diff --git a/src/Standards/Generic/Sniffs/Metrics/NestingLevelSniff.php b/src/Standards/Generic/Sniffs/Metrics/NestingLevelSniff.php
index 3c086c7fe4..d2672b5eeb 100644
--- a/src/Standards/Generic/Sniffs/Metrics/NestingLevelSniff.php
+++ b/src/Standards/Generic/Sniffs/Metrics/NestingLevelSniff.php
@@ -56,8 +56,8 @@ public function process(File $phpcsFile, $stackPtr)
     {
         $tokens = $phpcsFile->getTokens();
 
-        // Ignore abstract methods.
-        if (isset($tokens[$stackPtr]['scope_opener']) === false) {
+        // Ignore abstract and interface methods. Bail early when live coding.
+        if (isset($tokens[$stackPtr]['scope_opener'], $tokens[$stackPtr]['scope_closer']) === false) {
             return;
         }
 
diff --git a/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.inc b/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.1.inc
similarity index 68%
rename from src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.inc
rename to src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.1.inc
index 9708792418..3f1dd92617 100644
--- a/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.inc
+++ b/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.1.inc
@@ -27,16 +27,16 @@ function nestingFive()
 function nestingSix()
 {
     if ($condition) {
-        echo 'hi';
-        switch ($condition)
-        {
+    } else {
+        switch ($condition) {
             case '1':
                 if ($condition === '1') {
-                    if ($cond) {
+                } elseif ($condition === '2') {
+                    do {
                         foreach ($conds as $cond) {
                             echo 'hi';
                         }
-                    }
+                    } while ($cond > 5);
                 }
             break;
         }
@@ -79,19 +79,19 @@ function nestingEleven()
             case '1':
                 if ($condition === '1') {
                     if ($cond) {
-                        switch ($cond) {
-                            case '1':
-                                if ($cond === '1') {
-                                    foreach ($conds as $cond) {
-                                        if ($cond === 'hi') {
-                                            if ($cond !== 'bye') {
-                                                echo 'hi';
-                                            }
+                        try {
+                            if ( $cond === '1' ) {
+                                for ( $i = 0; $i < 10; $i ++ ) {
+                                    while ($i < 5) {
+                                        if ( $cond === 'hi' ) {
+                                            match ( $cond ) {
+                                                'hi' => 'something',
+                                            };
                                         }
                                     }
                                 }
-                            break;
-                        }
+                            }
+                        } catch (Exception $e) {}
                     }
                 }
             break;
@@ -99,4 +99,10 @@ function nestingEleven()
     }
 }
 
-?>
+abstract class AbstractClass {
+    abstract public function sniffShouldIgnoreAbstractMethods();
+}
+
+interface MyInterface {
+    public function sniffShouldIgnoreInterfaceMethods();
+}
diff --git a/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.2.inc b/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.2.inc
new file mode 100644
index 0000000000..9658af3005
--- /dev/null
+++ b/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.2.inc
@@ -0,0 +1,7 @@
+<?php
+
+// Intentional parse error (missing opening curly bracket).
+// This should be the only test in this file.
+// Testing that the sniff is *not* triggered.
+
+function sniffShouldBailMissingScopeOpener()
diff --git a/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.3.inc b/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.3.inc
new file mode 100644
index 0000000000..e8ff0cc1a7
--- /dev/null
+++ b/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.3.inc
@@ -0,0 +1,7 @@
+<?php
+
+// Intentional parse error (missing closing curly bracket).
+// This should be the only test in this file.
+// Testing that the sniff is *not* triggered.
+
+function sniffShouldBailMissingScopeCloser() {
diff --git a/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.php b/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.php
index fda8d461c7..c26ca45692 100644
--- a/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.php
+++ b/src/Standards/Generic/Tests/Metrics/NestingLevelUnitTest.php
@@ -26,11 +26,18 @@ final class NestingLevelUnitTest extends AbstractSniffUnitTest
      * The key of the array should represent the line number and the value
      * should represent the number of errors that should occur on that line.
      *
+     * @param string $testFile The name of the test file to process.
+     *
      * @return array<int, int>
      */
-    public function getErrorList()
+    public function getErrorList($testFile='')
     {
-        return [73 => 1];
+        switch ($testFile) {
+        case 'NestingLevelUnitTest.1.inc':
+            return [73 => 1];
+        default:
+            return [];
+        }
 
     }//end getErrorList()
 
@@ -41,14 +48,21 @@ public function getErrorList()
      * The key of the array should represent the line number and the value
      * should represent the number of warnings that should occur on that line.
      *
+     * @param string $testFile The name of the test file to process.
+     *
      * @return array<int, int>
      */
-    public function getWarningList()
+    public function getWarningList($testFile='')
     {
-        return [
-            27 => 1,
-            46 => 1,
-        ];
+        switch ($testFile) {
+        case 'NestingLevelUnitTest.1.inc':
+            return [
+                27 => 1,
+                46 => 1,
+            ];
+        default:
+            return [];
+        }
 
     }//end getWarningList()