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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
namespace System.Data.Entity.Infrastructure
{
using System.Collections;
using System.Collections.Generic;
using System.Data.Entity.Core.Objects.ELinq;
using System.Data.Entity.Internal;
using System.Data.Entity.Internal.Linq;
using System.Data.Entity.Resources;
using System.Linq;
using System.Linq.Expressions;
using Moq;
using Xunit;
using MockHelper = System.Data.Entity.Core.Objects.MockHelper;
public class DbQueryTests : TestBase
{
[Fact]
public void String_Include_with_null_string_called_on_actual_DbQuery_throws()
{
Assert.Equal(
Strings.ArgumentIsNullOrWhitespace("path"),
Assert.Throws<ArgumentException>(() =>
new DbQuery<object>(new Mock<IInternalQuery<object>>().Object).Include(null)).Message);
}
[Fact]
public void String_Include_with_empty_string_called_on_actual_DbQuery_throws()
{
Assert.Equal(
Strings.ArgumentIsNullOrWhitespace("path"),
Assert.Throws<ArgumentException>(() =>
new DbQuery<object>(new Mock<IInternalQuery<object>>().Object).Include("")).Message);
}
[Fact]
public void String_Include_with_whitespace_string_called_on_actual_DbQuery_throws()
{
Assert.Equal(
Strings.ArgumentIsNullOrWhitespace("path"),
Assert.Throws<ArgumentException>(() =>
new DbQuery<object>(new Mock<IInternalQuery<object>>().Object).Include(" ")).Message);
}
[Fact]
public void Non_generic_String_Include_with_null_string_called_on_actual_DbQuery_throws()
{
Assert.Equal(
Strings.ArgumentIsNullOrWhitespace("path"),
Assert.Throws<ArgumentException>(() =>
new InternalDbQuery<object>(new Mock<IInternalQuery<object>>().Object).Include(null)).Message);
}
[Fact]
public void Non_generic_String_Include_with_empty_string_called_on_actual_DbQuery_throws()
{
Assert.Equal(
Strings.ArgumentIsNullOrWhitespace("path"),
Assert.Throws<ArgumentException>(() =>
new InternalDbQuery<object>(new Mock<IInternalQuery<object>>().Object).Include("")).Message);
}
[Fact]
public void Non_generic_String_Include_with_whitespace_string_called_on_actual_DbQuery_throws()
{
Assert.Equal(
Strings.ArgumentIsNullOrWhitespace("path"),
Assert.Throws<ArgumentException>(() =>
new InternalDbQuery<object>(new Mock<IInternalQuery<object>>().Object).Include(" ")).Message);
}
[Fact]
public void Methods_delegate_to_underlying_InternalQuery_correctly()
{
#if !NET40
VerifyMethod(
q => ((IDbAsyncEnumerable)q).GetAsyncEnumerator(),
m => m.GetAsyncEnumerator());
VerifyMethod(
q => ((IDbAsyncEnumerable<string>)q).GetAsyncEnumerator(),
m => m.GetAsyncEnumerator());
#endif
VerifyMethod(
q => ((IEnumerable<string>)q).GetEnumerator(),
m => m.GetEnumerator());
VerifyMethod(
q => q.AsNoTracking(),
m => m.AsNoTracking());
VerifyMethod(
q => q.Include("a"),
m => m.Include("a"));
}
[Fact]
public void Properties_delegate_to_underlying_InternalQuery_correctly()
{
VerifyGetter(
q => ((IQueryable)q).ElementType,
m => m.ElementType);
VerifyGetter(
q => ((IQueryable)q).Expression,
m => m.Expression);
VerifyGetter(
q => ((IQueryable)q).Provider,
m => m.ObjectQueryProvider);
}
[Fact]
public void NonGeneric_methods_delegate_to_underlying_InternalQuery_correctly()
{
var internalQueryMock = new Mock<IInternalQuery<string>>();
var nonGenericInternalQueryMock = internalQueryMock.As<IInternalQuery>();
nonGenericInternalQueryMock.Setup(m => m.GetEnumerator()).Returns(new Mock<IEnumerator>().Object);
var dbQuery = new DbQuery<string>(internalQueryMock.Object);
#if !NET40
((IDbAsyncEnumerable)(DbQuery)dbQuery).GetAsyncEnumerator();
nonGenericInternalQueryMock.Verify(m => m.GetAsyncEnumerator(), Times.Once());
#endif
((IEnumerable)(DbQuery)dbQuery).GetEnumerator();
nonGenericInternalQueryMock.Verify(m => m.GetEnumerator(), Times.Once());
}
private void VerifyGetter<TProperty>(
Func<DbQuery<string>, TProperty> getterFunc,
Expression<Func<IInternalQuery<string>, TProperty>> mockGetterFunc)
{
Assert.NotNull(getterFunc);
Assert.NotNull(mockGetterFunc);
var internalQueryMock = new Mock<IInternalQuery<string>>();
internalQueryMock.Setup(m => m.ElementType).Returns(typeof(string));
internalQueryMock.Setup(m => m.Expression).Returns(Expression.Constant(new object()));
internalQueryMock.Setup(m => m.InternalContext).Returns(new Mock<InternalContextForMock<DbContext>>().Object);
internalQueryMock.Setup(m => m.ObjectQueryProvider).Returns(
new ObjectQueryProvider(MockHelper.CreateMockObjectContext<string>()));
var dbQuery = new DbQuery<string>(internalQueryMock.Object);
getterFunc(dbQuery);
internalQueryMock.VerifyGet(mockGetterFunc, Times.Once());
}
private void VerifyMethod(Action<DbQuery<string>> methodInvoke, Expression<Action<IInternalQuery<string>>> mockMethodInvoke)
{
Assert.NotNull(methodInvoke);
Assert.NotNull(mockMethodInvoke);
var internalQueryMock = new Mock<IInternalQuery<string>>();
internalQueryMock.Setup(m => m.GetEnumerator()).Returns(new Mock<IEnumerator<string>>().Object);
internalQueryMock.Setup(m => m.AsNoTracking()).Returns(internalQueryMock.Object);
internalQueryMock.Setup(m => m.Include(It.IsAny<string>())).Returns(internalQueryMock.Object);
var dbQuery = new DbQuery<string>(internalQueryMock.Object);
methodInvoke(dbQuery);
internalQueryMock.Verify(mockMethodInvoke, Times.Once());
}
}
}
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