1 files changed, 57 insertions, 0 deletions
diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/mtc/simple/TestMTCSimple.py b/lldb/packages/Python/lldbsuite/test/functionalities/mtc/simple/TestMTCSimple.py
new file mode 100644
index 00000000000..0cf259da49b
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/mtc/simple/TestMTCSimple.py
@@ -0,0 +1,57 @@
+"""
+Tests basic Main Thread Checker support (detecting a main-thread-only violation).
+"""
+
+import os
+import time
+import lldb
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test.decorators import *
+import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.lldbplatformutil import *
+import json
+
+
+class MTCSimpleTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @skipUnlessDarwin
+    def test(self):
+        self.mtc_dylib_path = findMainThreadCheckerDylib()
+        if self.mtc_dylib_path == "":
+            self.skipTest("This test requires libMainThreadChecker.dylib.")
+
+        self.build()
+        self.mtc_tests()
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+
+    def mtc_tests(self):
+        # Load the test
+        exe = os.path.join(os.getcwd(), "a.out")
+        self.expect("file " + exe, patterns=["Current executable set to .*a.out"])
+
+        self.runCmd("env DYLD_INSERT_LIBRARIES=%s" % self.mtc_dylib_path)
+        self.runCmd("run")
+
+        process = self.dbg.GetSelectedTarget().process
+        thread = process.GetSelectedThread()
+        frame = thread.GetSelectedFrame()
+
+        self.expect("thread info", substrs=['stop reason = -[NSView superview] must be called from main thread only'])
+
+        self.expect(
+            "thread info -s",
+            substrs=["instrumentation_class", "api_name", "class_name", "selector", "description"])
+        self.assertEqual(thread.GetStopReason(), lldb.eStopReasonInstrumentation)
+        output_lines = self.res.GetOutput().split('\n')
+        json_line = '\n'.join(output_lines[2:])
+        data = json.loads(json_line)
+        self.assertEqual(data["instrumentation_class"], "MainThreadChecker")
+        self.assertEqual(data["api_name"], "-[NSView superview]")
+        self.assertEqual(data["class_name"], "NSView")
+        self.assertEqual(data["selector"], "superview")
+        self.assertEqual(data["description"], "-[NSView superview] must be called from main thread only")