verybadcat
diff --git a/‎.github/workflows/Test all projects.yml
+1-1 b/‎.github/workflows/Test all projects.yml
+1-1
diff --git a/‎CSharpMath.CoreTests/BiDictionaryTests.cs
-73 b/‎CSharpMath.CoreTests/BiDictionaryTests.cs
-73
diff --git a/‎CSharpMath.CoreTests/DictionaryTests.cs
+37 b/‎CSharpMath.CoreTests/DictionaryTests.cs
+37
@@ -14,7 +14,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '3.1.201'
+        dotnet-version: '3.1.301'
     - name: Setup JDK # Needed to run ANTLR for AngouriMath
       uses: actions/setup-java@v1
       with:
 
@@ -0,0 +1,37 @@
+using Xunit;
+using CSharpMath.Structures;
+
+namespace CSharpMath.CoreTests {
+  public class DictionaryTests {
+    private AliasBiDictionary<string, int> InitTestDict() {
+      return new AliasBiDictionary<string, int>{
+        { "0", 0 },
+        { "zero", 0 },
+        { "1", 1 }
+      };
+    }
+    [Theory]
+    [InlineData("0", 2, 2, true)]
+    [InlineData("zero", 2, 2, true)]
+    [InlineData("1", 2, 1, true)]
+    [InlineData("2", 3, 2, false)]
+    public void TestRemoveByFirst(string remove, int expectedFTS, int expectedSTF, bool expectedRemoved) {
+      var bd = InitTestDict();
+      var removed = bd.RemoveByFirst(remove);
+      Assert.Equal(expectedFTS, bd.FirstToSecond.Count);
+      Assert.Equal(expectedSTF, bd.SecondToFirst.Count);
+      Assert.Equal(expectedRemoved, removed);
+    }
+    [Theory]
+    [InlineData(0, 1, 1, true)]
+    [InlineData(1, 2, 1, true)]
+    [InlineData(2, 3, 2, false)]
+    public void TestRemoveBySecond(int remove, int expectedFTS, int expectedSTF, bool expectedRemoved) {
+      var bd = InitTestDict();
+      var removed = bd.RemoveBySecond(remove);
+      Assert.Equal(expectedFTS, bd.FirstToSecond.Count);
+      Assert.Equal(expectedSTF, bd.SecondToFirst.Count);
+      Assert.Equal(expectedRemoved, removed);
+    }
+  }
+}