diff --git a/src/yunit/TestAdapter.cs b/src/yunit/TestAdapter.cs
index bc76875..7c1c7ef 100644
--- a/src/yunit/TestAdapter.cs
+++ b/src/yunit/TestAdapter.cs
@@ -118,13 +118,14 @@ void ExpandTest(TestData data)
         public void RunTests(IEnumerable<TestCase> tests, IRunContext runContext, IFrameworkHandle frameworkHandle)
         {
             var testRuns = new ConcurrentBag<Task>();
-            Parallel.ForEach(tests, test => testRuns.Add(RunTest(frameworkHandle, test)));
+            var inOnlyMode = tests.Any(test => test.DisplayName.IndexOf("[only]", 0, StringComparison.OrdinalIgnoreCase) >= 0);
+            Parallel.ForEach(tests, test => testRuns.Add(RunTest(frameworkHandle, test, inOnlyMode)));
             Task.WhenAll(testRuns).GetAwaiter().GetResult();
         }
 
         public void RunTests(IEnumerable<string> sources, IRunContext runContext, IFrameworkHandle frameworkHandle)
         {
-            var testRuns = new ConcurrentBag<Task>();
+            var tests = new ConcurrentBag<TestCase>();
 
             var filterExpression = runContext.GetTestCaseFilter(s_filteringProperties, null);
 
@@ -134,15 +135,15 @@ public void RunTests(IEnumerable<string> sources, IRunContext runContext, IFrame
                 {
                     if (filterExpression == null || filterExpression.MatchTestCase(test, name => GetPropertyValue(test, name)))
                     {
-                        testRuns.Add(RunTest(frameworkHandle, test));
+                        tests.Add(test);
                     }
                 },
                 message => frameworkHandle.SendMessage(TestMessageLevel.Warning, message));
 
-            Task.WhenAll(testRuns).GetAwaiter().GetResult();
+            RunTests(tests, runContext, frameworkHandle);
         }
 
-        private async Task RunTest(ITestExecutionRecorder log, TestCase test)
+        private async Task RunTest(ITestExecutionRecorder log, TestCase test, bool inOnlyMode = false)
         {
             if (_canceled)
             {
@@ -162,7 +163,7 @@ private async Task RunTest(ITestExecutionRecorder log, TestCase test)
                 result.StartTime = DateTime.UtcNow;
 
                 var timeout = test.GetPropertyValue<int>(s_timeoutProperty, 1000);
-                var runTest = RunTest(test);
+                var runTest = RunTest(test, inOnlyMode);
 
                 if (await Task.WhenAny(runTest, Task.Delay(timeout)) == runTest)
                 {
@@ -268,13 +269,18 @@ private static void DiscoverTests(ITestAttribute attribute, string sourcePath, A
             Parallel.ForEach(files, file => attribute.DiscoverTests(Path.Combine(sourcePath, file), report));
         }
 
-        private Task RunTest(TestCase test)
+        private Task RunTest(TestCase test, bool inOnlyMode = false)
         {
             if (test.DisplayName.IndexOf("[skip]", 0, StringComparison.OrdinalIgnoreCase) >= 0)
             {
                 throw new TestSkippedException("Marked as [skip]");
             }
 
+            if (inOnlyMode && test.DisplayName.IndexOf("[only]", 0, StringComparison.OrdinalIgnoreCase) < 0)
+            {
+                throw new TestSkippedException("Some other tests has been marked as [only]");
+            }
+
             var (type, method) = GetMethodInfo(test.Source, test.FullyQualifiedName);
             if (type is null || method is null)
             {
diff --git a/test/yunit.nuget.test/NuGetTest.cs b/test/yunit.nuget.test/NuGetTest.cs
index 064a9e9..b0697e3 100644
--- a/test/yunit.nuget.test/NuGetTest.cs
+++ b/test/yunit.nuget.test/NuGetTest.cs
@@ -1,31 +1,36 @@
-using System;
-using System.IO;
+using System.IO;
 using System.Threading.Tasks;
 
 namespace Yunit.NuGetTest
 {
     public class NuGetTest
     {
-        [MarkdownTest("~/test/yunit.nuget.test/**/*.md")]
+        [MarkdownTest("~/test/yunit.nuget.test/yunit.nuget.test.md")]
         public void Foo(string filename)
         {
             File.WriteAllText(filename, "");
         }
 
-        [MarkdownTest("~/test/yunit.nuget.test/**/*.md")]
+        [MarkdownTest("~/test/yunit.nuget.test/yunit-only.nuget.test.md")]
+        public void FooWithOnly(string filename)
+        {
+            File.WriteAllText(filename, "");
+        }
+
+        [MarkdownTest("~/test/yunit.nuget.test/yunit.nuget.test.md")]
         public void SkipSync(string filename)
         {
             throw new TestSkippedException();
         }
 
-        [MarkdownTest("~/test/yunit.nuget.test/**/*.md")]
+        [MarkdownTest("~/test/yunit.nuget.test/yunit.nuget.test.md")]
         public async Task SkipAsync(TestData data, string filename)
         {
             await Task.Delay(1);
             throw new TestSkippedException();
         }
 
-        [MarkdownTest("~/test/yunit.nuget.test/**/*.md", ExpandTest = "ExpandTest")]
+        [MarkdownTest("~/test/yunit.nuget.test/yunit.nuget.test.md", ExpandTest = "ExpandTest")]
         public void ExpandTestMethod(TestData data, string filename)
         {
             throw new TestSkippedException(data.Matrix);
diff --git a/test/yunit.nuget.test/yunit-only.nuget.test.md b/test/yunit.nuget.test/yunit-only.nuget.test.md
new file mode 100644
index 0000000..2e87ebf
--- /dev/null
+++ b/test/yunit.nuget.test/yunit-only.nuget.test.md
@@ -0,0 +1,11 @@
+# [only] yunit.NuGetTest with only mode
+
+``````yml
+foo
+``````
+
+# This test should be skipped
+
+``````yml
+foo
+``````
\ No newline at end of file