microsoft · Evangelink · Jul 8, 2026 · Jul 8, 2026 · Jul 8, 2026
diff --git a/docs/Changelog-Platform.md b/docs/Changelog-Platform.md
@@ -49,6 +49,7 @@ See full log [of v4.2.3...v4.3.0](https://github.com/microsoft/testfx/compare/v4
 * Add server-initiated session cancellation to the dotnet test IPC protocol by @Evangelink in [#9549](https://github.com/microsoft/testfx/pull/9549)
 * Emit `::warning` annotations for skipped tests in `Microsoft.Testing.Extensions.GitHubActionsReport` by @Evangelink in [#9641](https://github.com/microsoft/testfx/pull/9641)
 * Let an explicit `--minimum-expected-tests N` govern the zero-tests verdict, so a run of fewer than N tests reports the minimum-expected violation (exit code 9) instead of "zero tests ran" (exit code 8) even when no test ran. This lets a `dotnet test --test-modules` orchestrator tell a stricter local-minimum violation apart from an empty module (#7457) by @Copilot in [#9709](https://github.com/microsoft/testfx/pull/9709)
+* Allow `--minimum-expected-tests 0` so an explicit zero minimum accepts an empty run (same outcome as `--ignore-exit-code 8`), giving a per-module "zero tests is acceptable" opt-in (#7457) by @Copilot in [#9724](https://github.com/microsoft/testfx/pull/9724)
 
 ### Fixed
 

diff --git a/src/Platform/Microsoft.Testing.Platform/CommandLine/PlatformCommandLineProvider.cs b/src/Platform/Microsoft.Testing.Platform/CommandLine/PlatformCommandLineProvider.cs
@@ -202,7 +202,7 @@ public static bool IsListTestsJsonOutput(ICommandLineOptions commandLineOptions)
 
     private static Task<ValidationResult> IsMinimumExpectedTestsOptionValidAsync(CommandLineOption option, string[] arguments)
         => option.Name == MinimumExpectedTestsOptionKey
-            && (arguments.Length != 1 || !int.TryParse(arguments[0], out int value) || value <= 0)
+            && (arguments.Length != 1 || !int.TryParse(arguments[0], out int value) || value < 0)
             ? ValidationResult.InvalidTask(PlatformResources.PlatformCommandLineMinimumExpectedTestsOptionSingleArgument)
             : ValidationResult.ValidTask;
 

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/PlatformResources.resx b/src/Platform/Microsoft.Testing.Platform/Resources/PlatformResources.resx
@@ -497,7 +497,7 @@ Optionally accepts 'text' (the default human-readable output) or 'json' to print
     <comment>{Locked="--list-tests"}{Locked="--minimum-expected-tests"}</comment>
   </data>
   <data name="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument" xml:space="preserve">
-    <value>'--minimum-expected-tests' expects a single non-zero positive integer value
+    <value>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</value>
     <comment>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</comment>
   </data>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.cs.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.cs.xlf
@@ -591,9 +591,9 @@ Volitelně přijímá hodnotu „text“ (výchozí výstup čitelný pro člov
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">--minimum-expected-tests očekává jednu kladnou nenulovou celočíselnou hodnotu
+        <target state="needs-review-translation">--minimum-expected-tests očekává jednu kladnou nenulovou celočíselnou hodnotu
 (např. --minimum-expected-tests 10).</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.de.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.de.xlf
@@ -591,9 +591,9 @@ Akzeptiert optional „text“ (die standardmäsige lesbare Ausgabe) oder „jso
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">"--minimum-expected-tests" erwartet einen einzelnen positiven ganzzahligen Wert ungleich Null
+        <target state="needs-review-translation">"--minimum-expected-tests" erwartet einen einzelnen positiven ganzzahligen Wert ungleich Null
 (Beispiel: "--minimum-expected-tests 10")</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.es.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.es.xlf
@@ -591,9 +591,9 @@ Opcionalmente, acepta "text" (la salida legible por el usuario predeterminada) o
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">'--minimum-expected-tests' espera un único valor entero positivo distinto de cero
+        <target state="needs-review-translation">'--minimum-expected-tests' espera un único valor entero positivo distinto de cero
 (por ejemplo, '--minimum-expected-tests 10')</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.fr.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.fr.xlf
@@ -591,9 +591,9 @@ Accepte éventuellement « text » (sortie lisible par l’humain par défaut)
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">« --minimum-expected-tests » attend une seule valeur entière positive différente de zéro
+        <target state="needs-review-translation">« --minimum-expected-tests » attend une seule valeur entière positive différente de zéro
 (par exemple, « --minimum-expected-tests 10 »)</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.it.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.it.xlf
@@ -591,9 +591,9 @@ Facoltativamente accetta ''text'' (output leggibile predefinito) o ''json'' per
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">'--minimum-expected-tests' prevede un singolo valore intero positivo diverso da zero
+        <target state="needs-review-translation">'--minimum-expected-tests' prevede un singolo valore intero positivo diverso da zero
 (ad esempio '--minimum-expected-tests 10')</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.ja.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.ja.xlf
@@ -592,9 +592,9 @@ Optionally accepts 'text' (the default human-readable output) or 'json' to print
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">'--minimum-expected-tests' には、0 以外の正の整数値が 1 つ必要です
+        <target state="needs-review-translation">'--minimum-expected-tests' には、0 以外の正の整数値が 1 つ必要です
 (例: '--minimum-expected-tests 10')</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.ko.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.ko.xlf
@@ -591,9 +591,9 @@ Optionally accepts 'text' (the default human-readable output) or 'json' to print
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">'--minimum-expected-tests'에는 0이 아닌 단일 양의 정수 값이 필요합니다.
+        <target state="needs-review-translation">'--minimum-expected-tests'에는 0이 아닌 단일 양의 정수 값이 필요합니다.
 (예: '--minimum-expected-tests 10')</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.pl.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.pl.xlf
@@ -591,9 +591,9 @@ Opcjonalnie akceptuje „text” (domyślne dane wyjściowe czytelne dla człowi
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">Opcja „--minimum-expected-tests” oczekuje pojedynczej niezerowej dodatniej liczby całkowitej
+        <target state="needs-review-translation">Opcja „--minimum-expected-tests” oczekuje pojedynczej niezerowej dodatniej liczby całkowitej
 (np. „--minimum-expected-tests 10”)</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.pt-BR.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.pt-BR.xlf
@@ -591,9 +591,9 @@ Opcionalmente, aceita 'text' (a saída legível por humanos padrão) ou 'json' p
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">'--minimum-expected-tests' espera um único valor inteiro positivo diferente de zero
+        <target state="needs-review-translation">'--minimum-expected-tests' espera um único valor inteiro positivo diferente de zero
 (por exemplo, '--minimum-expected-tests 10')</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.ru.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.ru.xlf
@@ -591,9 +591,9 @@ Optionally accepts 'text' (the default human-readable output) or 'json' to print
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">"--minimum-expected-tests" ожидает единственное ненулевое положительное целое значение
+        <target state="needs-review-translation">"--minimum-expected-tests" ожидает единственное ненулевое положительное целое значение
 (например, "--minimum-expected-tests 10")</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.tr.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.tr.xlf
@@ -591,9 +591,9 @@ Optionally accepts 'text' (the default human-readable output) or 'json' to print
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">'--minimum-expected-tests', sıfır olmayan tek bir pozitif tamsayı değeri bekler
+        <target state="needs-review-translation">'--minimum-expected-tests', sıfır olmayan tek bir pozitif tamsayı değeri bekler
 (ör. '--minimum-expected-tests 10')</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.zh-Hans.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.zh-Hans.xlf
@@ -591,9 +591,9 @@ Optionally accepts 'text' (the default human-readable output) or 'json' to print
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">"--minimum-expected-tests" 应有单个非零正整数值
+        <target state="needs-review-translation">"--minimum-expected-tests" 应有单个非零正整数值
 (例如 "--minimum-expected-tests 10")</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.zh-Hant.xlf b/src/Platform/Microsoft.Testing.Platform/Resources/xlf/PlatformResources.zh-Hant.xlf
@@ -591,9 +591,9 @@ Optionally accepts 'text' (the default human-readable output) or 'json' to print
         <note />
       </trans-unit>
       <trans-unit id="PlatformCommandLineMinimumExpectedTestsOptionSingleArgument">
-        <source>'--minimum-expected-tests' expects a single non-zero positive integer value
+        <source>'--minimum-expected-tests' expects a single non-negative integer value
 (e.g. '--minimum-expected-tests 10')</source>
-        <target state="translated">'--minimum-expected-tests' 需要單一非零的正整數值 
+        <target state="needs-review-translation">'--minimum-expected-tests' 需要單一非零的正整數值 
 (例如 '--minimum-expected-tests 10')</target>
         <note>{Locked="--minimum-expected-tests"}{Locked="--minimum-expected-tests 10"}</note>
       </trans-unit>

diff --git a/...IntegrationTests/Microsoft.Testing.Platform.Acceptance.IntegrationTests/ExecutionTests.cs b/...IntegrationTests/Microsoft.Testing.Platform.Acceptance.IntegrationTests/ExecutionTests.cs
@@ -169,7 +169,19 @@ public async Task Exec_WhenMinimumExpectedTestsIsNegative_ResultIsNotOk(string t
         TestHostResult testHostResult = await testHost.ExecuteAsync("--minimum-expected-tests=-1", cancellationToken: TestContext.CancellationToken);
 
         testHostResult.AssertExitCodeIs(ExitCode.InvalidCommandLine);
-        testHostResult.AssertOutputContains("Option '--minimum-expected-tests' has invalid arguments: '--minimum-expected-tests' expects a single non-zero positive integer value");
+        testHostResult.AssertOutputContains("Option '--minimum-expected-tests' has invalid arguments: '--minimum-expected-tests' expects a single non-negative integer value");
+    }
+
+    [DynamicData(nameof(TargetFrameworks.AllForDynamicData), typeof(TargetFrameworks))]
+    [TestMethod]
+    public async Task Exec_WhenMinimumExpectedTestsIsZeroAndNoTestsRun_ResultIsOk(string tfm)
+    {
+        var testHost = TestInfrastructure.TestHost.LocateFrom(AssetFixture.TargetAssetPath, AssetName, tfm);
+        // The uid filter matches no test, so zero tests run. An explicit '--minimum-expected-tests 0'
+        // accepts that empty run and supersedes the "zero tests ran" (exit code 8) verdict. See issue #7457.
+        TestHostResult testHostResult = await testHost.ExecuteAsync("--filter-uid 2 --minimum-expected-tests 0", cancellationToken: TestContext.CancellationToken);
+
+        testHostResult.AssertExitCodeIs(ExitCode.Success);
     }
 
     [DynamicData(nameof(TargetFrameworks.AllForDynamicData), typeof(TargetFrameworks))]

diff --git a/...ests/Microsoft.Testing.Platform.UnitTests/CommandLine/PlatformCommandLineProviderTests.cs b/...ests/Microsoft.Testing.Platform.UnitTests/CommandLine/PlatformCommandLineProviderTests.cs
@@ -215,9 +215,12 @@ public async Task IsInvalid_When_Both_FilterUid_And_TreenodeFilter_Provided()
     }
 
     [TestMethod]
-    [DataRow("0")]
     [DataRow("-1")]
-    public async Task IsInvalid_When_MinimumExpectedTests_Is_Not_Positive(string minimumExpectedTests)
+    [DataRow("-5")]
+    [DataRow("abc")]
+    [DataRow("")]
+    [DataRow("1.5")]
+    public async Task IsInvalid_When_MinimumExpectedTests_Is_Negative_Or_Not_An_Integer(string minimumExpectedTests)
     {
         var provider = new PlatformCommandLineProvider();
         CommandLineOption option = provider.GetCommandLineOptions().First(x => x.Name == PlatformCommandLineProvider.MinimumExpectedTestsOptionKey);
@@ -227,6 +230,19 @@ public async Task IsInvalid_When_MinimumExpectedTests_Is_Not_Positive(string min
         Assert.AreEqual(PlatformResources.PlatformCommandLineMinimumExpectedTestsOptionSingleArgument, validateOptionsResult.ErrorMessage);
     }
 
+    [TestMethod]
+    [DataRow("0")]
+    [DataRow("1")]
+    [DataRow("10")]
+    public async Task IsValid_When_MinimumExpectedTests_Is_NonNegative_Integer(string minimumExpectedTests)
+    {
+        var provider = new PlatformCommandLineProvider();
+        CommandLineOption option = provider.GetCommandLineOptions().First(x => x.Name == PlatformCommandLineProvider.MinimumExpectedTestsOptionKey);
+
+        ValidationResult validateOptionsResult = await provider.ValidateOptionArgumentsAsync(option, [minimumExpectedTests]).ConfigureAwait(false);
+        Assert.IsTrue(validateOptionsResult.IsValid);
+    }
+
     [TestMethod]
     public async Task IsValid_When_DiscoverTests_HasNoArgument()
     {

diff --git a/test/UnitTests/Microsoft.Testing.Platform.UnitTests/Services/TestApplicationResultTests.cs b/test/UnitTests/Microsoft.Testing.Platform.UnitTests/Services/TestApplicationResultTests.cs
@@ -212,6 +212,23 @@ TestApplicationResult testApplicationResult
         Assert.AreEqual((int)ExitCode.MinimumExpectedTestsPolicyViolation, testApplicationResult.GetProcessExitCode());
     }
 
+    [TestMethod]
+    public void GetProcessExitCodeAsync_If_MinimumExpectedTests_Zero_And_No_Tests_Ran_Returns_Success()
+    {
+        // An explicit `--minimum-expected-tests 0` accepts an empty run, superseding the ZeroTests (8)
+        // verdict. This is how a `dotnet test --test-modules` orchestrator flows "zero is acceptable for
+        // this module" down to each module. See issue #7457.
+        TestApplicationResult testApplicationResult
+            = new(
+                new Mock<IOutputDevice>().Object,
+                new CommandLineOption(PlatformCommandLineProvider.MinimumExpectedTestsOptionKey, ["0"]),
+                new Mock<IEnvironment>().Object,
+                new Mock<IStopPoliciesService>().Object,
+                null);
+
+        Assert.AreEqual((int)ExitCode.Success, testApplicationResult.GetProcessExitCode());
+    }
+
     [TestMethod]
     public void GetProcessExitCodeAsync_If_MinimumExpectedTests_Set_And_No_Tests_Ran_Returns_MinimumExpectedTestsPolicyViolation()
     {