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Telerik JustMock

Mock LINQ Queries

  • JustMock enables you to easily mock LINQ queries to isolate parts of your code from their dependencies.
  • Part of the fastest, most flexible and complete mocking tool for crafting unit tests.
  • Our award-winning support team is available to assist you with any issues.
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  • Mocking LINQ Queries Overview

    Language-integrated queries, also known as LINQ, are a set of technologies based on integrating query capabilities directly into the C# & VB languages. They are very popular and widely used thanks to offering a common syntax for querying any type of data source, decreasing  development time by catching errors at compile-time, etc.

    JustMock enables you to easily mock LINQ queries to isolate parts of your code from their dependencies.
    [TestMethod]
    

    public void ShouldAssertWithCustomSelect()
    

    {
    

        var simpleDataInstance = new SimpleData();
    

     
    

        // ARRANGE - When simpleDataInstance.Products_GET is called, 
    

        //           it should return expected collection.
    

        Mock.Arrange(() => simpleDataInstance.Products)
    

            .ReturnsCollection(ReturnExpextedCollectionOfProducts());
    

     
    

        // ACT - Applying a LINQ query for simpleDataMock.Products.
    

        var actual = (from p in simpleDataInstance.Products
    

                      where p.UnitsInStock == 50
    

                      select p.ProductID).SingleOrDefault();
    

     
    

        // ASSERT
    

        Assert.AreEqual(2, actual);
    

    }

    Mocking LINQ Queries documentation
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