Яценко Ирина

ObjectPrinting/PrintingConfig.cs

@@ -1,40 +1,156 @@
 using System;
+using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
+using System.Linq.Expressions;
+using System.Reflection;
 using System.Text;
 
 namespace ObjectPrinting
 {
     public class PrintingConfig<TOwner>
     {
+        private readonly List<MemberInfo> exludedProperties = new List<MemberInfo>();
+        private readonly List<Type> excludedTypes = new List<Type>();
+        private readonly Dictionary<object, int> complexObjectLinks = new Dictionary<object, int>();
+        private int maxRecursion = 2;
+
+        private readonly Type[] finalTypes =
+        {
+            typeof(int), typeof(double), typeof(float), typeof(string), typeof(DateTime), typeof(TimeSpan), typeof(Guid)
+        };
+
+        private readonly Dictionary<Type, Func<object, string>> typeSerializesInfos =
+            new Dictionary<Type, Func<object, string>>();
+
+        private readonly Dictionary<MemberInfo, Func<object, string>> membersSerializesInfos =
+            new Dictionary<MemberInfo, Func<object, string>>();
+
+
         public string PrintToString(TOwner obj)
         {
             return PrintToString(obj, 0);
         }
 
+        public PrintingConfig<TOwner> WithMaxRecursion(int maxRecursion)
+        {
+            if (maxRecursion < 1)
+                throw new ArgumentException();
+            this.maxRecursion = maxRecursion;
+
+            return this;
+        }
+
+        public PrintingConfig<TOwner> Exclude<TResult>(Expression<Func<TOwner, TResult>> exclude)
+        {
+            var memberInfo = GetMemberInfo(exclude);
+
+            exludedProperties.Add(memberInfo);
+
+            return this;
+        }
+
+        public PrintingConfig<TOwner> SetCulture<T>(CultureInfo culture)
+            where T : IFormattable
+        {
+            return SerializeWith<T>(
+                p => p.ToString(null, culture));
+        }
+
+        public PrintingConfig<TOwner> SerializeWith<T>(Func<T, string> serialize)
+        {
+            Func<object, string> func = p => serialize((T)p);
+
+            typeSerializesInfos[typeof(T)] = func;
+
+            return this;
+        }
+
+        public PrintingConfig<TOwner> SerializeWith<T>(
+            Expression<Func<TOwner, T>> property,
+            Func<T, string> serialize)
+        {
+            var memberInfo = GetMemberInfo(property);
+            Func<object, string> func = p => serialize((T)p);
+
+            membersSerializesInfos[memberInfo] = func;
+
+            return this;
+        }
+
+        private MemberInfo GetMemberInfo<T>(Expression<Func<TOwner, T>> expression)
+        {
+            var memberExpression = expression.Body is UnaryExpression unaryExpression
+                ? (MemberExpression)unaryExpression.Operand
+                : (MemberExpression)expression.Body;
+
+            return memberExpression.Member;
+        }
+
+        public PrintingConfig<TOwner> Trim(Expression<Func<TOwner, string>> property, int length)
+        {
+            Func<string, string> func = value => value.Length <= length
+                ? value
+                : value.Substring(0, length);
+
+            return SerializeWith(property, func);
+        }
+
+        public PrintingConfig<TOwner> Exclude<T>()
+        {
+            excludedTypes.Add(typeof(T));
+
+            return this;
+        }
+
         private string PrintToString(object obj, int nestingLevel)
         {
-            //TODO apply configurations
             if (obj == null)
                 return "null" + Environment.NewLine;
 
-            var finalTypes = new[]
-            {
-                typeof(int), typeof(double), typeof(float), typeof(string),
-                typeof(DateTime), typeof(TimeSpan)
-            };
             if (finalTypes.Contains(obj.GetType()))
                 return obj + Environment.NewLine;
 
+            if (!complexObjectLinks.ContainsKey(obj))
+                complexObjectLinks[obj] = 0;
+            complexObjectLinks[obj]++;
+
+            if (complexObjectLinks[obj] == maxRecursion)
+                return "Maximum recursion has been reached" + Environment.NewLine;
+
             var identation = new string('\t', nestingLevel + 1);
+
             var sb = new StringBuilder();
             var type = obj.GetType();
             sb.AppendLine(type.Name);
+
             foreach (var propertyInfo in type.GetProperties())
             {
+                if (exludedProperties.Any(m => m.Name == propertyInfo.Name) ||
+                    excludedTypes.Contains(propertyInfo.PropertyType))
+                    continue;
+
+                if (membersSerializesInfos.TryGetValue(propertyInfo, out var serializeMember))
+                {
+                    var t = serializeMember(propertyInfo.GetValue(obj));
+
+                    sb.Append(identation + propertyInfo.Name + " = " + t + Environment.NewLine);
+                    continue;
+                }
+
+                if (typeSerializesInfos.TryGetValue(propertyInfo.PropertyType, out var serializeType))
+                {
+                    var t = serializeType(propertyInfo.GetValue(obj));
+
+                    sb.Append(identation + propertyInfo.Name + " = " + t + Environment.NewLine);
+                    continue;
+                }
+
                 sb.Append(identation + propertyInfo.Name + " = " +
                           PrintToString(propertyInfo.GetValue(obj),
                               nestingLevel + 1));
             }
+
             return sb.ToString();
         }
     }

ObjectPrintingTests/ObjectPrinterAcceptanceTests.cs

@@ -0,0 +1,104 @@
+using System.Globalization;
+using FluentAssertions;
+using NUnit.Framework;
+using ObjectPrinting;
+using ObjectPrinting.Tests;
+
+namespace ObjectPrintingTests
+{
+    [TestFixture]
+    public class ObjectPrinterAcceptanceTests
+    {
+        [Test]
+        public void WhenExcludeType_ShouldReturnWithoutThisType()
+        {
+            var person = new Person { Name = "Alex", Age = 19 };
+
+            var printer = ObjectPrinter.For<Person>();
+            printer.Exclude(p => p.Age)
+                .Exclude<double>();
+
+            //1. Исключить из сериализации свойства определенного типа
+            //2. Указать альтернативный способ сериализации для определенного типа
+            //3. Для числовых типов указать культуру
+            //4. Настроить сериализацию конкретного свойства
+            //5. Настроить обрезание строковых свойств (метод должен быть виден только для строковых свойств)
+            //6. Исключить из сериализации конкретного свойства
+
+            var s1 = printer.PrintToString(person);
+            s1.Should().Be(
+                "Person\r\n\tId = 00000000-0000-0000-0000-000000000000\r\n\tName = Alex\r\n\tSubPerson = null\r\n");
+
+            //7. Синтаксический сахар в виде метода расширения, сериализующего по-умолчанию        
+            //8. ...с конфигурированием
+        }
+
+        [Test]
+        public void TrimString_ShouldReturnSubstring()
+        {
+            var person = new Person { Name = "Petr", Age = 20, Height = 180 };
+            var printer = ObjectPrinter.For<Person>();
+
+            var s1 = printer.Trim(p => p.Name, 1).PrintToString(person);
+
+            s1.Should().Be(
+                "Person\r\n\tId = 00000000-0000-0000-0000-000000000000\r\n\tName = P\r\n\tHeight = 180\r\n\tAge = 20\r\n\tSubPerson = null\r\n");
+        }
+
+        [Test]
+        public void ShouldSerializeMember_WithGivenFunc()
+        {
+            var person = new Person { Name = "Petr", Age = 20, Height = 180 };
+            var printer = ObjectPrinter.For<Person>();
+
+            var s1 = printer.SerializeWith(person => person.Age, age => (age + 1000).ToString()).PrintToString(person);
+
+            s1.Should().Be(
+                "Person\r\n\tId = 00000000-0000-0000-0000-000000000000\r\n\tName = Petr\r\n\tHeight = 180\r\n\tAge = 1020\r\n\tSubPerson = null\r\n");
+        }
+
+        [Test]
+        public void SetCulture_ShouldAddedCultureInfo()
+        {
+            var person = new Person { Name = "Petr", Age = 20, Height = 180.5 };
+            var printer = ObjectPrinter.For<Person>();
+
+            var s1 = printer.SetCulture<double>(CultureInfo.InvariantCulture).PrintToString(person);
+
+            s1.Should().Be(
+                "Person\r\n\tId = 00000000-0000-0000-0000-000000000000\r\n\tName = Petr\r\n\tHeight = 180.5\r\n\tAge = 20\r\n\tSubPerson = null\r\n");
+        }
+
+        [Test]
+        public void WhenCyclicLinksWasFound_ShouldPrintWithRecursionLimit()
+        {
+            var person = new Person { Name = "Petr", Age = 20, Height = 180, SubPerson = new SubPerson() };
+            person.SubPerson.Age = 15;
+            person.SubPerson.Person = person;
+            var printer = ObjectPrinter.For<Person>();
+
+            var s1 = printer.PrintToString(person);
+
+            s1.Should().Be(
+                "Person\r\n\tId = 00000000-0000-0000-0000-000000000000\r\n\tName = Petr\r\n\tHeight = 180\r\n\tAge = 20\r\n\tSubPerson = SubPerson\r\n\t\tPerson = Maximum recursion has been reached\r\n\t\tAge = 15\r\n");
+        }
+
+        [Test]
+        public void WhenPassNull_ShouldReturnNullString()
+        {
+            var printer = ObjectPrinter.For<Person>();
+            var s1 = printer.PrintToString(null);
+
+            s1.Should().Be("null\r\n");
+        }
+
+        [Test]
+        public void WhenPassFinalType_ShouldReturnStringRepresentationOfThisType()
+        {
+            var printer = ObjectPrinter.For<int>();
+            var s1 = printer.PrintToString(1);
+
+            s1.Should().Be("1\r\n");
+        }
+    }
+}

ObjectPrintingTests/ObjectPrintingTests.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="FluentAssertions" Version="6.12.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+    <PackageReference Include="NUnit" Version="3.13.3" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.3.0" />
+    <PackageReference Include="NUnit.Analyzers" Version="3.5.0" />
+    <PackageReference Include="coverlet.collector" Version="3.1.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ObjectPrinting\ObjectPrinting.csproj" />
+  </ItemGroup>
+
+</Project>

ObjectPrinting/Tests/Person.cs → ObjectPrintingTests/Person.cs

@@ -8,5 +8,6 @@ public class Person
         public string Name { get; set; }
         public double Height { get; set; }
         public int Age { get; set; }
+        public SubPerson SubPerson { get; set; }
     }
 }

ObjectPrintingTests/SubPerson.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace ObjectPrinting.Tests
+{
+    public class SubPerson
+    {
+        public Person Person { get; set; }
+
+        public int Age { get; set; }
+    }
+}

fluent-api.sln

@@ -1,17 +1,19 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 14
-VisualStudioVersion = 14.0.25123.0
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34330.188
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ObjectPrinting", "ObjectPrinting\ObjectPrinting.csproj", "{07B8C9B7-8289-46CB-9875-048A57758EEE}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ObjectPrinting", "ObjectPrinting\ObjectPrinting.csproj", "{07B8C9B7-8289-46CB-9875-048A57758EEE}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Samples", "Samples", "{6D308E4A-CEC7-4536-9B87-81CD337A87AD}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FluentMapping", "Samples\FluentMapper\FluentMapping.csproj", "{FEEA5AFE-459A-4D13-81D0-252E1A2E6F4E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FluentMapping", "Samples\FluentMapper\FluentMapping.csproj", "{FEEA5AFE-459A-4D13-81D0-252E1A2E6F4E}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FluentMapping.Tests", "Samples\FluentMapper.Tests\FluentMapping.Tests.csproj", "{8A7BB3EA-3E6A-4D04-A801-D5CD1620DA0D}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FluentMapping.Tests", "Samples\FluentMapper.Tests\FluentMapping.Tests.csproj", "{8A7BB3EA-3E6A-4D04-A801-D5CD1620DA0D}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Spectacle", "Samples\Spectacle\Spectacle.csproj", "{EFA9335C-411B-4597-B0B6-5438D1AE04C3}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Spectacle", "Samples\Spectacle\Spectacle.csproj", "{EFA9335C-411B-4597-B0B6-5438D1AE04C3}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ObjectPrintingTests", "ObjectPrintingTests\ObjectPrintingTests.csproj", "{D4C55796-285B-43A6-B0C8-CCAFD9311A7E}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -35,6 +37,10 @@ Global
 		{EFA9335C-411B-4597-B0B6-5438D1AE04C3}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{EFA9335C-411B-4597-B0B6-5438D1AE04C3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{EFA9335C-411B-4597-B0B6-5438D1AE04C3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D4C55796-285B-43A6-B0C8-CCAFD9311A7E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D4C55796-285B-43A6-B0C8-CCAFD9311A7E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D4C55796-285B-43A6-B0C8-CCAFD9311A7E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D4C55796-285B-43A6-B0C8-CCAFD9311A7E}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -44,4 +50,7 @@ Global
 		{8A7BB3EA-3E6A-4D04-A801-D5CD1620DA0D} = {6D308E4A-CEC7-4536-9B87-81CD337A87AD}
 		{EFA9335C-411B-4597-B0B6-5438D1AE04C3} = {6D308E4A-CEC7-4536-9B87-81CD337A87AD}
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A5E3DAB2-51C4-45F2-8C29-BD9CE58F6479}
+	EndGlobalSection
 EndGlobal