import quincy 17.2.0

[ceph.git] / ceph / src / arrow / csharp / test / Apache.Arrow.Tests / ColumnTests.cs

diff --git a/ceph/src/arrow/csharp/test/Apache.Arrow.Tests/ColumnTests.cs b/ceph/src/arrow/csharp/test/Apache.Arrow.Tests/ColumnTests.cs
new file mode 100644 (file)
index 0000000..b90c681
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+++ b/ceph/src/arrow/csharp/test/Apache.Arrow.Tests/ColumnTests.cs
@@ -0,0 +1,58 @@
+// Licensed to the Apache Software Foundation (ASF) under one or more
+// contributor license agreements. See the NOTICE file distributed with
+// this work for additional information regarding copyright ownership.
+// The ASF licenses this file to You under the Apache License, Version 2.0
+// (the "License"); you may not use this file except in compliance with
+// the License.  You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System.Linq;
+using Apache.Arrow.Types;
+using Xunit;
+
+namespace Apache.Arrow.Tests
+{
+    public class ColumnTests
+    {
+        public static Array MakeIntArray(int length)
+        {
+            // The following should be improved once the ArrayBuilder PR goes in
+            var intBuilder = new ArrowBuffer.Builder<int>();
+            intBuilder.AppendRange(Enumerable.Range(0, length).Select(x => x));
+            ArrowBuffer buffer = intBuilder.Build();
+            ArrayData intData = new ArrayData(Int32Type.Default, length, 0, 0, new[] { ArrowBuffer.Empty, buffer });
+            Array intArray = ArrowArrayFactory.BuildArray(intData) as Array;
+            return intArray;
+        }
+
+        [Fact]
+        public void TestColumn()
+        {
+            Array intArray = MakeIntArray(10);
+            Array intArrayCopy = MakeIntArray(10);
+
+            Field field = new Field.Builder().Name("f0").DataType(Int32Type.Default).Build();
+            Column column = new Column(field, new[] { intArray, intArrayCopy });
+
+            Assert.True(column.Name == field.Name);
+            Assert.True(column.Field == field);
+            Assert.Equal(20, column.Length);
+            Assert.Equal(0, column.NullCount);
+            Assert.Equal(field.DataType, column.Type);
+            
+            Column slice5 = column.Slice(0, 5);
+            Assert.Equal(5, slice5.Length);
+            Column sliceFull = column.Slice(2);
+            Assert.Equal(18, sliceFull.Length);
+            Column sliceMore = column.Slice(0, 25);
+            Assert.Equal(20, sliceMore.Length);
+        }
+    }
+}