core/src/test/java/io/grpc/ServiceDescriptorTest.java

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package io.grpc;

import io.grpc.MethodDescriptor.MethodType;
import io.grpc.testing.TestMethodDescriptors;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;

/**
 * Tests for {@link ServiceDescriptor}.
 */
@RunWith(JUnit4.class)
public class ServiceDescriptorTest {

  @Rule
  public final ExpectedException thrown = ExpectedException.none();

  @Test
  public void failsOnNullName() {
    thrown.expect(NullPointerException.class);
    thrown.expectMessage("name");

    new ServiceDescriptor(null, Collections.emptyList());
  }

  @Test
  public void failsOnNullMethods() {
    thrown.expect(NullPointerException.class);
    thrown.expectMessage("methods");

    new ServiceDescriptor("name", (Collection<MethodDescriptor<?, ?>>)null);
  }

  @Test
  public void failsOnNonMatchingNames() {
    thrown.expect(IllegalArgumentException.class);
    thrown.expectMessage("service names");

    new ServiceDescriptor("name", Collections.<MethodDescriptor<?, ?>>singletonList(
        MethodDescriptor.create(
            MethodType.UNARY,
            MethodDescriptor.generateFullMethodName("wrongservice", "method"),
            TestMethodDescriptors.noopMarshaller(),
            TestMethodDescriptors.noopMarshaller())));
  }

  @Test
  public void failsOnNonDuplicateNames() {
    thrown.expect(IllegalArgumentException.class);
    thrown.expectMessage("duplicate");

    new ServiceDescriptor("name", Arrays.<MethodDescriptor<?, ?>>asList(
        MethodDescriptor.create(
            MethodType.UNARY,
            MethodDescriptor.generateFullMethodName("name", "method"),
            TestMethodDescriptors.noopMarshaller(),
            TestMethodDescriptors.noopMarshaller()),
        MethodDescriptor.create(
            MethodType.UNARY,
            MethodDescriptor.generateFullMethodName("name", "method"),
            TestMethodDescriptors.noopMarshaller(),
            TestMethodDescriptors.noopMarshaller())));
  }
}