Test for Debugger.Break().

src/mono/wasm/debugger/DebuggerTestSuite/BreakpointTests.cs

@@ -658,5 +658,28 @@ await EvaluateAndCheck(
                 "VisibleMethod"
             );
         }
+
+        [Fact]
+        public async Task DebuggerAttributeStopOnDebuggerHiddenCallWithDebuggerBreakCall()
+        {
+            var bp_init = await SetBreakpointInMethod("debugger-test.dll", "DebuggerAttribute", "RunDebuggerBreak", 1);
+            await EvaluateAndCheck(
+                "window.setTimeout(function() { invoke_static_method('[debugger-test] DebuggerAttribute:RunDebuggerBreak'); }, 1);",
+                "dotnet://debugger-test.dll/debugger-test.cs",
+                bp_init.Value["locations"][0]["lineNumber"].Value<int>(),
+                bp_init.Value["locations"][0]["columnNumber"].Value<int>(),
+                "RunDebuggerBreak"
+            );
+            await SendCommandAndCheck(null, "Debugger.resume",
+                null,
+                bp_init.Value["locations"][0]["lineNumber"].Value<int>() + 1,
+                bp_init.Value["locations"][0]["lineNumber"].Value<int>() + 1,
+                "RunDebuggerBreak");
+            await SendCommandAndCheck(null, "Debugger.resume",
+                null,
+                835,
+                8,
+                "VisibleMethodDebuggerBreak");
+        }
     }
 }

src/mono/wasm/debugger/tests/debugger-test/debugger-test.cs

@@ -818,14 +818,33 @@ public static void HiddenMethod()
         currentCount++;
     }
 
+    [System.Diagnostics.DebuggerHidden]
+    public static void HiddenMethodDebuggerBreak()
+    {
+        System.Diagnostics.Debugger.Break();
+        currentCount++;
+    }
+
     public static void VisibleMethod()
     {
         currentCount++;
     }
 
+    public static void VisibleMethodDebuggerBreak()
+    {
+        System.Diagnostics.Debugger.Break();
+        currentCount++;
+    }
+
     public static void Run()
     {
         HiddenMethod();
         VisibleMethod();
     }
+
+    public static void RunDebuggerBreak()
+    {
+        HiddenMethodDebuggerBreak();
+        VisibleMethodDebuggerBreak();
+    }
 }