diff --git a/src/libraries/System.Text.RegularExpressions/tests/Regex.Match.Tests.cs b/src/libraries/System.Text.RegularExpressions/tests/Regex.Match.Tests.cs
index 2bcc0bf4b467c..e839f6fcf8131 100644
--- a/src/libraries/System.Text.RegularExpressions/tests/Regex.Match.Tests.cs
+++ b/src/libraries/System.Text.RegularExpressions/tests/Regex.Match.Tests.cs
@@ -1011,20 +1011,20 @@ public void Match_DefaultTimeout_Throws(RegexOptions options)
                 if ((RegexOptions)int.Parse(optionsString, CultureInfo.InvariantCulture) == RegexOptions.None)
                 {
                     Assert.Throws<RegexMatchTimeoutException>(() => new Regex(Pattern).Match(input));
-                    VerifyIsMatchThrows<RegexMatchTimeoutException>(new Regex(Pattern), input, Regex.InfiniteMatchTimeout);
+                    Assert.Throws<RegexMatchTimeoutException>(() => new Regex(Pattern).IsMatch(input));
                     Assert.Throws<RegexMatchTimeoutException>(() => new Regex(Pattern).Matches(input).Count);
 
                     Assert.Throws<RegexMatchTimeoutException>(() => Regex.Match(input, Pattern));
-                    VerifyIsMatchThrows<RegexMatchTimeoutException>(null, input, Regex.InfiniteMatchTimeout, Pattern);
+                    Assert.Throws<RegexMatchTimeoutException>(() => Regex.IsMatch(input, Pattern));
                     Assert.Throws<RegexMatchTimeoutException>(() => Regex.Matches(input, Pattern).Count);
                 }
 
                 Assert.Throws<RegexMatchTimeoutException>(() => new Regex(Pattern, (RegexOptions)int.Parse(optionsString, CultureInfo.InvariantCulture)).Match(input));
-                VerifyIsMatchThrows<RegexMatchTimeoutException>(new Regex(Pattern, (RegexOptions)int.Parse(optionsString, CultureInfo.InvariantCulture)), input, Regex.InfiniteMatchTimeout);
+                Assert.Throws<RegexMatchTimeoutException>(() => new Regex(Pattern, (RegexOptions)int.Parse(optionsString, CultureInfo.InvariantCulture)).IsMatch(input));
                 Assert.Throws<RegexMatchTimeoutException>(() => new Regex(Pattern, (RegexOptions)int.Parse(optionsString, CultureInfo.InvariantCulture)).Matches(input).Count);
 
                 Assert.Throws<RegexMatchTimeoutException>(() => Regex.Match(input, Pattern, (RegexOptions)int.Parse(optionsString, CultureInfo.InvariantCulture)));
-                VerifyIsMatchThrows<RegexMatchTimeoutException>(null, input, Regex.InfiniteMatchTimeout, Pattern, (RegexOptions)int.Parse(optionsString, CultureInfo.InvariantCulture));
+                Assert.Throws<RegexMatchTimeoutException>(() => Regex.IsMatch(input, Pattern, (RegexOptions)int.Parse(optionsString, CultureInfo.InvariantCulture)));
                 Assert.Throws<RegexMatchTimeoutException>(() => Regex.Matches(input, Pattern, (RegexOptions)int.Parse(optionsString, CultureInfo.InvariantCulture)).Count);
             }, ((int)options).ToString(CultureInfo.InvariantCulture)).Dispose();
         }
diff --git a/src/libraries/System.Text.RegularExpressions/tests/RegexRunnerTests.cs b/src/libraries/System.Text.RegularExpressions/tests/RegexRunnerTests.cs
index 46343cc55de56..82f2ae5a0336b 100644
--- a/src/libraries/System.Text.RegularExpressions/tests/RegexRunnerTests.cs
+++ b/src/libraries/System.Text.RegularExpressions/tests/RegexRunnerTests.cs
@@ -10,10 +10,7 @@ namespace System.Text.RegularExpressions.Tests
     public class RegexRunnerTests
     {
         [Theory]
-        [InlineData(RegexEngine.Interpreter)]
-        [InlineData(RegexEngine.Compiled)]
-        [InlineData(RegexEngine.SourceGenerated)]
-        [InlineData(RegexEngine.NonBacktracking)]
+        [MemberData(nameof(RegexHelpers.AvailableEngines_MemberData), MemberType = typeof(RegexHelpers))]
         public async Task EnginesThrowNotImplementedForGoAndFFC(RegexEngine engine)
         {
             Regex re = await RegexHelpers.GetRegexAsync(engine, /*lang=regex*/@"abc");
@@ -34,10 +31,7 @@ public async Task EnginesThrowNotImplementedForGoAndFFC(RegexEngine engine)
         }
 
         [Theory]
-        [InlineData(RegexEngine.Interpreter)]
-        [InlineData(RegexEngine.Compiled)]
-        [InlineData(RegexEngine.SourceGenerated)]
-        [InlineData(RegexEngine.NonBacktracking)]
+        [MemberData(nameof(RegexHelpers.AvailableEngines_MemberData), MemberType = typeof(RegexHelpers))]
         public async Task EnsureRunmatchValueIsNulledAfterIsMatch(RegexEngine engine)
         {
             Regex re = await RegexHelpers.GetRegexAsync(engine, /*lang=regex*/@"abc");
@@ -53,8 +47,8 @@ public async Task EnsureRunmatchValueIsNulledAfterIsMatch(RegexEngine engine)
             Assert.NotNull(runmatch);
 
             // Ensure that the Value of runmatch was nulled out, so as to not keep a reference to it in a cache.
-            PropertyInfo textProperty = typeof(Match).GetProperty("Text", BindingFlags.Instance | BindingFlags.NonPublic);
-            Assert.Null(textProperty.GetValue(runmatch));
+            MethodInfo getTextMethod = typeof(Match).GetMethod("get_Text", BindingFlags.Instance | BindingFlags.NonPublic);
+            Assert.Null(getTextMethod.Invoke(runmatch, new object[] { }));
             Assert.Equal(string.Empty, runmatch.Value);
 #if NET7_0_OR_GREATER
             Assert.True(runmatch.ValueSpan == ReadOnlySpan<char>.Empty);
diff --git a/src/libraries/System.Text.RegularExpressions/tests/System.Text.RegularExpressions.Tests.csproj b/src/libraries/System.Text.RegularExpressions/tests/System.Text.RegularExpressions.Tests.csproj
index d382adaad11c6..951257ab4b5b6 100644
--- a/src/libraries/System.Text.RegularExpressions/tests/System.Text.RegularExpressions.Tests.csproj
+++ b/src/libraries/System.Text.RegularExpressions/tests/System.Text.RegularExpressions.Tests.csproj
@@ -11,7 +11,6 @@
   <ItemGroup>
     <Compile Include="AttRegexTests.cs" />
     <Compile Include="CaptureCollectionTests.cs" />
-    <Compile Include="CustomDerivedRegexScenarioTest.cs" />
     <Compile Include="GroupCollectionTests.cs" />
     <Compile Include="MatchCollectionTests.cs" />
     <Compile Include="MonoRegexTests.cs" />
@@ -33,7 +32,6 @@
     <Compile Include="RegexMatchTimeoutExceptionTests.cs" />
     <Compile Include="RegexParserTests.cs" />
     <Compile Include="RegexReductionTests.cs" />
-    <Compile Include="RegexRunnerTests.cs" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net48'">
     <Compile Include="..\src\System\Text\RegularExpressions\RegexParseError.cs" Link="System\Text\RegularExpressions\RegexParseError.cs" />
@@ -43,6 +41,8 @@
     <PackageReference Include="System.Text.Json" Version="$(SystemTextJsonVersion)" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == '$(NetCoreAppCurrent)'">
+    <Compile Include="CustomDerivedRegexScenarioTest.cs" />
+    <Compile Include="RegexRunnerTests.cs" />
     <Compile Include="Regex.Count.Tests.cs" />
     <Compile Include="RegexAssert.netcoreapp.cs" />
     <Compile Include="RegexParserTests.netcoreapp.cs" />