/*
 * Copyright 2018 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;

/**
 * @author bhagwani@google.com (Sumit Bhagwani)
 */
@RunWith(JUnit4.class)
public class InvalidZoneIdTest {

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

  @Test
  public void positiveCase() {
    compilationHelper
        .addSourceLines(
            "a/A.java",
            """
            package a;

            import java.time.ZoneId;

            class A {
              private static final String TIMEZONE_ID = "unknown";

              public static void test() {
                // BUG: Diagnostic contains:
                ZoneId.of("");
                // BUG: Diagnostic contains:
                ZoneId.of("unknown");
                // BUG: Diagnostic contains:
                ZoneId.of(TIMEZONE_ID);
                // BUG: Diagnostic contains:
                ZoneId.of("America/Los_Angele");
                // BUG: Diagnostic contains:
                ZoneId.of("America/Los Angeles");
                // BUG: Diagnostic contains:
                ZoneId.of("KST");
              }

              public static void invalidCustomIDs() {
                // BUG: Diagnostic contains:
                ZoneId.of("GMT+24");
                // BUG: Diagnostic contains:
                ZoneId.of("GMT1");
                // BUG: Diagnostic contains:
                ZoneId.of("GMT/0");
              }
            }
            """)
        .doTest();
  }

  @Test
  public void negativeCase() {
    compilationHelper
        .addSourceLines(
            "a/A.java",
            """
            package a;

            import java.time.ZoneId;

            class A {
              private static final String TIMEZONE_ID = "America/New_York";

              public static void ianaIDs() {
                ZoneId.of("America/Los_Angeles");
                ZoneId.of(TIMEZONE_ID);
                ZoneId.of("Europe/London");
              }

              public static void customIDs() {
                // Custom IDs
                ZoneId.of("GMT+0");
                ZoneId.of("GMT+00");
                ZoneId.of("GMT+00:00");
                ZoneId.of("GMT+00:00:00");
              }

              public static void twoLetterIDs() {
                ZoneId.of("UT");
              }

              public static void threeLetterIDs() {
                ZoneId.of("GMT");
                ZoneId.of("UTC");
              }
            }
            """)
        .doTest();
  }
}
