NSubstitute

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How to keep unit tests passing when adding an optional argument to an interface

11

**Question** How can I ensure that verifying calls does not break when adding optional arguments to an interface? Adding an optional argument to an interface is one way of adding...

CrispyDrone

Way to call base implementation when overriding a method on a partial substitute

15

**Is your feature request related to a problem? Please describe.** I have a situation with a partial mock where I want to make use of the existing implementation, but intercept...

logiclrd

Registering actions does not suppress base method call on partial mocks

4

**Is your feature request related to a problem? Please describe.** When doing a partial substitute, overriding a method with `.Returns(..)` implicitly suppresses any invocation of the base method implementation. But,...

logiclrd

Odd behaviour with `StackExchange.Redis` types

10

**Describe the bug** NSubstitute behaving oddly with `StackExchange.Redis` library. Ilya Chernomordik on StackOverflow [reports a `TypeLoadException`](https://stackoverflow.com/q/60720540/906) in DynamicProxy-generated `RedisResultProxy`. This type isn't explicitly configured, I'm guessing it is from a...

dtchepak

Exception thrown from async Received.InOrder() crashes NUnit

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The following test crashes NUnit: ```csharp [Test] public void Test1() { Received.InOrder(async () => { throw new Exception(); }); } ``` If I remove the `async` keyword, then the exception...

grzesiek-galezowski

Support for ref returns

7

C# 7.0 added support for [ref returns](https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/ref-returns). I tried to mock the value of one such method via `.Returns`, but got the following: `System.InvalidProgramException : Invalid IL code in Castle.Proxies.IPlayerManagerProxy:get_PlayerInfo...

metakirby5

Docs: fix overridable member documentation

1

From https://github.com/nsubstitute/NSubstitute/issues/222#issuecomment-557198534, saying `protected virtual` is substitutable is misleading. While technically possible (hacky) with the current API, it's not something we encourage and people should not expect to mock these...

dtchepak

Overload Substitute.ForPartsOf to use Expression<Func<T>>

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Partial substitute could be created in a type-safe manner: `ForPartsOf(Expression constructorExpression)` Constructor parsed to determine constructor method and arguments. Before: `Substitute.ForPartsOf(ctorArg1, ctorArg2);` After: `Substitute.ForPartsOf(() => new MyClass(ctorArg1, ctorArg2));` Benefits: static...

DunetsNM

No error thrown when missing binding redirect in the expression of Arg.Is()

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**Describe the bug** When there is a missing binding redirect, the mock does not throw an error when evaluating with Arg.Is(), which make it hard to debug the issue. It...

doxakis

v4.2.1: Received.InOrder ignores .Returns()

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**Describe the bug** **Received.InOrder** ignores/bypasses any .Returns() configured call. All calls inside return their default result. This leads to failing Received tests, as the expected result isn't called. This bug...

Reris