Changed TestBase.expect() to allow default 'msg' arg. Converted TestHelp.py.

llvm-svn: 111671

lldb/test/help/TestHelp.py

@@ -15,23 +15,14 @@ class TestHelpCommand(TestBase):
 
     def test_simplehelp(self):
         """A simple test of 'help' command and its output."""
-        res = lldb.SBCommandReturnObject()
-        self.ci.HandleCommand("help", res)
-        self.assertTrue(res.Succeeded() and
-                        res.GetOutput().startswith(
-                'The following is a list of built-in, permanent debugger commands'),
-                        CMD_MSG('help'))
+        self.expect("help",
+            startstr = 'The following is a list of built-in, permanent debugger commands')
 
     def test_help_should_not_hang_emacsshell(self):
         """Command 'set term-width 0' should not hang the help command."""
-        res = lldb.SBCommandReturnObject()
-        self.ci.HandleCommand("set term-width 0", res)
-        self.assertTrue(res.Succeeded(), CMD_MSG('set term-width 0'))
-        self.ci.HandleCommand("help", res)
-        self.assertTrue(res.Succeeded() and
-                        res.GetOutput().startswith(
-                'The following is a list of built-in, permanent debugger commands'),
-                        CMD_MSG('help'))
+        self.runCmd("set term-width 0")
+        self.expect("help",
+            startstr = 'The following is a list of built-in, permanent debugger commands')
 
 
 if __name__ == '__main__':

lldb/test/lldbtest.py

@@ -141,7 +141,7 @@ class TestBase(unittest2.TestCase):
             self.assertTrue(self.res.Succeeded(),
                             msg if msg else CMD_MSG(cmd))
 
-    def expect(self, cmd, msg, startstr=None, substrs=None, verbose=False):
+    def expect(self, cmd, msg=None, startstr=None, substrs=None, verbose=False):
         """
         Similar to runCmd; with additional expect style output matching ability.
 
@@ -150,11 +150,11 @@ class TestBase(unittest2.TestCase):
         message.  We expect the output from running the command to start with
         'startstr' and matches the substrings contained in 'substrs'.
         """
-        # Fail fast if 'msg' is not meaningful.
-        if not msg or len(msg) == 0:
-            raise Exception("Bad 'msg' parameter encountered")
+
+        # First run the command.
         self.runCmd(cmd, verbose = (True if verbose else False))
 
+        # Then compare the output against expected strings.
         output = self.res.GetOutput()
         matched = output.startswith(startstr) if startstr else True
 
@@ -169,5 +169,5 @@ class TestBase(unittest2.TestCase):
                         print "Substring not matched:", str
                     break
 
-        self.assertTrue(matched, msg)
+        self.assertTrue(matched, msg if msg else CMD_MSG(cmd))