Force license check in UTs

.editorconfig

@@ -227,9 +227,8 @@ dotnet_naming_style.I_style.capitalization = pascal_case
 # Rules
 # ----------------------------------------------------------------------------------------------------------------------
 
-# CS7035: it expects the build number to fit in 16 bits, our build numbers are bigger https://github.com/dotnet/roslyn/issues/17024#issuecomment-1669503201
-dotnet_diagnostic.CS7035.severity = none
-
+dotnet_diagnostic.S1451.severity = warning  # Force activation of license header check for UTs
+dotnet_diagnostic.CS7035.severity = none    # CS7035: it expects the build number to fit in 16 bits, our build numbers are bigger https://github.com/dotnet/roslyn/issues/17024#issuecomment-1669503201
 dotnet_diagnostic.CA1822.severity = warning # Increase visibility for Member 'xxx' does not access instance data and can be marked as static
 dotnet_diagnostic.CS8785.severity = error   # Do not hide root cause for: Generator 'xxx' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'xxx' with message 'xxx'
 dotnet_diagnostic.RS2008.severity = none    # Enable analyzer release tracking - we don't use the release tracking analyzer

analyzers/tests/SonarAnalyzer.UnitTest/Common/XUnitVersions.cs

@@ -1,4 +1,24 @@
-namespace SonarAnalyzer.UnitTest.Common;
+/*
+ * SonarAnalyzer for .NET
+ * Copyright (C) 2015-2023 SonarSource SA
+ * mailto: contact 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.
+ */
+
+namespace SonarAnalyzer.UnitTest.Common;
 
 public static class XUnitVersions
 {

analyzers/tests/SonarAnalyzer.UnitTest/Rules/Utilities/TokenTypeAnalyzerTest.ClassifierTestHarness.cs

@@ -1,4 +1,24 @@
-using System.Text;
+/*
+ * SonarAnalyzer for .NET
+ * Copyright (C) 2015-2023 SonarSource SA
+ * mailto: contact 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.Text;
 using System.Text.RegularExpressions;
 using Microsoft.CodeAnalysis.Text;
 using SonarAnalyzer.Protobuf;

analyzers/tests/SonarAnalyzer.UnitTest/TestFramework/Tests/ProjectBuilderTest.cs

@@ -1,4 +1,24 @@
-namespace SonarAnalyzer.UnitTest.TestFramework.Tests;
+/*
+ * SonarAnalyzer for .NET
+ * Copyright (C) 2015-2023 SonarSource SA
+ * mailto: contact 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.
+ */
+
+namespace SonarAnalyzer.UnitTest.TestFramework.Tests;
 
 [TestClass]
 public class ProjectBuilderTest
@@ -63,3 +83,4 @@ public void AddDocument_SupportsRazorFiles()
         new Action(() => EmptyVB.AddDocument("TestCases\\UnusedPrivateMember.vbhtml").FindDocument("UnusedPrivateMember.vbhtml").Should().NotBeNull())
             .Should().Throw<ArgumentException>();
 }
+