Respond to changes of master branch

* Add type check to CompareArrays for ListType
* Add ListArray test data to TestData

Author: takashi hashida

csharp/test/Apache.Arrow.Tests/ArrowReaderVerifier.cs

@@ -239,6 +239,8 @@ private void CompareArrays(ListArray actualArray)
                 Assert.IsAssignableFrom<ListArray>(_expectedArray);
                 ListArray expectedArray = (ListArray)_expectedArray;
 
+                _arrayTypeComparer.Visit(actualArray.Data.DataType);
+
                 Assert.Equal(expectedArray.Length, actualArray.Length);
                 Assert.Equal(expectedArray.NullCount, actualArray.NullCount);
                 Assert.Equal(expectedArray.Offset, actualArray.Offset);

csharp/test/Apache.Arrow.Tests/TestData.cs

@@ -52,6 +52,8 @@ public static RecordBatch CreateSampleRecordBatch(int length, int columnSetCount
                 //builder.Field(CreateField(StringType.Default));
                 //builder.Field(CreateField(Time32Type.Default));
                 //builder.Field(CreateField(Time64Type.Default));
+
+                builder.Field(CreateField(new ListType(Int64Type.Default), i));
             }
 
             Schema schema = builder.Build();
@@ -102,7 +104,8 @@ private class ArrayCreator :
             IArrowTypeVisitor<FloatType>,
             IArrowTypeVisitor<DoubleType>,
             IArrowTypeVisitor<TimestampType>,
-            IArrowTypeVisitor<StringType>
+            IArrowTypeVisitor<StringType>,
+            IArrowTypeVisitor<ListType>
         {
             private int Length { get; }
             public IArrowArray Array { get; private set; }
@@ -176,6 +179,21 @@ public void Visit(StringType type)
                 Array = builder.Build();
             }
 
+            public void Visit(ListType type)
+            {
+                //Todo : Use ListArray.Builder
+                var children = new [] { CreateArray(type.ValueField, Length).Data };
+                ArrowBuffer.Builder<int> builder = new ArrowBuffer.Builder<int>(Length);
+                for (int i = 0; i < Length; i++)
+                {
+                    builder.Append(i);
+                }
+
+                var valueOffsetsBuffer = builder.Build();
+                Array = new ListArray(new ArrayData(type, Length, 0, 0,
+                    new[] { ArrowBuffer.Empty, valueOffsetsBuffer }, children));
+            }
+
             private void GenerateArray<T, TArray, TArrayBuilder>(IArrowArrayBuilder<T, TArray, TArrayBuilder> builder, Func<int, T> generator)
                 where TArrayBuilder : IArrowArrayBuilder<T, TArray, TArrayBuilder>
                 where TArray : IArrowArray