/*
 * Copyright 2019 The Error Prone Authors.
 *
 * Licensed 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 com.google.errorprone.bugpatterns;

import com.google.errorprone.CompilationTestHelper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Unit tests for {@link DuplicateMapKeys} check.
 *
 * @author bhagwani@google.com (Sumit Bhagwani)
 */
@RunWith(JUnit4.class)
public class DuplicateMapKeysTest {

  private final CompilationTestHelper compilationHelper =
      CompilationTestHelper.newInstance(DuplicateMapKeys.class, getClass());

  @Test
  public void positiveCase() {
    compilationHelper
        .addSourceLines(
            "a/A.java",
            """
            package a;
            import static java.util.Map.entry;
            import java.util.Map;
            class A {
              public static void test() {
                // BUG: Diagnostic contains: Foo
                Map<String, String> map = Map.ofEntries(
                entry("Foo", "Bar"),
                entry("Ping", "Pong"),
                entry("Kit", "Kat"),
                entry("Foo", "Bar"));
              }
            }
            """)
        .doTest();
  }

  @Test
  public void negativeCase() {
    compilationHelper
        .addSourceLines(
            "a/A.java",
            """
            package a;
            import static java.util.Map.entry;
            import java.util.Map;
            class A {
              public static void test() {
                Map<String, String> map = Map.ofEntries(
                entry("Foo", "Bar"),
                entry("Ping", "Pong"),
                entry("Kit", "Kat"),
                entry("Food", "Bar"));
              }
            }
            """)
        .doTest();
  }
}
