public void TestDTypes()
{
// Arrange
const string columnName = "column1";
const string columnType = "string";
var mockSchemaProxy = new Mock <IStructTypeProxy>();
var mockFieldProxy = new Mock <IStructFieldProxy>();
var mockStructDataTypeProxy = new Mock <IStructDataTypeProxy>();
var expectedResultDataFrameProxy = new Mock <IDataFrameProxy>().Object;
mockDataFrameProxy.Setup(m => m.DropNa(It.IsAny <int?>(), It.IsAny <string[]>())).Returns(expectedResultDataFrameProxy);
mockDataFrameProxy.Setup(m => m.GetSchema()).Returns(mockSchemaProxy.Object);
mockSchemaProxy.Setup(m => m.GetStructTypeFields()).Returns(new List <IStructFieldProxy> {
mockFieldProxy.Object
});
mockFieldProxy.Setup(m => m.GetStructFieldName()).Returns(columnName);
mockFieldProxy.Setup(m => m.GetStructFieldDataType()).Returns(mockStructDataTypeProxy.Object);
mockStructDataTypeProxy.Setup(m => m.GetDataTypeSimpleString()).Returns(columnType);
var sc = new SparkContext(null);
// Act
var originalDataFrame = new DataFrame(mockDataFrameProxy.Object, sc);
var actualColumnNameAndDataType = originalDataFrame.DTypes().ToArray();
// Assert
Assert.AreEqual(1, actualColumnNameAndDataType.Length);
Assert.AreEqual(columnName, actualColumnNameAndDataType[0].Item1);
Assert.AreEqual(columnType, actualColumnNameAndDataType[0].Item2);
}