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NoItem Constraint

docs/articles/nunit/writing-tests/constraints/NoItemConstraint.md

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NoItem Constraint

NoItemConstraint applies a constraint to each item in a collection, succeeding only if all of them fail. An exception is thrown if the actual value passed does not implement IEnumerable.

Constructor

csharp
NoItemConstraint(Constraint itemConstraint)

Syntax

csharp
Has.None...

Examples of Use

csharp
int[] iarray = new int[] { 1, 2, 3 };
string[] sarray = new string[] { "a", "b", "c" };
Assert.That(iarray, Has.None.Null);
Assert.That(sarray, Has.None.EqualTo("d"));
Assert.That(iarray, Has.None.LessThan(0));