestFixture]
    public class FunctionBuildTests : ContextBasedTest {
        [Test]
        public void ScalarWithNoArguments() {
            FunctionProvider factory1 = null;
            Assert.DoesNotThrow(() => factory1 = new Factory1());

            IFunction function = null;
            Assert.DoesNotThrow(() => function = factory1.ResolveFunction("user2"));
            Assert.IsNotNull(function);

            InvokeResult result=null;
            Assert.DoesNotThrow(() => result = function.Execute(Query));
            Assert.IsNotNull(result);
            Assert.AreEqual(AdminUserName, result.ReturnValue.Value.ToString());
        }

        [Test]
        public void ScalarWithTwoArgument() {
            Factory2 factory2 = null;
            Assert.DoesNotThrow(() => factory2 = new Factory2());

            IFunction function = null;
            var args = new DataObject[] {DataObject.BigInt(2), DataObject.Number(new SqlNumber(54))};
            Assert.DoesNotThrow(() => function = factory2.ResolveFunction("add2", args));
            Assert.IsNotNull(function);

            InvokeResult result = null;
            Assert.DoesNotThrow(() => result = function.Execute(args));
            Assert.IsNotNull(result);

            Assert.IsInstanceOf<SqlNumber>(result.ReturnValue.Value);

            var value = ((SqlNumber) result.ReturnValue.Value).ToInt64();
            Assert.AreEqual(56, value);
        }

        #region Factory1

        class Factory1 : FunctionProvider {
            public override string SchemaName {
                get { return "APP"; }
            }

            protected override void OnInit() {
                Register(config => config.Named("user2")
                    .ReturnsType(PrimitiveTypes.String())
                    .WhenExecute(context => context.Result(DataObject.String(context.Request.User().Name))));
            }
        }

        #endregion

        #region Factory2

        class Factory2 : FunctionProvider {
            public override string SchemaName {
                get { return "APP"; }
            }

            protected override void OnInit() {
                Register(config => config.Named("add2")
                    .WithNumericParameter("a")
                    .WithNumericParameter("b")
                    .ReturnsNumeric()
                    .WhenExecute(context => {
                        var a = context.EvaluatedArguments[0];
                        var b = context.EvaluatedArguments[1];
                        return context.Result(a.Add(b));
                    }));
            }
        }

        #endregion
    }
}