From 76de096069336d43ea81bbe52ecc6b34a62d8e37 Mon Sep 17 00:00:00 2001
From: hadashiA <dev@hadashikick.jp>
Date: Thu, 15 Feb 2024 14:17:38 +0900
Subject: [PATCH] Add test

---
 .../ToNotifyCollectionChangedTest.cs          | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 tests/ObservableCollections.Tests/ToNotifyCollectionChangedTest.cs

diff --git a/tests/ObservableCollections.Tests/ToNotifyCollectionChangedTest.cs b/tests/ObservableCollections.Tests/ToNotifyCollectionChangedTest.cs
new file mode 100644
index 0000000..746edb6
--- /dev/null
+++ b/tests/ObservableCollections.Tests/ToNotifyCollectionChangedTest.cs
@@ -0,0 +1,57 @@
+namespace ObservableCollections.Tests;
+
+public class ToNotifyCollectionChangedTest
+{
+    [Fact]
+    public void ToNotifyCollectionChanged()
+    {
+        var list = new ObservableList<int>();
+
+        list.Add(10);
+        list.Add(50);
+        list.Add(30);
+
+        var notify = list.CreateView(x => $"${x}").ToNotifyCollectionChanged();
+
+        list.Add(20);
+        list.Add(40);
+
+        using var e = notify.GetEnumerator();
+        e.MoveNext().Should().BeTrue();
+        e.Current.Should().Be("$10");
+        e.MoveNext().Should().BeTrue();
+        e.Current.Should().Be("$20");
+        e.MoveNext().Should().BeTrue();
+        e.Current.Should().Be("$30");
+        e.MoveNext().Should().BeTrue();
+        e.Current.Should().Be("$40");
+        e.MoveNext().Should().BeTrue();
+        e.Current.Should().Be("$50");
+        e.MoveNext().Should().BeFalse();
+    }
+
+    [Fact]
+    public void ToNotifyCollectionChanged_Filter()
+    {
+        var list = new ObservableList<int>();
+
+        list.Add(1);
+        list.Add(2);
+        list.Add(5);
+        list.Add(3);
+
+        var view = list.CreateView(x => $"${x}");
+        var notify = view.ToNotifyCollectionChanged();
+
+        view.AttachFilter((value, view) => value % 2 == 0);
+
+        list.Add(4);
+
+        using var e = notify.GetEnumerator();
+        e.MoveNext().Should().BeTrue();
+        e.Current.Should().Be("$2");
+        e.MoveNext().Should().BeTrue();
+        e.Current.Should().Be("$4");
+        e.MoveNext().Should().BeFalse();
+    }
+}
\ No newline at end of file