/*
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * contributors may be used to endorse or promote products derived from
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package com.google.api.gax.grpc;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;

import com.google.common.collect.ImmutableMap;
import io.grpc.CallOptions;
import io.grpc.Metadata.Key;
import java.util.Map;
import org.junit.Test;

public class CallOptionsUtilTest {
  @Test
  public void testPutAndGetDynamicHeaderOption() {
    String encodedRequestParams = "param1=value&param2.param3=value23";
    CallOptions options =
        CallOptionsUtil.putRequestParamsDynamicHeaderOption(
            CallOptions.DEFAULT, encodedRequestParams);

    Map<Key<String>, String> headers = CallOptionsUtil.getDynamicHeadersOption(options);

    assertEquals(
        ImmutableMap.of(CallOptionsUtil.REQUEST_PARAMS_HEADER_KEY, encodedRequestParams), headers);
  }

  @Test
  public void testPutAndGetDynamicHeaderOptionEmpty() {
    CallOptions options =
        CallOptionsUtil.putRequestParamsDynamicHeaderOption(CallOptions.DEFAULT, "");
    assertSame(CallOptions.DEFAULT, options);
    Map<Key<String>, String> headers = CallOptionsUtil.getDynamicHeadersOption(options);
    assertTrue(headers.isEmpty());
  }

  @Test(expected = NullPointerException.class)
  public void testPutAndGetHeaderOptionNull() {
    CallOptionsUtil.putRequestParamsDynamicHeaderOption(CallOptions.DEFAULT, null);
  }
}