[tools/perf] Raise parser error if trybot command failed to find a matching benchmark

tools/perf/scripts_smoke_unittest.py

Index: tools/perf/scripts_smoke_unittest.py
diff --git a/tools/perf/scripts_smoke_unittest.py b/tools/perf/scripts_smoke_unittest.py
index 503d3890cde56e68af8840c293a25ae8ffe58b50..bfeadb379fd5cba891ec648c7a4fc7c7b5b0f736 100644
--- a/tools/perf/scripts_smoke_unittest.py
+++ b/tools/perf/scripts_smoke_unittest.py
@@ -43,6 +43,12 @@ class ScriptsSmokeTest(unittest.TestCase):
     self.assertIn('Pass --browser to list benchmarks', stdout)
     self.assertIn('dummy_benchmark.stable_benchmark_1', stdout)
 
+  def testRunTrybotWithTypo(self):
+    return_code, stdout = self.RunPerfScript('run_benchmark try linux octaenz')
+    self.assertIn('No benchmark named "octaenz"', stdout)
+    self.assertIn('octane', stdout)
+    self.assertNotEqual(return_code, 0)
+
   def testRunRecordWprHelp(self):
     return_code, stdout = self.RunPerfScript('record_wpr')
     self.assertEquals(return_code, 0, stdout)