diff --git a/src/CuteUtils.Tests/GlobalSuppressions.cs b/src/CuteUtils.Tests/GlobalSuppressions.cs
new file mode 100644
index 0000000..26faa04
--- /dev/null
+++ b/src/CuteUtils.Tests/GlobalSuppressions.cs
@@ -0,0 +1,8 @@
+// This file is used by Code Analysis to maintain SuppressMessage
+// attributes that are applied to this project.
+// Project-level suppressions either have no target or are given
+// a specific target and scoped to a namespace, type, member, etc.
+
+using System.Diagnostics.CodeAnalysis;
+
+[assembly: SuppressMessage("Blocker Code Smell", "S2699:Tests should include assertions", Justification = "<Pending>")]
\ No newline at end of file
diff --git a/src/CuteUtils.Tests/Misc/TryTests.cs b/src/CuteUtils.Tests/Misc/TryTests.cs
new file mode 100644
index 0000000..5446bee
--- /dev/null
+++ b/src/CuteUtils.Tests/Misc/TryTests.cs
@@ -0,0 +1,352 @@
+using CuteUtils.Misc;
+
+namespace CuteUtils.Tests.Misc;
+
+[TestClass]
+public class TryTests
+{
+    [TestMethod]
+    public async Task RetryAsyncT_SucceedsFirstTry()
+    {
+        int callCount = 0;
+        int result = await Try.RetryAsync(async () =>
+        {
+            callCount++;
+            await Task.Delay(10);
+            return 42;
+        });
+        Assert.AreEqual(1, callCount);
+        Assert.AreEqual(42, result);
+    }
+
+    [TestMethod]
+    public async Task RetryAsyncT_RetriesAndSucceeds()
+    {
+        int callCount = 0;
+        int result = await Try.RetryAsync(async () =>
+        {
+            callCount++;
+            if (callCount < 3)
+            {
+                throw new InvalidOperationException();
+            }
+
+            await Task.Delay(10);
+            return 99;
+        }, maxRetries: 5, delay: TimeSpan.FromMilliseconds(1));
+        Assert.AreEqual(3, callCount);
+        Assert.AreEqual(99, result);
+    }
+
+    [TestMethod]
+    public async Task RetryAsyncT_ThrowsAfterMaxRetries()
+    {
+        int callCount = 0;
+        _ = await Assert.ThrowsExactlyAsync<InvalidOperationException>(async () =>
+        {
+            _ = await Try.RetryAsync<int>(() =>
+            {
+                callCount++;
+                throw new InvalidOperationException("fail");
+            }, maxRetries: 2, delay: TimeSpan.FromMilliseconds(1));
+        });
+        Assert.AreEqual(2, callCount);
+    }
+
+    [TestMethod]
+    public async Task RetryAsync_SucceedsFirstTry()
+    {
+        int callCount = 0;
+        await Try.RetryAsync(async () =>
+        {
+            callCount++;
+            await Task.Delay(10);
+        });
+        Assert.AreEqual(1, callCount);
+    }
+
+    [TestMethod]
+    public async Task RetryAsync_RetriesAndSucceeds()
+    {
+        int callCount = 0;
+        await Try.RetryAsync(async () =>
+        {
+            callCount++;
+            if (callCount < 2)
+            {
+                throw new Exception();
+            }
+
+            await Task.Delay(10);
+        }, maxRetries: 3, delay: TimeSpan.FromMilliseconds(1));
+        Assert.AreEqual(2, callCount);
+    }
+
+    [TestMethod]
+    public async Task RetryAsync_ThrowsAfterMaxRetries()
+    {
+        int callCount = 0;
+        _ = await Assert.ThrowsExactlyAsync<InvalidOperationException>(async () =>
+        {
+            await Try.RetryAsync(() =>
+            {
+                callCount++;
+                throw new Exception();
+            }, maxRetries: 2, delay: TimeSpan.FromMilliseconds(1));
+        });
+        Assert.AreEqual(2, callCount);
+    }
+
+    [TestMethod]
+    public void RetryT_SucceedsFirstTry()
+    {
+        int callCount = 0;
+        int result = Try.Retry(() =>
+        {
+            callCount++;
+            return 7;
+        });
+        Assert.AreEqual(1, callCount);
+        Assert.AreEqual(7, result);
+    }
+
+    [TestMethod]
+    public void RetryT_RetriesAndSucceeds()
+    {
+        int callCount = 0;
+        int result = Try.Retry(() =>
+        {
+            callCount++;
+            if (callCount < 4)
+            {
+                throw new Exception();
+            }
+
+            return 123;
+        }, maxRetries: 5, delay: TimeSpan.FromMilliseconds(1));
+        Assert.AreEqual(4, callCount);
+        Assert.AreEqual(123, result);
+    }
+
+    [TestMethod]
+    public void RetryT_ThrowsAfterMaxRetries()
+    {
+        int callCount = 0;
+        _ = Assert.ThrowsExactly<InvalidOperationException>(() =>
+        {
+            _ = Try.Retry<int>(() =>
+            {
+                callCount++;
+                throw new Exception();
+            }, maxRetries: 3, delay: TimeSpan.FromMilliseconds(1));
+        });
+        Assert.AreEqual(3, callCount);
+    }
+
+    [TestMethod]
+    public void Retry_SucceedsFirstTry()
+    {
+        int callCount = 0;
+        Try.Retry(() =>
+        {
+            callCount++;
+        });
+        Assert.AreEqual(1, callCount);
+    }
+
+    [TestMethod]
+    public void Retry_RetriesAndSucceeds()
+    {
+        int callCount = 0;
+        Try.Retry(() =>
+        {
+            callCount++;
+            if (callCount < 2)
+            {
+                throw new Exception();
+            }
+        }, maxRetries: 3, delay: TimeSpan.FromMilliseconds(1));
+        Assert.AreEqual(2, callCount);
+    }
+
+    [TestMethod]
+    public void Retry_ThrowsAfterMaxRetries()
+    {
+        int callCount = 0;
+        _ = Assert.ThrowsExactly<InvalidOperationException>(() =>
+        {
+            Try.Retry(() =>
+            {
+                callCount++;
+                throw new Exception();
+            }, maxRetries: 2, delay: TimeSpan.FromMilliseconds(1));
+        });
+        Assert.AreEqual(2, callCount);
+    }
+
+    [TestMethod]
+    public async Task RetryAsyncT_ThrowsArgumentNullException()
+    {
+        _ = await Assert.ThrowsExactlyAsync<ArgumentNullException>(async () =>
+        {
+            _ = await Try.RetryAsync<int>(null!);
+        });
+    }
+
+    [TestMethod]
+    public async Task RetryAsync_ThrowsArgumentNullException()
+    {
+        _ = await Assert.ThrowsExactlyAsync<ArgumentNullException>(async () =>
+        {
+            await Try.RetryAsync(null!);
+        });
+    }
+
+    [TestMethod]
+    public void RetryT_ThrowsArgumentNullException()
+    {
+        _ = Assert.ThrowsExactly<ArgumentNullException>(() =>
+        {
+            _ = Try.Retry<int>(null!);
+        });
+    }
+
+    [TestMethod]
+    public void Retry_ThrowsArgumentNullException()
+    {
+        _ = Assert.ThrowsExactly<ArgumentNullException>(() =>
+        {
+            Try.Retry(null!);
+        });
+    }
+
+    [TestClass]
+    public class TryCatchTests
+    {
+        [TestMethod]
+        public void Catch_Action_NoException()
+        {
+            bool executed = false;
+
+            _ = Try.Catch(() => executed = true);
+
+            Assert.IsTrue(executed);
+        }
+
+        [TestMethod]
+        public void Catch_Action_ExceptionHandled()
+        {
+            Try.Catch(() => throw new InvalidOperationException());
+        }
+
+        [TestMethod]
+        public void Catch_Action_OutParam_ExceptionHandled()
+        {
+            Try.Catch(() => throw new InvalidOperationException(), out Exception? exception);
+
+            Assert.IsNotNull(exception);
+            Assert.IsInstanceOfType(exception, typeof(InvalidOperationException));
+        }
+
+        [TestMethod]
+        public void Catch_TFunc_NoException()
+        {
+            int result = Try.Catch(() => 42)!;
+
+            Assert.AreEqual(42, result);
+        }
+
+        [TestMethod]
+        public void Catch_TFunc_ExceptionHandled_ReturnsDefault()
+        {
+            int? result = Try.Catch<int>(() => throw new InvalidOperationException());
+
+            Assert.AreEqual(default(int), result);
+        }
+
+        [TestMethod]
+        public void Catch_TFunc_OutParam_ExceptionHandled()
+        {
+            int? result = Try.Catch<int?>(() => throw new InvalidOperationException(), out Exception? exception);
+
+            Assert.IsNull(result);
+            Assert.IsNotNull(exception);
+        }
+
+        [TestMethod]
+        public async Task CatchAsync_Delegate_NoException()
+        {
+            bool executed = false;
+
+            await Try.CatchAsync(async () =>
+            {
+                executed = true;
+                await Task.Delay(10);
+            });
+
+            Assert.IsTrue(executed);
+        }
+
+        [TestMethod]
+        public async Task CatchAsync_Delegate_ExceptionHandled()
+        {
+            await Try.CatchAsync(async () =>
+            {
+                await Task.Delay(10);
+                throw new InvalidOperationException();
+            });
+        }
+
+        [TestMethod]
+        public async Task CatchAsync_TFunc_NoException()
+        {
+            int result = await Try.CatchAsync(async () =>
+            {
+                await Task.Delay(10);
+                return 99;
+            });
+
+            Assert.AreEqual(99, result);
+        }
+
+        [TestMethod]
+        public async Task CatchAsync_TFunc_ExceptionHandled_ReturnsDefault()
+        {
+            int result = await Try.CatchAsync<int>(async () =>
+            {
+                await Task.Delay(10);
+                throw new InvalidOperationException();
+            });
+
+            Assert.AreEqual(default, result);
+        }
+
+        [TestMethod]
+        public async Task CatchAsync_Task_NoException()
+        {
+            await Try.CatchAsync(Task.Delay(10));
+        }
+
+        [TestMethod]
+        public async Task CatchAsync_Task_ExceptionHandled()
+        {
+            await Try.CatchAsync(Task.Run(() => throw new InvalidOperationException()));
+        }
+
+        [TestMethod]
+        public async Task CatchAsync_TaskT_NoException()
+        {
+            string? result = await Try.CatchAsync(Task.FromResult("Hello"));
+
+            Assert.AreEqual("Hello", result);
+        }
+
+        [TestMethod]
+        public async Task CatchAsync_TaskT_ExceptionHandled_ReturnsDefault()
+        {
+            string? result = await Try.CatchAsync<string>(Task.Run<string>(() => ""[0].ToString()));
+
+            Assert.IsNull(result);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/CuteUtils.Tests/Misc/WaitTests.cs b/src/CuteUtils.Tests/Misc/WaitTests.cs
index efd14fe..634a7ee 100644
--- a/src/CuteUtils.Tests/Misc/WaitTests.cs
+++ b/src/CuteUtils.Tests/Misc/WaitTests.cs
@@ -9,9 +9,9 @@ public class WaitTests
     public async Task UntilAsync_ConditionMet_CompletesSuccessfully()
     {
         bool flag = false;
-        _ = Task.Run(() =>
+        _ = Task.Run(async () =>
         {
-            Thread.Sleep(200);
+            await Task.Delay(200);
             flag = true;
         });
         await Wait.UntilAsync(() => flag, TimeSpan.FromMilliseconds(50), TimeSpan.FromSeconds(2));
@@ -19,19 +19,21 @@ public class WaitTests
     }
 
     [TestMethod]
-    [ExpectedException(typeof(TimeoutException))]
     public async Task UntilAsync_ConditionNotMet_ThrowsTimeoutException()
     {
-        await Wait.UntilAsync(() => false, TimeSpan.FromMilliseconds(50), TimeSpan.FromMilliseconds(200));
+        _ = await Assert.ThrowsExactlyAsync<TimeoutException>(async () =>
+        {
+            await Wait.UntilAsync(() => false, TimeSpan.FromMilliseconds(50), TimeSpan.FromMilliseconds(200));
+        });
     }
 
     [TestMethod]
     public void Until_ConditionMet_CompletesSuccessfully()
     {
         bool flag = false;
-        _ = Task.Run(() =>
+        _ = Task.Run(async () =>
         {
-            Thread.Sleep(200);
+            await Task.Delay(200);
             flag = true;
         });
         Wait.Until(() => flag, TimeSpan.FromMilliseconds(50), TimeSpan.FromSeconds(2));
@@ -39,10 +41,12 @@ public class WaitTests
     }
 
     [TestMethod]
-    [ExpectedException(typeof(TimeoutException))]
     public void Until_ConditionNotMet_ThrowsTimeoutException()
     {
-        Wait.Until(() => false, TimeSpan.FromMilliseconds(50), TimeSpan.FromMilliseconds(200));
+        _ = Assert.ThrowsExactly<TimeoutException>(() =>
+        {
+            Wait.Until(() => false, TimeSpan.FromMilliseconds(50), TimeSpan.FromMilliseconds(200));
+        });
     }
 
     [TestMethod]
@@ -50,9 +54,9 @@ public class WaitTests
     {
         void subscribe(Action handler)
         {
-            _ = Task.Run(() =>
+            _ = Task.Run(async () =>
             {
-                Thread.Sleep(200);
+                await Task.Delay(200);
                 handler();
             });
         }
@@ -60,11 +64,16 @@ public class WaitTests
     }
 
     [TestMethod]
-    [ExpectedException(typeof(TimeoutException))]
     public async Task WaitForEventAsync_EventNotRaised_ThrowsTimeoutException()
     {
-        void subscribe(Action handler) { }
-        await Wait.WaitForEventAsync(subscribe, TimeSpan.FromMilliseconds(200));
+        void subscribe(Action handler)
+        {
+            // Intentionally left empty for negative test case (event never raised)
+        }
+        _ = await Assert.ThrowsExactlyAsync<TimeoutException>(async () =>
+        {
+            await Wait.WaitForEventAsync(subscribe, TimeSpan.FromMilliseconds(200));
+        });
     }
 
     [TestMethod]
@@ -72,9 +81,9 @@ public class WaitTests
     {
         void subscribe(Action<int> handler)
         {
-            _ = Task.Run(() =>
+            _ = Task.Run(async () =>
             {
-                Thread.Sleep(200);
+                await Task.Delay(200);
                 handler(42);
             });
         }
@@ -83,11 +92,16 @@ public class WaitTests
     }
 
     [TestMethod]
-    [ExpectedException(typeof(TimeoutException))]
     public async Task WaitForEventAsyncT_EventNotRaised_ThrowsTimeoutException()
     {
-        void subscribe(Action<int> handler) { }
-        _ = await Wait.WaitForEventAsync((Action<Action<int>>)subscribe, TimeSpan.FromMilliseconds(200));
+        void subscribe(Action<int> handler)
+        {
+            // Intentionally left empty for negative test case (event never raised)
+        }
+        _ = await Assert.ThrowsExactlyAsync<TimeoutException>(async () =>
+        {
+            _ = await Wait.WaitForEventAsync((Action<Action<int>>)subscribe, TimeSpan.FromMilliseconds(200));
+        });
     }
 
     [TestMethod]
@@ -95,9 +109,9 @@ public class WaitTests
     {
         void subscribe(Action handler)
         {
-            _ = Task.Run(() =>
+            _ = Task.Run(async () =>
             {
-                Thread.Sleep(200);
+                await Task.Delay(200);
                 handler();
             });
         }
@@ -105,11 +119,16 @@ public class WaitTests
     }
 
     [TestMethod]
-    [ExpectedException(typeof(TimeoutException))]
     public void WaitForEvent_EventNotRaised_ThrowsTimeoutException()
     {
-        void subscribe(Action handler) { }
-        Wait.WaitForEvent(subscribe, TimeSpan.FromMilliseconds(200));
+        void subscribe(Action handler)
+        {
+            // Intentionally left empty for negative test case (event never raised)
+        }
+        _ = Assert.ThrowsExactly<TimeoutException>(() =>
+        {
+            Wait.WaitForEvent(subscribe, TimeSpan.FromMilliseconds(200));
+        });
     }
 
     [TestMethod]
@@ -117,9 +136,9 @@ public class WaitTests
     {
         void subscribe(Action<string> handler)
         {
-            _ = Task.Run(() =>
+            _ = Task.Run(async () =>
             {
-                Thread.Sleep(200);
+                await Task.Delay(200);
                 handler("hello");
             });
         }
@@ -128,10 +147,15 @@ public class WaitTests
     }
 
     [TestMethod]
-    [ExpectedException(typeof(TimeoutException))]
     public void WaitForEventT_EventNotRaised_ThrowsTimeoutException()
     {
-        void subscribe(Action<string> handler) { }
-        _ = Wait.WaitForEvent((Action<Action<string>>)subscribe, TimeSpan.FromMilliseconds(200));
+        void subscribe(Action<string> handler)
+        {
+            // Intentionally left empty for negative test case (event never raised)
+        }
+        _ = Assert.ThrowsExactly<TimeoutException>(() =>
+        {
+            _ = Wait.WaitForEvent((Action<Action<string>>)subscribe, TimeSpan.FromMilliseconds(200));
+        });
     }
 }
\ No newline at end of file