ErrLookup › devlooped/moq
devlooped/moq
The most popular and friendly mocking framework for .NET · C# · 243 source files
Analyzed at 89a5be629c on 2026-09-16. 77 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| ArgumentOutOfRangeException: callCount | validation | error | argument-out-of-range, moq, verification |
| callback (Argument is null) | exception | error | moq, null-argument, callback, argumentnull |
| Unsupported expression | exception | error | moq, expression-tree, unsupported-expression |
| Use the new syntax, which allows you to pass the value in… | exception | error | moq, obsolete-api, verifyset, compile-error |
| A matching constructor for the given arguments was not… | exception | error | moq, mocking, constructor, missing-method, csharp |
| Unhandled expression type | exception | error | expression-tree, moq, unsupported-syntax |
| Type does not have matching protected member | exception | error | moq, reflection, protected-members, signature-mismatch |
| Unsupported expression | exception | error | moq, linq-expressions, argument-exception, setup |
| Type to mock ( ) must be an interface, a delegate, or a… | exception | error | moq, mocking, sealed-class, proxy-generation, csharp |
| Resources.AlreadyInitialized | exception | error | moq, invalid-state, as-interface, lifecycle |
| Member . does not exist. | exception | error | moq, reflection, protected-members, typo |
| Could not determine the correct positions for all argument… | exception | error | moq, argument-matchers, type-conversion, bug |
| ex.Message from ReplaceDuck expression rewriting (rethrown… | exception | error | moq, protected-members, expression-rewriting, argumentexception |
| It is impossible to call the provided strongly-typed… | exception | error | moq, argument-matcher, linq-expressions, generics, csharp |
| Method . is public. Use strong-typed Expect overload… | exception | error | moq, protected-members, misuse, strong-typing |
| Expression is not a setter | exception | error | moq, expression-tree, setter |
| LINQ method ' ' not supported. | exception | error | moq, linq, query-syntax, unsupported-method, csharp |
| No protected method . found whose signature is compatible… | exception | error | moq, reflection, protected-members, signature-mismatch |
| Ref expression must evaluate to a constant value. | exception | error | moq, ref-parameter, expression-evaluation, unsupported-expression |
| Resources.InvalidCallbackParameterCountMismatch (formatted… | exception | error | moq, callback, argument-count, unit-testing |
| The return type of the last member shown above is not… | exception | error | moq, not-supported, mockability, sealed-type |
| NotSupportedException (no message: duck member is neither a… | exception | error | moq, unsupported-operation, expression-trees, fields |
| Resources.InvalidMockGetType (formatted with typeof(T).Name… | exception | error | moq, mock, generic-type, unit-testing |
| Resources.InvalidReturnsCallbackNotADelegateWithReturnType | exception | error | moq, callback, return-type, unit-testing |
| The equals ("==" or "=" in VB) and the conditional 'and'… | exception | error | moq, linq, query-syntax, unsupported-operator, csharp |
| To specify a setup for public property | exception | error | moq, protected-members, properties, misuse |
| Resources.UnsupportedExpression + expr.ToStringFixed() + "… | exception | error | moq, unsupported-expression, recursive-mock, sealed-type |
| Expression is not a property access | exception | error | moq, linq-expressions, argument-exception, property-setup |
| Unhandled binding type | exception | error | expression-tree, moq, unsupported-syntax |
| Resources.ObjectInstanceNotMock | exception | error | moq, mock, not-a-mock, unit-testing |
| Value cannot be an empty string. | exception | error | moq, argument-validation, empty-string |
| value (Argument is out of range) | exception | error | moq, argumentoutofrange, enum, mockfactory |
| Resources.InvalidCallbackReturnTypeMismatch (formatted with… | exception | error | moq, callback, return-type, unit-testing |
| Resources.SetupNotEventAdd (formatted with part.Expression) | exception | error | moq, event, raise, setup |
| Out expression must evaluate to a constant value. | exception | error | moq, out-parameter, expression, not-supported |
| Member is not supported for protected mocking. | exception | error | moq, mocking, not-supported, expression |
| Resources.UnsupportedExpression (formatted with… | exception | error | moq, expression-tree, unsupported-expression, setup |
| Value cannot be null. (Parameter 'value') | validation | error | moq, null-argument, static-configuration, expression-compiler |
| Delays have to be greater than zero to ensure an async… | exception | error | moq, argument-out-of-range, timespan, async |
| ArgumentOutOfRangeException: callCountFrom (invalid range… | validation | error | argument-out-of-range, moq, verification |
| Resources.UnsupportedExpression (formatted with expression) | exception | error | moq, unsupported-expression, raise, event |
| Type does not have a default (public parameterless)… | exception | error | moq, constructor, default-constructor |
| Value cannot be null. (Parameter 'newExpression') | validation | error | moq, null-argument, expression-visitor, constructor |
| Cannot set up . because it is not accessible to the proxy… | exception | error | moq, internalsvisibleto, proxy |
| ex.Message (re-thrown ArgumentException with paramName… | exception | error | moq, reflection, expression-rewriting, protected-members |
| Type does not implement required interface | exception | error | moq, interface, type-check |
| No constructor call could be found. | exception | error | moq, not-supported, expression-visitor, constructor |
| "public bool ( ) in class . | exception | error | moq, matcher-attribute, missing-method, reflection |
| Resources.SetupNotEventRemove (formatted with… | exception | error | moq, event, raise, remove-accessor |
| The new syntax allows you to pass the value in the… | exception | error | moq, obsolete, setupset, deprecated-api |
| Expression is not an event add | exception | error | moq, events, expression-tree |
| Expression involves a field access, which is not supported… | exception | error | moq, linq-expressions, field-access, unsupported-operation |
| Resources.ArgumentMatcherWillNeverMatch (formatted with… | exception | error | moq, argument-matcher, type-mismatch, setup |
| ArgumentNullException: Value cannot be null. (Parameter… | validation | error | csharp, null-argument, reflection, moq, attribute-construction |
| InvalidOperationException (unhandled Times kind in… | exception | error | invalid-enum-value, moq, internal-invariant |
| Expression is not an event remove | exception | error | moq, events, expression-tree |
| ExpectSet has been renamed to SetupSet, and the new syntax… | exception | error | moq, obsolete, expectset, deprecated-api |
| ArgumentNullException: Value cannot be null. (Parameter… | validation | error | moq, null-argument, async, randomness |
| Resources.TypeMatchersMayNotBeUsedWithCallbacks | exception | error | moq, type-matcher, callback, invalid-usage |
| ArgumentOutOfRangeException: callCountTo (invalid range… | validation | error | argument-out-of-range, moq, verification |
| Use the new syntax, which allows you to pass the value in… | exception | error | moq, obsolete, verifyset, deprecated-api |
| Resources.ConstructorArgsForInterface | exception | error | moq, constructor-arguments, interface, invalid-argument |
| ArgumentOutOfRangeException: callCountFrom (invalid range… | validation | error | argument-out-of-range, moq, verification |
| Can't set return value for void method | exception | error | moq, mocking, void-method, argument-exception |
| Property . does not have a setter. | exception | error | moq, property, setter, setup |
| Use ItExpr.IsNull rather than a null argument value, as it… | exception | error | moq, mocking, null-argument, argument-exception |
| Resources.CallBaseCannotBeUsedWithDelegateMocks | exception | error | moq, callbase, delegate, unsupported-operation |
| Resources.InvalidCallbackNotADelegateWithReturnTypeVoid | exception | error | moq, callback, return-type, action-func |
| Resources.InvalidCallbackParameterMismatch (formatted with… | exception | error | moq, callback, parameter-mismatch, type-mismatch |
| value (Argument is null) | exception | error | moq, argumentnull, mockfactory, defaultvalueprovider |
| Minimum delay has to be lower than maximum delay. | exception | error | moq, argument-range, timespan, randomness |
| Resources.AsMustBeInterface | exception | error | moq, as-interface, invalid-argument, type-mismatch |
| InvalidOperationException (unhandled Times kind in ToString) | exception | error | invalid-enum-value, moq, internal-invariant |
| condition (Argument is null) | exception | error | moq, null-argument, when, condition |
| Resources.ConstructorArgsForDelegate | exception | error | moq, constructor-arguments, delegate, invalid-argument |
| Property . does not have a getter. | exception | error | moq, property, getter, setup |
| ArgumentOutOfRangeException: callCount | validation | error | argument-out-of-range, moq, verification |