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erri120
3f16e316b0
Using optimized `WhereSelect`, the `WhereNotNull` operator is very common and many libraries and applications had to DIY implement this for `System.IObservable<T>`.
25 lines
493 B
C#
25 lines
493 B
C#
namespace R3.Tests.OperatorTests;
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public class WhereNotNullTest(ITestOutputHelper output)
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{
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[Fact]
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public void WhereNotNull()
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{
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var p = new Subject<string?>();
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using var list = p.WhereNotNull().ToLiveList();
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p.OnNext(null);
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list.AssertEqual([]);
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p.OnNext("foo");
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list.AssertEqual(["foo"]);
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p.OnNext(null);
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list.AssertEqual(["foo"]);
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p.OnNext("bar");
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list.AssertEqual(["foo", "bar"]);
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}
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}
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