refactor: Replace GetAssemblyBuildConfiguration with GetBuildConfigurationString for consistency and lowercase output

Author: Bertk

test/coverlet.integration.tests/Collectors.cs

@@ -50,7 +50,7 @@ public abstract class Collectors : BaseTest
 
     public Collectors()
     {
-      _buildConfiguration = TestUtils.GetAssemblyBuildConfiguration().ToString();
+      _buildConfiguration = TestUtils.GetBuildConfigurationString();
       _buildTargetFramework = TestUtils.GetAssemblyTargetFramework();
     }
 

test/coverlet.integration.tests/DeterministicBuild.cs

@@ -32,7 +32,7 @@ public class DeterministicBuild : BaseTest, IDisposable
 
     public DeterministicBuild(ITestOutputHelper output)
     {
-      _buildConfiguration = TestUtils.GetAssemblyBuildConfiguration().ToString();
+      _buildConfiguration = TestUtils.GetBuildConfigurationString();
       _buildTargetFramework = TestUtils.GetAssemblyTargetFramework();
       _artifactsPivot = _buildConfiguration + "_" + _buildTargetFramework;
       _output = output;
@@ -74,7 +74,7 @@ private void CreateDeterministicTestPropsFile()
 
     private protected void AssertCoverage(string standardOutput = "", string reportName = "", bool checkDeterministicReport = true)
     {
-      if (_buildConfiguration == "Debug")
+      if (_buildConfiguration == "debug")
       {
         bool coverageChecked = false;
         string reportFilePath = "";

test/coverlet.integration.tests/Msbuild.cs

@@ -17,7 +17,7 @@ public class Msbuild : BaseTest
 
     public Msbuild(ITestOutputHelper output)
     {
-      _buildConfiguration = TestUtils.GetAssemblyBuildConfiguration().ToString();
+      _buildConfiguration = TestUtils.GetBuildConfigurationString();
       _buildTargetFramework = TestUtils.GetAssemblyTargetFramework();
       _output = output;
     }

test/coverlet.tests.utils/TestUtils.cs

@@ -45,6 +45,12 @@ public static string GetAssemblyTargetFramework()
       throw new NotSupportedException($"Build configuration not supported");
     }
 
+    public static string GetBuildConfigurationString()
+    {
+      // Returns lowercase configuration string to match MSBuild output paths on case-sensitive filesystems
+      return GetAssemblyBuildConfiguration().ToString().ToLower();
+    }
+
     public static string GetTestProjectPath(string directoryName)
     {
       return Path.Join(Path.GetFullPath(Path.Join(AppContext.BaseDirectory, s_rel4Parents)), "test", directoryName);