Multi-Language Support: Add UI Warning

Tests/SonarScanner.MSBuild.PostProcessor.Test/AnalysisWarningProcessorTests.cs

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+/*
+ * SonarScanner for .NET
+ * Copyright (C) 2016-2024 SonarSource SA
+ * mailto: info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+using System;
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using NSubstitute;
+using SonarScanner.MSBuild.Common;
+using TestUtilities;
+
+using static FluentAssertions.FluentActions;
+
+namespace SonarScanner.MSBuild.PostProcessor.Test;
+
+[TestClass]
+public class AnalysisWarningProcessorTests
+{
+    private readonly IFileWrapper fileWrapper = Substitute.For<IFileWrapper>();
+    private readonly TestLogger logger = new();
+
+    [TestMethod]
+    public void AnalysisWarningProcessor_Constructor()
+    {
+        Invoking(() => AnalysisWarningProcessor.Process(null, null, null, null)).Should()
+            .ThrowExactly<ArgumentNullException>().And.ParamName.Should().Be("warnings");
+
+        Invoking(() => AnalysisWarningProcessor.Process([], null, null, null)).Should()
+            .ThrowExactly<ArgumentNullException>().And.ParamName.Should().Be("outputPath");
+
+        Invoking(() => AnalysisWarningProcessor.Process([], string.Empty, null, null)).Should()
+            .ThrowExactly<ArgumentNullException>().And.ParamName.Should().Be("fileWrapper");
+
+        Invoking(() => AnalysisWarningProcessor.Process([], string.Empty, Substitute.For<IFileWrapper>(), null)).Should()
+            .ThrowExactly<ArgumentNullException>().And.ParamName.Should().Be("logger");
+    }
+
+    [TestMethod]
+    public void AnalysisWarningProcessor_Process_EmptyWarnings()
+    {
+        AnalysisWarningProcessor.Process([], string.Empty, fileWrapper, logger);
+
+        logger.AssertNoWarningsLogged();
+        fileWrapper.DidNotReceiveWithAnyArgs().WriteAllText(default, default);
+    }
+
+    [TestMethod]
+    public void AnalysisWarningProcessor_Process_MultipleWarnings()
+    {
+        AnalysisWarningProcessor.Process(["exploding", "whale"], string.Empty, fileWrapper, logger);
+
+        logger.Warnings.Should().BeEquivalentTo("exploding", "whale");
+        fileWrapper.Received(1).WriteAllText(string.Empty, """
+            [
+              {
+                "Text": "exploding"
+              },
+              {
+                "Text": "whale"
+              }
+            ]
+            """);
+    }
+}