/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.netbeans.modules.java.hints.perf;

import org.netbeans.junit.NbTestCase;
import org.netbeans.modules.java.hints.test.api.HintTest;

/**
 *
 * @author lahvac
 */
public class StringBuffer2BuilderTest extends NbTestCase {

    public StringBuffer2BuilderTest(String name) {
        super(name);
    }

    public void testSimple1() throws Exception {
        HintTest
                .create()
                .input("package test;\n" +
                       "import java.util.List;" +
                       "public class Test {\n" +
                       "     private String test(List l) {\n" +
                       "         StringBuffer buf = new StringBuffer();\n" +
                       "         buf.append(l.get(0));\n" +
                       "         return buf.toString();\n" +
                       "     }\n" +
                       "}\n")
                .run(StringBuffer2Builder.class)
                .findWarning("3:9-3:21:verifier:StringBuffer2Builder")
                .applyFix("=>StringBuilder")
                .assertCompilable()
                .assertOutput("package test;\n" +
                              "import java.util.List;" +
                              "public class Test {\n" +
                              "     private String test(List l) {\n" +
                              "         StringBuilder buf = new StringBuilder();\n" +
                              "         buf.append(l.get(0));\n" +
                              "         return buf.toString();\n" +
                              "     }\n" +
                              "}\n");
    }

    public void testSimple2() throws Exception {
        HintTest
                .create()
                .input("package test;\n" +
                       "import java.util.List;" +
                       "public class Test {\n" +
                       "     private String test(List l) {\n" +
                       "         StringBuffer buf = new StringBuffer(12);\n" +
                       "         buf.append(l.get(0));\n" +
                       "         return buf.toString();\n" +
                       "     }\n" +
                       "}\n")
                .run(StringBuffer2Builder.class)
                .findWarning("3:9-3:21:verifier:StringBuffer2Builder")
                .applyFix("=>StringBuilder")
                .assertCompilable()
                .assertOutput("package test;\n" +
                              "import java.util.List;" +
                              "public class Test {\n" +
                              "     private String test(List l) {\n" +
                              "         StringBuilder buf = new StringBuilder(12);\n" +
                              "         buf.append(l.get(0));\n" +
                              "         return buf.toString();\n" +
                              "     }\n" +
                              "}\n");
    }

    public void testSimple3() throws Exception {
        HintTest
                .create()
                .input("package test;\n" +
                       "import java.util.List;" +
                       "public class Test {\n" +
                       "     private String test(List l) {\n" +
                       "         StringBuffer buf = new StringBuffer();\n" +
                       "         test(buf);\n" +
                       "         return buf.toString();\n" +
                       "     }\n" +
                       "     private void test(StringBuffer sb) {\n" +
                       "     }\n" +
                       "}\n")
                .run(StringBuffer2Builder.class)
                .assertWarnings();
    }

    public void testSimple4() throws Exception {
        HintTest
                .create()
                .input("package test;\n" +
                       "import java.util.List;" +
                       "public class Test {" +
                       "     private StringBuffer sb;\n" +
                       "     private String test(List l) {\n" +
                       "         StringBuffer buf = new StringBuffer();\n" +
                       "         sb = buf;\n" +
                       "         return buf.toString();\n" +
                       "     }\n" +
                       "}\n")
                .run(StringBuffer2Builder.class)
                .assertWarnings();
    }
}