Feature - Screen Diff wrapper

src/allure-nunit-tests/AllureDiffTest.cs

@@ -0,0 +1,35 @@
+using Allure.Commons;
+using NUnit.Allure.Attributes;
+using NUnit.Framework;
+using NUnit.Allure.Core;
+
+namespace allure_nunit_tests
+{
+    [AllureSuite("Tests - ScreenDiff")]
+    public class AllureDiffTest : BaseTest
+    {
+        [Test]
+        [AllureName("Simple test with diff")]
+        public void DiffTest()
+        {
+            AddDiffs();
+        }
+
+        [Test]
+        [AllureName("Diff test with step")]
+        public void DiffStepsTest()
+        {
+            AddDiffs();
+            AllureLifecycle.Instance.WrapInStep(() =>
+            {
+                AllureLifecycle.Instance.WrapInStep(() => { AddDiffs(); }, "Step Inside");
+                AddDiffs();
+            }, "StepOutSide");
+        }
+
+        public static void AddDiffs()
+        {
+            AllureLifecycle.Instance.AddScreenDiff("logo.png", "logo.png", "logo.png");
+        }
+    }
+}

src/allure-nunit-tests/allure-nunit-tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <RootNamespace>allure_nunit_tests</RootNamespace>
     <IsPackable>false</IsPackable>
     <OutputType>Library</OutputType>

src/allure-nunit/Core/AllureExtensions.cs

@@ -1,7 +1,9 @@
 using System;
+using System.Reflection;
 using System.Runtime.CompilerServices;
 using Allure.Commons;
 using NUnit.Framework.Internal;
+using System.Linq;
 
 namespace NUnit.Allure.Core
 {
@@ -110,5 +112,17 @@ public static T WrapInStep<T>(this AllureLifecycle lifecycle, Func<T> func, stri
                 throw;
             }
         }
+
+
+        /// <summary>
+        /// AllureNUnit AddScreenDiff wrapper method.
+        /// </summary>
+        public static void AddScreenDiff(this AllureLifecycle lifecycle, string expected, string actual, string diff)
+        {
+            var storageMain = lifecycle.GetType().GetField("storage", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(lifecycle);
+            var storageInternal = storageMain.GetType().GetField("storage", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(storageMain);
+            var keys = (storageInternal as System.Collections.Concurrent.ConcurrentDictionary<string, object>).Keys.ToList();
+            AllureLifecycle.Instance.AddScreenDiff(keys.Find(key => key.Contains("-tr-")), expected, actual, diff);
+        }
     }
 }

src/allure-nunit/allure-nunit.csproj

@@ -31,9 +31,11 @@
     <None Update="allureConfig.json">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
-    <None Include="..\..\logo.png" Pack="true" PackagePath="\"/>
-    <None Include="..\..\LICENSE.md" Pack="true" PackagePath="\"/>
-    <None Include="..\..\README.md" Pack="true" PackagePath="\"/>
+    <None Include="..\..\logo.png" Pack="true" PackagePath="\">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Include="..\..\LICENSE.md" Pack="true" PackagePath="\" />
+    <None Include="..\..\README.md" Pack="true" PackagePath="\" />
   </ItemGroup>
 
 </Project>