ConnectivityStateInfoTest.java

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package io.grpc;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNotSame;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Unit tests for {@link ConnectivityStateInfo}. */
@RunWith(JUnit4.class)
public class ConnectivityStateInfoTest {
  @Test
  public void forNonError() {
    ConnectivityStateInfo info = ConnectivityStateInfo.forNonError(ConnectivityState.IDLE);
    assertEquals(ConnectivityState.IDLE, info.getState());
    assertEquals(Status.OK, info.getStatus());
  }

  @Test(expected = IllegalArgumentException.class)
  public void forNonErrorInvalid() {
    ConnectivityStateInfo.forNonError(ConnectivityState.TRANSIENT_FAILURE);
  }

  @Test
  public void forTransientFailure() {
    ConnectivityStateInfo info = ConnectivityStateInfo.forTransientFailure(Status.UNAVAILABLE);
    assertEquals(ConnectivityState.TRANSIENT_FAILURE, info.getState());
    assertEquals(Status.UNAVAILABLE, info.getStatus());
  }

  @Test(expected = IllegalArgumentException.class)
  public void forTransientFailureInvalid() {
    ConnectivityStateInfo.forTransientFailure(Status.OK);
  }

  @Test
  public void equality() {
    ConnectivityStateInfo info1 = ConnectivityStateInfo.forNonError(ConnectivityState.IDLE);
    ConnectivityStateInfo info2 = ConnectivityStateInfo.forNonError(ConnectivityState.CONNECTING);
    ConnectivityStateInfo info3 = ConnectivityStateInfo.forNonError(ConnectivityState.IDLE);
    ConnectivityStateInfo info4 = ConnectivityStateInfo.forTransientFailure(Status.UNAVAILABLE);
    ConnectivityStateInfo info5 = ConnectivityStateInfo.forTransientFailure(Status.INTERNAL);
    ConnectivityStateInfo info6 = ConnectivityStateInfo.forTransientFailure(Status.INTERNAL);

    assertEquals(info1, info3);
    assertNotSame(info1, info3);
    assertEquals(info1.hashCode(), info3.hashCode());
    assertEquals(info5, info6);
    assertEquals(info5.hashCode(), info6.hashCode());
    assertNotSame(info5, info6);

    assertNotEquals(info1, info2);
    assertNotEquals(info1, info4);
    assertNotEquals(info4, info6);

    assertFalse(info1.equals(null));
    // Extra cast to avoid ErrorProne EqualsIncompatibleType failure
    assertFalse(((Object) info1).equals(this));
  }
}