diff --git a/framework/test/Volo.Abp.Core.Tests/Volo/Abp/Check_Tests.cs b/framework/test/Volo.Abp.Core.Tests/Volo/Abp/Check_Tests.cs
new file mode 100644
index 0000000000..58467fabb5
--- /dev/null
+++ b/framework/test/Volo.Abp.Core.Tests/Volo/Abp/Check_Tests.cs
@@ -0,0 +1,119 @@
+using System;
+using System.Collections.Generic;
+using Shouldly;
+using Xunit;
+
+namespace Volo.Abp;
+
+public class Check_Tests
+{
+    [Fact]
+    public void NotNull_Test()
+    {
+        Check.NotNull("test", nameof(NotNull_Test)).ShouldBe("test");
+        Check.NotNull(string.Empty, nameof(NotNull_Test)).ShouldBe(string.Empty);
+        Check.NotNull("test", nameof(NotNull_Test), maxLength: 4, minLength: 0).ShouldBe("test");
+
+        Assert.Throws<ArgumentNullException>(() => Check.NotNull<object>(null, nameof(NotNull_Test)));
+        Assert.Throws<ArgumentException>(() => Check.NotNull(null, nameof(NotNull_Test)));
+        Assert.Throws<ArgumentException>(() => Check.NotNull("test", nameof(NotNull_Test), maxLength: 3));
+        Assert.Throws<ArgumentException>(() => Check.NotNull("test", nameof(NotNull_Test), minLength: 5));
+    }
+
+    [Fact]
+    public void NotNullOrWhiteSpace_Test()
+    {
+        Check.NotNullOrWhiteSpace("test", nameof(NotNullOrWhiteSpace_Test)).ShouldBe("test");
+        Check.NotNullOrWhiteSpace("test", nameof(NotNullOrWhiteSpace_Test), maxLength: 4, minLength: 0).ShouldBe("test");
+
+        Assert.Throws<ArgumentException>(() => Check.NotNullOrWhiteSpace(null, nameof(NotNullOrWhiteSpace_Test)));
+        Assert.Throws<ArgumentException>(() => Check.NotNullOrWhiteSpace(string.Empty, nameof(NotNullOrWhiteSpace_Test)));
+        Assert.Throws<ArgumentException>(() => Check.NotNullOrWhiteSpace("test", nameof(NotNullOrWhiteSpace_Test), maxLength: 3));
+        Assert.Throws<ArgumentException>(() => Check.NotNullOrWhiteSpace("test", nameof(NotNullOrWhiteSpace_Test), minLength: 5));
+    }
+
+    [Fact]
+    public void NotNullOrEmpty_Test()
+    {
+        Check.NotNullOrEmpty("test", nameof(NotNullOrEmpty_Test)).ShouldBe("test");
+        Check.NotNullOrEmpty("test", nameof(NotNullOrEmpty_Test), maxLength: 4, minLength: 0).ShouldBe("test");
+        Check.NotNullOrEmpty(new List<string>{"test"}, nameof(NotNullOrEmpty_Test));
+        
+        Assert.Throws<ArgumentException>(() => Check.NotNullOrEmpty(null, nameof(NotNullOrEmpty_Test)));
+        Assert.Throws<ArgumentException>(() => Check.NotNullOrEmpty(string.Empty, nameof(NotNullOrEmpty_Test)));
+        Assert.Throws<ArgumentException>(() => Check.NotNullOrEmpty("test", nameof(NotNullOrEmpty_Test), maxLength: 3));
+        Assert.Throws<ArgumentException>(() => Check.NotNullOrEmpty("test", nameof(NotNullOrEmpty_Test), minLength: 5));
+        Assert.Throws<ArgumentException>(() => Check.NotNullOrEmpty(new List<string>(), nameof(NotNullOrEmpty_Test)));
+    }
+
+    [Fact]
+    public void AssignableTo_Test()
+    {
+        Check.AssignableTo<object>(typeof(string), nameof(AssignableTo_Test)).ShouldBe(typeof(string));
+        Check.AssignableTo<Parent>(typeof(Child), nameof(AssignableTo_Test)).ShouldBe(typeof(Child));
+        Check.AssignableTo<Child>(typeof(Child2), nameof(AssignableTo_Test)).ShouldBe(typeof(Child2));
+        Check.AssignableTo<Parent>(typeof(Child2), nameof(AssignableTo_Test)).ShouldBe(typeof(Child2));
+        
+        Assert.Throws<ArgumentException>(() => Check.AssignableTo<Child>(typeof(Parent), nameof(AssignableTo_Test)));
+        Assert.Throws<ArgumentException>(() => Check.AssignableTo<Child2>(typeof(Child), nameof(AssignableTo_Test)));
+        Assert.Throws<ArgumentException>(() => Check.AssignableTo<Child2>(typeof(Parent), nameof(AssignableTo_Test)));
+    }
+
+    [Fact]
+    public void Length_Test()
+    {
+        Check.Length("test", nameof(Length_Test), maxLength: 4).ShouldBe("test");
+        Check.Length("test", nameof(Length_Test), maxLength: 5).ShouldBe("test");
+        Check.Length("test", nameof(Length_Test), maxLength:4, minLength: 0).ShouldBe("test");
+        Check.Length("test", nameof(Length_Test), maxLength:4, minLength: 4).ShouldBe("test");
+        
+        Assert.Throws<ArgumentException>(() => Check.Length("test", nameof(Length_Test), maxLength: 0));
+        Assert.Throws<ArgumentException>(() => Check.Length("test", nameof(Length_Test), maxLength: 3));
+        Assert.Throws<ArgumentException>(() => Check.Length("test", nameof(Length_Test), maxLength: 4, minLength: 5));
+    }
+
+    [Fact]
+    public void Positive_Test()
+    {
+        Check.Positive(1.To<Int16>(), nameof(Positive_Test)).ShouldBe(1.To<Int16>());
+        Check.Positive(1.To<Int32>(), nameof(Positive_Test)).ShouldBe(1.To<Int32>());
+        Check.Positive(1.To<Int64>(), nameof(Positive_Test)).ShouldBe(1.To<Int64>());
+        
+        Assert.Throws<ArgumentException>(() => Check.Positive(0.To<Int16>(), nameof(Positive_Test)));
+        Assert.Throws<ArgumentException>(() => Check.Positive(0.To<Int32>(), nameof(Positive_Test)));
+        Assert.Throws<ArgumentException>(() => Check.Positive(0.To<Int64>(), nameof(Positive_Test)));
+        Assert.Throws<ArgumentException>(() => Check.Positive(-1.To<Int16>(), nameof(Positive_Test)));
+        Assert.Throws<ArgumentException>(() => Check.Positive(-1.To<Int32>(), nameof(Positive_Test)));
+        Assert.Throws<ArgumentException>(() => Check.Positive(-1.To<Int64>(), nameof(Positive_Test)));
+    }
+
+    [Fact]
+    public void Range_Test()
+    {
+        Check.Range(1.To<Int16>(), nameof(Range_Test), minimumValue: 1.To<Int16>(), maximumValue: 10.To<Int16>()).ShouldBe(1.To<Int16>());
+        Check.Range(1.To<Int32>(), nameof(Range_Test), minimumValue: 1.To<Int32>(), maximumValue: 10.To<Int32>()).ShouldBe(1.To<Int32>());
+        Check.Range(1.To<Int64>(), nameof(Range_Test), minimumValue: 1.To<Int64>(), maximumValue: 10.To<Int64>()).ShouldBe(1.To<Int64>());
+        
+        Assert.Throws<ArgumentException>(() => Check.Range(0.To<Int16>(), nameof(Range_Test), minimumValue: 1.To<Int16>(), maximumValue: 10.To<Int16>()));
+        Assert.Throws<ArgumentException>(() => Check.Range(0.To<Int32>(), nameof(Range_Test), minimumValue: 1.To<Int32>(), maximumValue: 10.To<Int32>()));
+        Assert.Throws<ArgumentException>(() => Check.Range(0.To<Int64>(), nameof(Range_Test), minimumValue: 1.To<Int64>(), maximumValue: 10.To<Int64>()));
+        Assert.Throws<ArgumentException>(() => Check.Range(11.To<Int16>(), nameof(Range_Test), minimumValue: 1.To<Int16>(), maximumValue: 10.To<Int16>()));
+        Assert.Throws<ArgumentException>(() => Check.Range(11.To<Int32>(), nameof(Range_Test), minimumValue: 1.To<Int32>(), maximumValue: 10.To<Int32>()));
+        Assert.Throws<ArgumentException>(() => Check.Range(11.To<Int64>(), nameof(Range_Test), minimumValue: 1.To<Int64>(), maximumValue: 10.To<Int64>()));
+    }
+    
+    class Parent
+    {
+        
+    }
+    
+    class Child: Parent
+    {
+        
+    }
+
+    class Child2: Child
+    {
+        
+    }
+}
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