/*
 * Copyright 2021 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.flogger;

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

/** {@link FloggerArgumentToString}Test */
@RunWith(JUnit4.class)
public class FloggerArgumentToStringTest {

  private final CompilationTestHelper testHelper =
      CompilationTestHelper.newInstance(FloggerArgumentToString.class, getClass());

  private final BugCheckerRefactoringTestHelper refactoringHelper =
      BugCheckerRefactoringTestHelper.newInstance(FloggerArgumentToString.class, getClass());

  @Test
  public void refactoring() {
    refactoringHelper
        .addInputLines(
            "in/Test.java",
            """
            import com.google.common.base.Ascii;
            import com.google.common.flogger.FluentLogger;
            import java.util.Arrays;

            class Test {
              private static final FluentLogger logger = FluentLogger.forEnclosingClass();

              public void f(String world, Object[] xs, long l) {
                logger.atInfo().log("hello '%s'", world.toString());
                logger.atInfo().log("hello %s %d", world.toString(), 2);
                logger.atInfo().log("hello %s", world.toUpperCase());
                logger.atInfo().log("hello %s", Ascii.toUpperCase(world));
                logger.atInfo().log("hello %s", Integer.toString(42));
                logger.atInfo().log("hello %d", Integer.valueOf(42));
                logger.atInfo().log("hello %s", Integer.toHexString(42));
                logger.atInfo().log("hello %S", Integer.toHexString(42));
                logger.atInfo().log("hello %s", Arrays.asList(1, 2));
                logger.atInfo().log("hello %s", Arrays.asList(xs));
                logger.atInfo().log("hello %s", Arrays.toString(xs));
                logger.atInfo().log("hello %s", Long.toHexString(l));
                logger.atInfo().log("%%s", Ascii.toUpperCase(world));
              }
            }
            """)
        .addOutputLines(
            "out/Test.java",
            """
            import com.google.common.base.Ascii;
            import com.google.common.flogger.FluentLogger;
            import java.util.Arrays;

            class Test {
              private static final FluentLogger logger = FluentLogger.forEnclosingClass();

              public void f(String world, Object[] xs, long l) {
                logger.atInfo().log("hello '%s'", world);
                logger.atInfo().log("hello %s %d", world, 2);
                logger.atInfo().log("hello %S", world);
                logger.atInfo().log("hello %S", world);
                logger.atInfo().log("hello %d", 42);
                logger.atInfo().log("hello %d", 42);
                logger.atInfo().log("hello %x", 42);
                logger.atInfo().log("hello %X", 42);
                logger.atInfo().log("hello %s", Arrays.asList(1, 2));
                logger.atInfo().log("hello %s", xs);
                logger.atInfo().log("hello %s", xs);
                logger.atInfo().log("hello %x", l);
                logger.atInfo().log("%%s", Ascii.toUpperCase(world));
              }
            }
            """)
        .doTest();
  }

  @Test
  public void negative() {
    testHelper
        .addSourceLines(
            "Test.java",
            """
            import com.google.common.flogger.FluentLogger;

            class Test {
              private static final FluentLogger logger = FluentLogger.forEnclosingClass();

              public void f(String world) {
                logger.atInfo().log("hello '%s'", world);
              }
            }
            """)
        .doTest();
  }

  @Test
  public void selfToString() {
    refactoringHelper
        .addInputLines(
            "Test.java",
            """
            import com.google.common.flogger.FluentLogger;

            class Test {
              private static final FluentLogger logger = FluentLogger.forEnclosingClass();

              public void f() {
                logger.atInfo().log("hello '%s'", toString());
              }
            }
            """)
        .addOutputLines(
            "Test.java",
            """
            import com.google.common.flogger.FluentLogger;

            class Test {
              private static final FluentLogger logger = FluentLogger.forEnclosingClass();

              public void f() {
                logger.atInfo().log("hello '%s'", this);
              }
            }
            """)
        .doTest();
  }

  @Test
  public void lenientFormat_explicitToStringNotNeeded() {
    testHelper
        .addSourceLines(
            "Test.java",
            """
            import static com.google.common.base.Preconditions.checkArgument;

            class Test {
              void test(Object x, long l) {
                // BUG: Diagnostic contains:
                checkArgument(1 == 1, "%s", x.toString());
                // BUG: Diagnostic contains:
                checkArgument(1 == 1, "%s", Long.toString(l));
              }
            }
            """)
        .doTest();
  }
}
