Fix !N and !-N commands and add a test case.

<rdar://problem/31713267>

llvm-svn: 300785

1 files changed, 45 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/history/TestHistoryRecall.py b/lldb/packages/Python/lldbsuite/test/functionalities/history/TestHistoryRecall.py
new file mode 100644
index 00000000000..90bd64901ee
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/history/TestHistoryRecall.py
@@ -0,0 +1,45 @@
+"""
+Make sure the !N and !-N commands work properly.
+"""
+
+from __future__ import print_function
+
+
+import os
+import time
+import re
+import lldb
+import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.lldbtest import *
+
+
+class TestHistoryRecall(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # If your test case doesn't stress debug info, the 
+    # set this to true.  That way it won't be run once for
+    # each debug info format.
+    NO_DEBUG_INFO_TESTCASE = True
+
+    def test_history_recall(self):
+        """Test the !N and !-N functionality of the command interpreter."""
+        self.sample_test()
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+
+    def sample_test(self):
+        interp = self.dbg.GetCommandInterpreter()
+        result = lldb.SBCommandReturnObject()
+        interp.HandleCommand("command history", result, True)
+        interp.HandleCommand("platform list", result, True)
+        
+        interp.HandleCommand("!0", result, False)
+        self.assertTrue(result.Succeeded(), "!0 command did not work: %s"%(result.GetError()))
+        self.assertTrue("command history" in result.GetOutput(), "!0 didn't rerun command history")
+
+        interp.HandleCommand("!-1", result, False)
+        self.assertTrue(result.Succeeded(), "!-1 command did not work: %s"%(result.GetError()))
+        self.assertTrue("host:" in result.GetOutput(), "!-1 didn't rerun platform list.")