Moq 4.21.0
The most popular and friendly mocking library for .NET
var mock = new Mock<ILoveThisLibrary>();
// WOW! No record/replay weirdness?! :)
mock.Setup(library => library.DownloadExists("2.0.0.0"))
.Returns(true);
// Use the Object property on the mock to get a reference to the object
// implementing ILoveThisLibrary, and then exercise it by calling
// methods on it
ILoveThisLibrary lovable = mock.Object;
bool download = lovable.DownloadExists("2.0.0.0");
// Verify that the given method was indeed called with the expected value at most once
mock.Verify(library => library.DownloadExists("2.0.0.0"), Times.AtMostOnce());
Moq also is the first and only library so far to provide Linq to Mocks, so that the same behavior above can be achieved much more succinctly:
ILoveThisLibrary lovable = Mock.Of<ILoveThisLibrary>(l =>
l.DownloadExists("2.0.0.0") == true);
// Exercise the instance returned by Mock.Of by calling methods on it...
bool download = lovable.DownloadExists("2.0.0.0");
// Simply assert the returned state:
Assert.True(download);
// If you want to go beyond state testing and want to
// verify the mock interaction instead...
Mock.Get(lovable).Verify(library => library.DownloadExists("2.0.0.0"));
You can think of Linq to Mocks as "from the universe of mocks, give me one whose behavior matches this expression".
Check out the Quickstart for more examples!
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No packages depend on Moq.
.NET Framework 4.6.2
- Castle.Core (>= 5.2.1)
- System.Threading.Tasks.Extensions (>= 4.6.3)
.NET Standard 2.0
- Castle.Core (>= 5.2.1)
- System.Threading.Tasks.Extensions (>= 4.6.3)
.NET Standard 2.1
- Castle.Core (>= 5.2.1)
.NET 6.0
- Castle.Core (>= 5.2.1)
| Version | Downloads | Last updated |
|---|---|---|
| 4.21.0 | 2 | 26.09.2026 |
| 4.20.72 | 25 | 11.09.2024 |
| 4.20.70 | 22 | 14.03.2025 |
| 4.20.69 | 20 | 14.03.2025 |
| 4.18.4 | 19 | 14.03.2025 |
| 4.18.3 | 19 | 14.03.2025 |
| 4.18.2 | 18 | 14.03.2025 |
| 4.18.1 | 19 | 14.03.2025 |
| 4.18.0 | 18 | 14.03.2025 |
| 4.17.2 | 20 | 14.03.2025 |
| 4.17.1 | 18 | 14.03.2025 |
| 4.16.1 | 18 | 14.03.2025 |
| 4.16.0 | 19 | 14.03.2025 |
| 4.15.2 | 21 | 14.03.2025 |
| 4.15.1 | 16 | 14.03.2025 |
| 4.14.7 | 19 | 14.03.2025 |
| 4.14.6 | 18 | 14.03.2025 |
| 4.14.5 | 19 | 14.03.2025 |
| 4.14.4 | 17 | 14.03.2025 |
| 4.14.3 | 19 | 14.03.2025 |
| 4.14.2 | 19 | 14.03.2025 |
| 4.14.1 | 19 | 14.03.2025 |
| 4.14.0 | 18 | 14.03.2025 |
| 4.13.1 | 18 | 14.03.2025 |
| 4.13.0 | 19 | 14.03.2025 |
| 4.12.0 | 19 | 14.03.2025 |
| 4.11.0 | 18 | 14.03.2025 |
| 4.11.0-rc2 | 19 | 14.03.2025 |
| 4.11.0-rc1 | 18 | 14.03.2025 |
| 4.10.1 | 20 | 14.03.2025 |
| 4.10.0 | 17 | 14.03.2025 |
| 4.9.0 | 19 | 14.03.2025 |
| 4.8.3 | 20 | 14.03.2025 |
| 4.8.2 | 18 | 14.03.2025 |
| 4.8.1 | 18 | 14.03.2025 |
| 4.8.0 | 17 | 14.03.2025 |
| 4.8.0-rc1 | 20 | 15.03.2025 |
| 4.7.145 | 20 | 14.03.2025 |
| 4.7.142 | 20 | 14.03.2025 |
| 4.7.137 | 15 | 14.03.2025 |
| 4.7.127 | 20 | 14.03.2025 |
| 4.7.99 | 17 | 14.03.2025 |
| 4.7.63 | 19 | 14.03.2025 |
| 4.7.58 | 19 | 14.03.2025 |
| 4.7.49 | 18 | 14.03.2025 |
| 4.7.46 | 13 | 14.03.2025 |
| 4.7.25 | 19 | 14.03.2025 |
| 4.7.12 | 17 | 14.03.2025 |
| 4.7.11 | 17 | 14.03.2025 |
| 4.7.10 | 19 | 14.03.2025 |
| 4.7.9 | 18 | 14.03.2025 |
| 4.7.8 | 20 | 14.03.2025 |
| 4.7.7 | 18 | 14.03.2025 |
| 4.7.1 | 18 | 14.03.2025 |
| 4.7.0 | 18 | 14.03.2025 |
| 4.6.62-alpha | 20 | 14.03.2025 |
| 4.6.39-alpha | 20 | 14.03.2025 |
| 4.6.38-alpha | 19 | 14.03.2025 |
| 4.6.36-alpha | 19 | 14.03.2025 |
| 4.6.25-alpha | 20 | 14.03.2025 |
| 4.5.30 | 17 | 14.03.2025 |
| 4.5.29 | 18 | 14.03.2025 |
| 4.5.28 | 18 | 14.03.2025 |
| 4.5.23 | 18 | 14.03.2025 |
| 4.5.22 | 15 | 14.03.2025 |
| 4.5.21 | 18 | 14.03.2025 |
| 4.5.20 | 16 | 14.03.2025 |
| 4.5.19 | 19 | 14.03.2025 |
| 4.5.18 | 19 | 14.03.2025 |
| 4.5.16 | 19 | 14.03.2025 |
| 4.5.13 | 18 | 14.03.2025 |
| 4.5.10 | 21 | 14.03.2025 |
| 4.5.9 | 19 | 14.03.2025 |
| 4.5.9-alpha | 20 | 14.03.2025 |
| 4.5.8 | 20 | 14.03.2025 |
| 4.5.7 | 18 | 14.03.2025 |
| 4.5.7-alpha | 20 | 14.03.2025 |
| 4.5.6-alpha | 19 | 14.03.2025 |
| 4.5.3 | 19 | 14.03.2025 |
| 4.5.0 | 17 | 14.03.2025 |
| 4.2.1510.2205 | 15 | 14.03.2025 |
| 4.2.1507.118 | 22 | 14.03.2025 |
| 4.2.1506.2515 | 21 | 14.03.2025 |
| 4.2.1506.2016 | 21 | 14.03.2025 |
| 4.2.1502.911 | 21 | 14.03.2025 |
| 4.2.1409.1722 | 20 | 14.03.2025 |
| 4.2.1408.717 | 20 | 14.03.2025 |
| 4.2.1408.619 | 21 | 14.03.2025 |
| 4.2.1402.2112 | 21 | 14.03.2025 |
| 4.2.1312.1622 | 20 | 14.03.2025 |
| 4.2.1312.1621 | 18 | 14.03.2025 |
| 4.2.1312.1615 | 19 | 14.03.2025 |
| 4.2.1312.1416 | 21 | 14.03.2025 |
| 4.2.1312.1323 | 22 | 14.03.2025 |
| 4.2.1312.1319 | 21 | 14.03.2025 |
| 4.1.1311.615 | 21 | 14.03.2025 |
| 4.1.1309.1617 | 21 | 14.03.2025 |
| 4.1.1309.919 | 18 | 14.03.2025 |
| 4.1.1309.801 | 22 | 14.03.2025 |
| 4.1.1309.800 | 23 | 14.03.2025 |
| 4.1.1308.2321 | 20 | 14.03.2025 |
| 4.1.1308.2316 | 20 | 14.03.2025 |
| 4.1.1308.2120 | 21 | 14.03.2025 |
| 4.0.10827 | 20 | 14.03.2025 |
| 3.1.416.3 | 19 | 14.03.2025 |