/*
 * Copyright (c) 2013- Facebook.
 * All rights reserved.
 */

package endtoend.objc;

import static org.hamcrest.MatcherAssert.assertThat;
import static utils.matchers.ResultContainsNoErrorInMethod.doesNotContain;
import static utils.matchers.ResultContainsErrorInMethod.contains;

import com.google.common.collect.ImmutableList;

import org.junit.BeforeClass;
import org.junit.ClassRule;
import org.junit.Test;

import java.io.IOException;

import utils.DebuggableTemporaryFolder;
import utils.InferException;
import utils.InferResults;
import utils.InferRunner;

public class NPESelfTest {

  public static final String NPE_FILE =
      "infer/tests/codetoanalyze/objc/errors/npe/npe_self.m";

  private static ImmutableList<String> inferCmdNPD;

  public static final String NULL_DEREFERENCE = "NULL_DEREFERENCE";

  @ClassRule
  public static DebuggableTemporaryFolder folderNPD = new DebuggableTemporaryFolder();

  @BeforeClass
  public static void runInfer() throws InterruptedException, IOException {
    inferCmdNPD = InferRunner.createiOSInferCommandWithMLBuckets(
        folderNPD,
        NPE_FILE,
        "cf",
        true);
  }

  @Test
  public void whenInferRunsOncaptureManagerSessionDidStartThenNoNPEFound()
      throws InterruptedException, IOException, InferException {
    InferResults inferResults = InferRunner.runInferObjC(inferCmdNPD);
    assertThat(
        "NPE should not be found", inferResults,
        doesNotContain(
            NULL_DEREFERENCE,
            NPE_FILE,
            "captureManagerSessionDidStart"));
  }

  @Test
  public void whenInferRunsOnInitThenNoNPEFound()
      throws InterruptedException, IOException, InferException {
    InferResults inferResults = InferRunner.runInferObjC(inferCmdNPD);
    assertThat(
        "NPE should be found", inferResults,
        contains(
            NULL_DEREFERENCE,
            NPE_FILE,
            "init"));
  }

  @Test
  public void whenInferRunsOnTestThenNoNPEFound()
      throws InterruptedException, IOException, InferException {
    InferResults inferResults = InferRunner.runInferObjC(inferCmdNPD);
    assertThat(
        "NPE should be found, and the field name in the error message is correct", inferResults,
        contains(
            NULL_DEREFERENCE,
            NPE_FILE,
            "test"));
  }

  @Test
  public void whenInferRunsOnIsEqualThenNoNPEFound()
      throws InterruptedException, IOException, InferException {
    InferResults inferResults = InferRunner.runInferObjC(inferCmdNPD);
    assertThat(
        "NPE should not be found", inferResults,
        doesNotContain(
            NULL_DEREFERENCE,
            NPE_FILE,
            "isEqual:"));
  }


}