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diff --git a/javaparser-testing/src/test/java/com/github/javaparser/printer/lexicalpreservation/transformations/ast/body/ClassOrInterfaceDeclarationTransformationsTest.java b/javaparser-testing/src/test/java/com/github/javaparser/printer/lexicalpreservation/transformations/ast/body/ClassOrInterfaceDeclarationTransformationsTest.java
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+++ b/javaparser-testing/src/test/java/com/github/javaparser/printer/lexicalpreservation/transformations/ast/body/ClassOrInterfaceDeclarationTransformationsTest.java
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+/*
+ * Copyright (C) 2007-2010 Júlio Vilmar Gesser.
+ * Copyright (C) 2011, 2013-2016 The JavaParser Team.
+ *
+ * This file is part of JavaParser.
+ *
+ * JavaParser can be used either under the terms of
+ * a) the GNU Lesser General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ * b) the terms of the Apache License
+ *
+ * You should have received a copy of both licenses in LICENCE.LGPL and
+ * LICENCE.APACHE. Please refer to those files for details.
+ *
+ * JavaParser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ */
+
+package com.github.javaparser.printer.lexicalpreservation.transformations.ast.body;
+
+import com.github.javaparser.ast.Modifier;
+import com.github.javaparser.ast.NodeList;
+import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
+import com.github.javaparser.ast.body.FieldDeclaration;
+import com.github.javaparser.ast.body.VariableDeclarator;
+import com.github.javaparser.ast.type.PrimitiveType;
+import com.github.javaparser.ast.type.TypeParameter;
+import com.github.javaparser.printer.lexicalpreservation.AbstractLexicalPreservingTest;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.util.EnumSet;
+
+import static com.github.javaparser.JavaParser.parseClassOrInterfaceType;
+import static com.github.javaparser.utils.Utils.EOL;
+
+/**
+ * Transforming ClassOrInterfaceDeclaration and verifying the LexicalPreservation works as expected.
+ */
+public class ClassOrInterfaceDeclarationTransformationsTest extends AbstractLexicalPreservingTest {
+
+    protected ClassOrInterfaceDeclaration consider(String code) {
+        considerCode(code);
+        return cu.getType(0).asClassOrInterfaceDeclaration();
+    }
+
+    // Name
+
+    @Test
+    public void settingName() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("class A {}");
+        cid.setName("B");
+        assertTransformedToString("class B {}", cid);
+    }
+
+    // isInterface
+
+    @Test
+    public void classToInterface() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("class A {}");
+        cid.setInterface(true);
+        assertTransformedToString("interface A {}", cid);
+    }
+
+    @Test
+    public void interfaceToClass() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("interface A {}");
+        cid.setInterface(false);
+        assertTransformedToString("class A {}", cid);
+    }
+
+    // typeParameters
+
+    @Test
+    public void addingTypeParameterWhenThereAreNone() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("class A {}");
+        cid.addTypeParameter(new TypeParameter("T", new NodeList<>()));
+        assertTransformedToString("class A<T> {}", cid);
+    }
+
+    @Test
+    public void addingTypeParameterAsFirstWhenThereAreSome() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("class A<U> {}");
+        cid.getTypeParameters().addFirst(new TypeParameter("T", new NodeList<>()));
+        assertTransformedToString("class A<T, U> {}", cid);
+    }
+
+    @Test
+    public void addingTypeParameterAsLastWhenThereAreSome() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("class A<U> {}");
+        cid.addTypeParameter(new TypeParameter("T", new NodeList<>()));
+        assertTransformedToString("class A<U, T> {}", cid);
+    }
+
+    // extendedTypes
+
+    @Test
+    public void addingExtendedTypes() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("class A {}");
+        cid.addExtendedType("Foo");
+        assertTransformedToString("class A extends Foo {}", cid);
+    }
+
+    @Test
+    public void removingExtendedTypes() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("public class A extends Foo {}");
+        cid.getExtendedTypes().remove(0);
+        assertTransformedToString("public class A {}", cid);
+    }
+
+    @Test
+    public void replacingExtendedTypes() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("public class A extends Foo {}");
+        cid.getExtendedTypes().set(0, parseClassOrInterfaceType("Bar"));
+        assertTransformedToString("public class A extends Bar {}", cid);
+    }
+
+    // implementedTypes
+
+    @Test
+    public void addingImplementedTypes() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("class A {}");
+        cid.addImplementedType("Foo");
+        assertTransformedToString("class A implements Foo {}", cid);
+    }
+
+    @Test
+    public void removingImplementedTypes() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("public class A implements Foo {}");
+        cid.getImplementedTypes().remove(0);
+        assertTransformedToString("public class A {}", cid);
+    }
+
+    @Test
+    public void replacingImplementedTypes() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("public class A implements Foo {}");
+        cid.getImplementedTypes().set(0, parseClassOrInterfaceType("Bar"));
+        assertTransformedToString("public class A implements Bar {}", cid);
+    }
+
+    // Modifiers
+
+    @Test
+    public void addingModifiers() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("class A {}");
+        cid.setModifiers(EnumSet.of(Modifier.PUBLIC));
+        assertTransformedToString("public class A {}", cid);
+    }
+
+    @Test
+    public void removingModifiers() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("public class A {}");
+        cid.setModifiers(EnumSet.noneOf(Modifier.class));
+        assertTransformedToString("class A {}", cid);
+    }
+
+    @Test
+    public void replacingModifiers() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("public class A {}");
+        cid.setModifiers(EnumSet.of(Modifier.PROTECTED));
+        assertTransformedToString("protected class A {}", cid);
+    }
+
+    // members
+
+    @Test
+    public void addingField() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("class A {}");
+        cid.addField("int", "foo");
+        assertTransformedToString("class A {" + EOL + "    int foo;" + EOL + "}", cid);
+    }
+
+    @Test
+    public void removingField() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("public class A { int foo; }");
+        cid.getMembers().remove(0);
+        assertTransformedToString("public class A {}", cid);
+    }
+
+    @Test
+    public void replacingFieldWithAnotherField() throws IOException {
+        ClassOrInterfaceDeclaration cid = consider("public class A {float f;}");
+        cid.getMembers().set(0, new FieldDeclaration(EnumSet.noneOf(Modifier.class), new VariableDeclarator(PrimitiveType.intType(), "bar")));
+        assertTransformedToString("public class A {int bar;}", cid);
+    }
+
+    // Annotations
+
+    // Javadoc
+
+}