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using System;
using System.Collections.Generic;
using System.Text;
using Google.ProtocolBuffers.TestProtos;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace Google.ProtocolBuffers
{
[TestClass]
public class GeneratedBuilderTest
{
class OneTimeEnumerator<T> : IEnumerable<T>
{
readonly T _item;
bool _enumerated;
public OneTimeEnumerator(T item)
{
_item = item;
}
public IEnumerator<T> GetEnumerator()
{
Assert.IsFalse(_enumerated, "The collection {0} has already been enumerated", GetType());
_enumerated = true;
yield return _item;
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{ return GetEnumerator(); }
}
[TestMethod]
public void DoesNotEnumerateTwiceForMessageList()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
b.AddRangeRepeatedForeignMessage(
new OneTimeEnumerator<ForeignMessage>(
ForeignMessage.DefaultInstance));
}
[TestMethod]
public void DoesNotEnumerateTwiceForPrimitiveList()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
b.AddRangeRepeatedInt32(new OneTimeEnumerator<int>(1));
}
[TestMethod]
public void DoesNotEnumerateTwiceForStringList()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
b.AddRangeRepeatedString(new OneTimeEnumerator<string>("test"));
}
[TestMethod]
public void DoesNotEnumerateTwiceForEnumList()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
b.AddRangeRepeatedForeignEnum(new OneTimeEnumerator<ForeignEnum>(ForeignEnum.FOREIGN_BAR));
}
private delegate void TestMethod();
private static void AssertThrows<T>(TestMethod method) where T : Exception
{
try
{
method();
}
catch (Exception error)
{
if (error is T)
return;
throw;
}
Assert.Fail("Expected exception of type " + typeof(T));
}
[TestMethod]
public void DoesNotAddNullToMessageListByAddRange()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
AssertThrows<ArgumentNullException>(
() => b.AddRangeRepeatedForeignMessage(new ForeignMessage[] { null })
);
}
[TestMethod]
public void DoesNotAddNullToMessageListByAdd()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
AssertThrows<ArgumentNullException>(
() => b.AddRepeatedForeignMessage((ForeignMessage)null)
);
}
[TestMethod]
public void DoesNotAddNullToMessageListBySet()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
b.AddRepeatedForeignMessage(ForeignMessage.DefaultInstance);
AssertThrows<ArgumentNullException>(
() => b.SetRepeatedForeignMessage(0, (ForeignMessage)null)
);
}
[TestMethod]
public void DoesNotAddNullToStringListByAddRange()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
AssertThrows<ArgumentNullException>(
() => b.AddRangeRepeatedString(new String[] { null })
);
}
[TestMethod]
public void DoesNotAddNullToStringListByAdd()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
AssertThrows<ArgumentNullException>(
() => b.AddRepeatedString(null)
);
}
[TestMethod]
public void DoesNotAddNullToStringListBySet()
{
TestAllTypes.Builder b = new TestAllTypes.Builder();
b.AddRepeatedString("one");
AssertThrows<ArgumentNullException>(
() => b.SetRepeatedString(0, null)
);
}
}
}
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