diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreEqualClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreEqualClassicModelAssertUsageCodeFixTests.cs
index 5d225afb..88dbb6d9 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreEqualClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreEqualClassicModelAssertUsageCodeFixTests.cs
@@ -339,8 +339,7 @@ public void CodeFixMaintainsReasonableTriviaWithNewLineClosingParen([Values] boo
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapInTestMethod($@"
             ↓ClassicAssert.AreEqual(
                 2d, 3d, 0.0000001d{optionalNewline});");
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreNotEqualClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreNotEqualClassicModelAssertUsageCodeFixTests.cs
index 5fab2a0e..bfeb92a1 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreNotEqualClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreNotEqualClassicModelAssertUsageCodeFixTests.cs
@@ -147,8 +147,7 @@ public void CodeFixMaintainsReasonableTriviaWithNewLineClosingParen([Values] boo
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapInTestMethod($@"
             ↓ClassicAssert.AreNotEqual(
                 2d, 3d{optionalNewline});");
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreNotSameClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreNotSameClassicModelAssertUsageCodeFixTests.cs
index e018845b..3055b58f 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreNotSameClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreNotSameClassicModelAssertUsageCodeFixTests.cs
@@ -197,8 +197,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreSameClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreSameClassicModelAssertUsageCodeFixTests.cs
index 982a0dfe..288c5816 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreSameClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/AreSameClassicModelAssertUsageCodeFixTests.cs
@@ -197,8 +197,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/ContainsClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/ContainsClassicModelAssertUsageCodeFixTests.cs
index 7389a8e4..1df5d73d 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/ContainsClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/ContainsClassicModelAssertUsageCodeFixTests.cs
@@ -197,8 +197,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/GreaterClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/GreaterClassicModelAssertUsageCodeFixTests.cs
index 2bf61d94..e1c09bbb 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/GreaterClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/GreaterClassicModelAssertUsageCodeFixTests.cs
@@ -283,8 +283,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/GreaterOrEqualClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/GreaterOrEqualClassicModelAssertUsageCodeFixTests.cs
index 839ba011..16bdff1d 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/GreaterOrEqualClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/GreaterOrEqualClassicModelAssertUsageCodeFixTests.cs
@@ -283,8 +283,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsEmptyClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsEmptyClassicModelAssertUsageCodeFixTests.cs
index 0678ab04..d3ff7601 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsEmptyClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsEmptyClassicModelAssertUsageCodeFixTests.cs
@@ -217,8 +217,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsFalseAndFalseClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsFalseAndFalseClassicModelAssertUsageCodeFixTests.cs
index d99cb774..ca3c6858 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsFalseAndFalseClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsFalseAndFalseClassicModelAssertUsageCodeFixTests.cs
@@ -230,8 +230,7 @@ public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine(
             [ValueSource(nameof(diagnosticIds))] string diagnosticId,
             [Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var assertion = diagnosticIdsToAssertions[diagnosticId];
             var expectedDiagnostic = ExpectedDiagnostic.Create(diagnosticId);
 
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsInstanceOfClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsInstanceOfClassicModelAssertUsageCodeFixTests.cs
index 3728faae..3e06e049 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsInstanceOfClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsInstanceOfClassicModelAssertUsageCodeFixTests.cs
@@ -417,8 +417,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNaNClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNaNClassicModelAssertUsageCodeFixTests.cs
index 610ce692..26c4b617 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNaNClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNaNClassicModelAssertUsageCodeFixTests.cs
@@ -181,8 +181,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotEmptyClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotEmptyClassicModelAssertUsageCodeFixTests.cs
index d1210b8a..ceae65b6 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotEmptyClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotEmptyClassicModelAssertUsageCodeFixTests.cs
@@ -253,8 +253,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotInstanceOfClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotInstanceOfClassicModelAssertUsageCodeFixTests.cs
index e040549c..a53e6927 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotInstanceOfClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotInstanceOfClassicModelAssertUsageCodeFixTests.cs
@@ -390,8 +390,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotNullAndNotNullClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotNullAndNotNullClassicModelAssertUsageCodeFixTests.cs
index 1bb68a16..4427fb9a 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotNullAndNotNullClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNotNullAndNotNullClassicModelAssertUsageCodeFixTests.cs
@@ -205,8 +205,7 @@ public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine(
             [ValueSource(nameof(diagnosticIds))] string diagnosticId,
             [Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var assertion = diagnosticIdsToAssertions[diagnosticId];
             var expectedDiagnostic = ExpectedDiagnostic.Create(diagnosticId);
 
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNullAndNullClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNullAndNullClassicModelAssertUsageCodeFixTests.cs
index c0a7f772..4797d42a 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNullAndNullClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsNullAndNullClassicModelAssertUsageCodeFixTests.cs
@@ -205,8 +205,7 @@ public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine(
             [ValueSource(nameof(diagnosticIds))] string diagnosticId,
             [Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var assertion = diagnosticIdsToAssertions[diagnosticId];
             var expectedDiagnostic = ExpectedDiagnostic.Create(diagnosticId);
 
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsTrueAndTrueClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsTrueAndTrueClassicModelAssertUsageCodeFixTests.cs
index 664a9994..7cb41e77 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsTrueAndTrueClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsTrueAndTrueClassicModelAssertUsageCodeFixTests.cs
@@ -269,8 +269,7 @@ public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine(
             [ValueSource(nameof(diagnosticIds))] string diagnosticId,
             [Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var assertion = diagnosticIdsToAssertions[diagnosticId];
             var expectedDiagnostic = ExpectedDiagnostic.Create(diagnosticId);
 
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsTrueAndTrueClassicModelAssertUsageCondensedCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsTrueAndTrueClassicModelAssertUsageCondensedCodeFixTests.cs
index 3db16b3d..5bd2d66e 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsTrueAndTrueClassicModelAssertUsageCondensedCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/IsTrueAndTrueClassicModelAssertUsageCondensedCodeFixTests.cs
@@ -196,8 +196,7 @@ public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine(
             [ValueSource(nameof(diagnosticIds))] string diagnosticId,
             [Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var assertion = diagnosticIdsToAssertions[diagnosticId];
             var expectedDiagnostic = ExpectedDiagnostic.Create(diagnosticId);
 
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/LessClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/LessClassicModelAssertUsageCodeFixTests.cs
index 209f33fc..10af177b 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/LessClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/LessClassicModelAssertUsageCodeFixTests.cs
@@ -283,8 +283,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/LessOrEqualClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/LessOrEqualClassicModelAssertUsageCodeFixTests.cs
index d2ed6596..8e8e6fc5 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/LessOrEqualClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/LessOrEqualClassicModelAssertUsageCodeFixTests.cs
@@ -283,8 +283,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
         {{
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/NotZeroClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/NotZeroClassicModelAssertUsageCodeFixTests.cs
index 9bdbafda..73551c95 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/NotZeroClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/NotZeroClassicModelAssertUsageCodeFixTests.cs
@@ -181,8 +181,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
 
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
diff --git a/src/nunit.analyzers.tests/ClassicModelAssertUsage/ZeroClassicModelAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ClassicModelAssertUsage/ZeroClassicModelAssertUsageCodeFixTests.cs
index 9de4d445..a6e2f4a6 100644
--- a/src/nunit.analyzers.tests/ClassicModelAssertUsage/ZeroClassicModelAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ClassicModelAssertUsage/ZeroClassicModelAssertUsageCodeFixTests.cs
@@ -181,8 +181,7 @@ public void TestMethod()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
 
             var code = TestUtility.WrapMethodInClassNamespaceAndAddUsings($@"
         public void TestMethod()
diff --git a/src/nunit.analyzers.tests/CollectionAssertUsage/CollectionAssertUsageCodeFixTests.cs b/src/nunit.analyzers.tests/CollectionAssertUsage/CollectionAssertUsageCodeFixTests.cs
index 8fd603d5..ca4e9f81 100644
--- a/src/nunit.analyzers.tests/CollectionAssertUsage/CollectionAssertUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/CollectionAssertUsage/CollectionAssertUsageCodeFixTests.cs
@@ -455,8 +455,7 @@ public void CodeFixForTwoCollectionParameterAssertsMaintainsReasonableTriviaWith
             [ValueSource(nameof(TwoCollectionParameterAsserts))] string method,
             [Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapInTestMethod(@$"
             var collection1 = new[] {{ 1, 2, 3 }};
             var collection2 = new[] {{ 2, 4, 6 }};
@@ -477,8 +476,7 @@ public void CodeFixForCollectionAndItemParameterAssertMaintainsReasonableTriviaW
             [ValueSource(nameof(CollectionAndItemParameterAsserts))] string method,
             [Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapInTestMethod(@$"
             var collection = new[] {{ typeof(byte), typeof(char) }};
             var expected = typeof(byte);
diff --git a/src/nunit.analyzers.tests/ConstraintsUsage/ComparisonConstraintUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ConstraintsUsage/ComparisonConstraintUsageCodeFixTests.cs
index 030faf91..3e39e3cc 100644
--- a/src/nunit.analyzers.tests/ConstraintsUsage/ComparisonConstraintUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ConstraintsUsage/ComparisonConstraintUsageCodeFixTests.cs
@@ -152,8 +152,7 @@ public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine(
             [ValueSource(nameof(operatorTokens))] string operatorToken,
             [Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var constraint = operatorTokensToConstraints[operatorToken];
             var code = TestUtility.WrapInTestMethod(@$"
             int actual = 5;
diff --git a/src/nunit.analyzers.tests/ConstraintsUsage/EqualConstraintUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ConstraintsUsage/EqualConstraintUsageCodeFixTests.cs
index 8ce86730..79c35cd5 100644
--- a/src/nunit.analyzers.tests/ConstraintsUsage/EqualConstraintUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ConstraintsUsage/EqualConstraintUsageCodeFixTests.cs
@@ -353,8 +353,7 @@ public void CodeFixMaintainsReasonableTriviaWithNewLineClosingParen([Values] boo
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapInTestMethod($@"
             var actual = ""abc"";
             Assert.That(
diff --git a/src/nunit.analyzers.tests/ConstraintsUsage/SomeItemsConstraintUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ConstraintsUsage/SomeItemsConstraintUsageCodeFixTests.cs
index 1fba9572..923f9b5d 100644
--- a/src/nunit.analyzers.tests/ConstraintsUsage/SomeItemsConstraintUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ConstraintsUsage/SomeItemsConstraintUsageCodeFixTests.cs
@@ -143,8 +143,7 @@ public void CodeFixMaintainsReasonableTriviaWithNewLineClosingParen()
         [Test]
         public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine([Values] bool newlineBeforeClosingParen)
         {
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var testCode = TestUtility.WrapInTestMethod($@"
             ClassicAssert.IsFalse(
                 ↓new[] {{ 1, 2, 3 }}.Contains(1), ""message""{optionalNewline});",
diff --git a/src/nunit.analyzers.tests/ConstraintsUsage/StringConstraintUsageCodeFixTests.cs b/src/nunit.analyzers.tests/ConstraintsUsage/StringConstraintUsageCodeFixTests.cs
index 856a4516..fb05ee19 100644
--- a/src/nunit.analyzers.tests/ConstraintsUsage/StringConstraintUsageCodeFixTests.cs
+++ b/src/nunit.analyzers.tests/ConstraintsUsage/StringConstraintUsageCodeFixTests.cs
@@ -167,8 +167,7 @@ public void CodeFixMaintainsReasonableTriviaWithAllArgumentsOnSameLine(
         {
             var analyzerId = NegativeAssertDictionary[method][1];
             var suggestedConstraint = NegativeAssertDictionary[method][2];
-            var optionalNewline = newlineBeforeClosingParen ? @"
-            " : string.Empty;
+            var optionalNewline = newlineBeforeClosingParen ? "\r\n            " : string.Empty;
             var code = TestUtility.WrapInTestMethod($@"
             Assert.That(
                 ↓""abc"".{method}(""ab""), Is.False{optionalNewline});");