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 */

import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;

import io.grpc.Status;
import io.grpc.transport.HttpUtil.Http2Error;

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

/** Unit tests for {@link HttpUtil}. */
@RunWith(JUnit4.class)
public class HttpUtilTest {
  @Test
  public void http2ErrorForCode() {
    // Try edge cases manually, to make the test obviously correct for important cases.
    assertNull(Http2Error.forCode(-1));
    assertSame(Http2Error.NO_ERROR, Http2Error.forCode(0));
    assertSame(Http2Error.HTTP_1_1_REQUIRED, Http2Error.forCode(0xD));
    assertNull(Http2Error.forCode(0xD + 1));
  }

  @Test
  public void http2ErrorRoundTrip() {
    for (Http2Error error : Http2Error.values()) {
      assertSame(error, Http2Error.forCode(error.code()));
    }
  }

  @Test
  public void http2ErrorStatus() {
    // Nothing special about this particular error, except that it is slightly distinctive.
    assertSame(Status.Code.CANCELLED, Http2Error.CANCEL.status().getCode());
  }

  @Test
  public void http2ErrorNoCodeStatus() {
    assertSame(Status.Code.INTERNAL, Http2Error.statusForCode(-1).getCode());
    assertSame(Status.Code.INTERNAL, Http2Error.statusForCode(0xD + 1).getCode());
  }
}

@@ -2665,20 +2665,21 @@
 rror
-NoCode
 Status
+ForCode
 () %7B
@@ -2753,24 +2753,185 @@
 getCode());%0A
+    assertSame(Http2Error.NO_ERROR.status(), Http2Error.statusForCode(0));%0A    assertSame(Http2Error.HTTP_1_1_REQUIRED.status(), Http2Error.statusForCode(0xD));%0A
     assertSa

Add two extra cases to make edge case testing more obvious.