public void LinqSelectWithProjectionClass()
{
// Arrange
IQueryable<ProjectionResult> query = GetQueryable()
.Select(p => new ProjectionResult {Name = p.Name, Continent = p.Continent, Area = p.Area});
var translator = new SelectTranslator(_nameChanges);
var translation = new TranslationResult();
// Act && Assert
translator.Translate((MethodCallExpression) query.Expression, translation);
Assert.NotNull(translation.TableQuery);
Assert.NotNull(translation.TableQuery.SelectColumns);
Assert.Equal(3, translation.TableQuery.SelectColumns.Count);
Assert.Contains("PartitionKey", translation.TableQuery.SelectColumns);
Assert.Contains("RowKey", translation.TableQuery.SelectColumns);
Assert.Contains("Area", translation.TableQuery.SelectColumns);
object result = translation.PostProcessing.DynamicInvoke(GetList().AsQueryable());
Assert.NotNull(result);
Assert.IsAssignableFrom<IEnumerable<ProjectionResult>>(result);
List<ProjectionResult> entities = ((IEnumerable<ProjectionResult>) result).ToList();
IEnumerable<string> names = entities.Select(p => p.Name).ToList();
Assert.Contains(Germany, names);
Assert.Contains(Spain, names);
}
public void LinqSelectWithInvalidMethod()
{
// Arrange
IQueryable<Country> query = GetQueryable().Where(p => p.Name == string.Empty);
var translator = new SelectTranslator(_nameChanges);
var translation = new TranslationResult();
// Act && Assert
Assert.Throws<ArgumentOutOfRangeException>(() => translator.Translate((MethodCallExpression) query.Expression, translation));
Assert.NotNull(translation.TableQuery);
Assert.Null(translation.TableQuery.SelectColumns);
}
public void LinqSelectWithAnonymousType()
{
// Arrange
var query = GetQueryable().Select(p => new {p.Name, p.Continent});
var translator = new SelectTranslator(_nameChanges);
var translation = new TranslationResult();
// Act && Assert
translator.Translate((MethodCallExpression) query.Expression, translation);
Assert.NotNull(translation.TableQuery);
Assert.NotNull(translation.TableQuery.SelectColumns);
Assert.Equal(2, translation.TableQuery.SelectColumns.Count);
Assert.Contains("PartitionKey", translation.TableQuery.SelectColumns);
Assert.Contains("RowKey", translation.TableQuery.SelectColumns);
object result = translation.PostProcessing.DynamicInvoke(GetList().AsQueryable());
Assert.NotNull(result);
Assert.IsAssignableFrom<IEnumerable<object>>(result);
}
