tests/DotNetCommon.Test/Accessors/AccessorPropertyTests.cs

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namespace DotNetCommon.Test.Accessors
{
    using System;
    using System.Reflection;
    using DotNetCommon.Accessors;
    using NUnit.Framework;
    using Shouldly;
    using DotNetCommon.Extensions;

    [TestFixture]
    public class AccessorPropertyTests
    {
        [Test]
        public void When_checking_invalid_input()
        {
            string nullStr = null;
            PropertyInfo nullPropInfo = null;

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildSetter<Person, string>(nullStr))
                .Message.ShouldBe("String must not be null, empty or whitespace.");

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildSetter<Person, string>(nullPropInfo))
                .Message.ShouldBe("Value cannot be null. (Parameter 'propertyInfo')");

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildGetter<Person, string>(nullStr))
                .Message.ShouldBe("String must not be null, empty or whitespace.");

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildGetter<Person, string>(nullPropInfo))
                .Message.ShouldBe("Value cannot be null. (Parameter 'propertyInfo')");

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildSetter<Person>(nullStr))
                .Message.ShouldBe("String must not be null, empty or whitespace.");

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildSetter<Person>(nullPropInfo))
                .Message.ShouldBe("Value cannot be null. (Parameter 'propertyInfo')");

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildGetter<Person>(nullStr))
                .Message.ShouldBe("String must not be null, empty or whitespace.");

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildGetter<Person>(nullPropInfo))
                .Message.ShouldBe("Value cannot be null. (Parameter 'propertyInfo')");

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildSetter(nullPropInfo))
                .Message.ShouldBe("Value cannot be null. (Parameter 'propertyInfo')");

            Should.Throw<ArgumentException>(() => AccessorBuilder.BuildGetter(nullPropInfo))
                .Message.ShouldBe("Value cannot be null. (Parameter 'propertyInfo')");
        }

        [Test]
        public void When_getting_getters_class()
        {
            var nameGetterOne = AccessorBuilder.BuildGetter<Person, string>("Name");
            var nameGetterTwo = AccessorBuilder.BuildGetter<Person, string>("Name");

            nameGetterOne.ShouldNotBeSameAs(nameGetterTwo);

            var jobGetter = AccessorBuilder.BuildGetter<Person, string>("Job", true);

            jobGetter.ShouldNotBe(nameGetterOne);