diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/AbstractModuleTestSupport.java b/src/test/java/com/puppycrawl/tools/checkstyle/AbstractModuleTestSupport.java
index 179570e326b..725681c604e 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/AbstractModuleTestSupport.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/AbstractModuleTestSupport.java
@@ -224,21 +224,23 @@ protected final void verifyFilterWithInlineConfigParser(Configuration aConfig,
             throws Exception {
         final TestInputConfiguration checkTestInputConfiguration =
                 InlineConfigParser.parseWithFilteredViolations(filePath);
-        final Configuration parsedCheckConfig = checkTestInputConfiguration.createConfiguration();
-        verifyConfig(aConfig, parsedCheckConfig,
-                checkTestInputConfiguration.getChildrenModules().get(0));
+        final DefaultConfiguration parsedCheckConfig =
+                checkTestInputConfiguration.createConfiguration();
+        final ModuleInputConfiguration checkModule =
+                checkTestInputConfiguration.getChildrenModules().get(0);
+        verifyConfig(aConfig, checkModule.createConfiguration(), checkModule);
         verifyViolations(parsedCheckConfig, filePath, checkTestInputConfiguration);
         verify(parsedCheckConfig, filePath, expectedUnfiltered);
         final TestInputConfiguration filterTestInputConfiguration =
                 InlineConfigParser.parseFilter(filePath);
-        final Configuration parsedFilterConfig =
+        final DefaultConfiguration parsedFilterConfig =
                 filterTestInputConfiguration.createConfiguration();
-        verifyConfig(filterConfig, parsedFilterConfig,
-                filterTestInputConfiguration.getChildrenModules().get(0));
-        final DefaultConfiguration rootConfig = createRootConfig(parsedCheckConfig);
-        rootConfig.addChild(parsedFilterConfig);
-        verifyViolations(rootConfig, filePath, filterTestInputConfiguration);
-        verify(rootConfig, filePath, expectedFiltered);
+        final ModuleInputConfiguration filterModule =
+                filterTestInputConfiguration.getChildrenModules().get(0);
+        verifyConfig(filterConfig, filterModule.createConfiguration(), filterModule);
+        parsedCheckConfig.addChild(filterModule.createConfiguration());
+        verifyViolations(parsedCheckConfig, filePath, filterTestInputConfiguration);
+        verify(parsedCheckConfig, filePath, expectedFiltered);
     }
 
     /**
@@ -257,7 +259,9 @@ protected final void verifyWithInlineConfigParser(Configuration aConfig,
         final TestInputConfiguration testInputConfiguration =
                 InlineConfigParser.parse(filePath);
         final Configuration parsedConfig = testInputConfiguration.createConfiguration();
-        verifyConfig(aConfig, parsedConfig, testInputConfiguration.getChildrenModules().get(0));
+        final ModuleInputConfiguration checkModule =
+                testInputConfiguration.getChildrenModules().get(0);
+        verifyConfig(aConfig, checkModule.createConfiguration(), checkModule);
         verifyViolations(parsedConfig, filePath, testInputConfiguration);
         verify(parsedConfig, filePath, expected);
     }
diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/bdd/TestInputConfiguration.java b/src/test/java/com/puppycrawl/tools/checkstyle/bdd/TestInputConfiguration.java
index 574a0a2c2ce..d5433091b4f 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/bdd/TestInputConfiguration.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/bdd/TestInputConfiguration.java
@@ -19,14 +19,42 @@
 
 package com.puppycrawl.tools.checkstyle.bdd;
 
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 import com.puppycrawl.tools.checkstyle.DefaultConfiguration;
+import com.puppycrawl.tools.checkstyle.TreeWalker;
 
 public final class TestInputConfiguration {
 
+    private static final String ROOT_MODULE_NAME = "root";
+
+    private static final Set<String> CHECKER_CHILDREN = new HashSet<>(Arrays.asList(
+            "com.puppycrawl.tools.checkstyle.filefilters.BeforeExecutionExclusionFileFilter",
+            "com.puppycrawl.tools.checkstyle.filters.SeverityMatchFilter",
+            "com.puppycrawl.tools.checkstyle.filters.SuppressionFilter",
+            "com.puppycrawl.tools.checkstyle.filters.SuppressionSingleFilter",
+            "com.puppycrawl.tools.checkstyle.filters.SuppressWarningsFilter",
+            "com.puppycrawl.tools.checkstyle.filters.SuppressWithPlainTextCommentFilter",
+            "com.puppycrawl.tools.checkstyle.checks.header.HeaderCheck",
+            "com.puppycrawl.tools.checkstyle.checks.header.RegexpHeaderCheck",
+            "com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocPackageCheck",
+            "com.puppycrawl.tools.checkstyle.checks.NewlineAtEndOfFileCheck",
+            "com.puppycrawl.tools.checkstyle.checks.UniquePropertiesCheck",
+            "com.puppycrawl.tools.checkstyle.checks.OrderedPropertiesCheck",
+            "com.puppycrawl.tools.checkstyle.checks.regexp.RegexpMultilineCheck",
+            "com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineCheck",
+            "com.puppycrawl.tools.checkstyle.checks.regexp.RegexpOnFilenameCheck",
+            "com.puppycrawl.tools.checkstyle.checks.sizes.FileLengthCheck",
+            "com.puppycrawl.tools.checkstyle.checks.sizes.LineLengthCheck",
+            "com.puppycrawl.tools.checkstyle.checks.whitespace.FileTabCharacterCheck"
+    ));
+
     private final List<ModuleInputConfiguration> childrenModules;
 
     private final List<TestInputViolation> violations;
@@ -46,7 +74,23 @@ public List<ModuleInputConfiguration> getChildrenModules() {
     }
 
     public DefaultConfiguration createConfiguration() {
-        return childrenModules.get(0).createConfiguration();
+        final DefaultConfiguration root = new DefaultConfiguration(ROOT_MODULE_NAME);
+        final DefaultConfiguration treeWalker =
+                new DefaultConfiguration(TreeWalker.class.getName());
+        root.addProperty("charset", StandardCharsets.UTF_8.name());
+        childrenModules
+                .stream()
+                .map(ModuleInputConfiguration::createConfiguration)
+                .forEach(moduleConfig -> {
+                    if (CHECKER_CHILDREN.contains(moduleConfig.getName())) {
+                        root.addChild(moduleConfig);
+                    }
+                    else {
+                        treeWalker.addChild(moduleConfig);
+                    }
+                });
+        root.addChild(treeWalker);
+        return root;
     }
 
     public static final class Builder {