[lldb] Restructure test folders to match LLDB command hierarchy

Summary:
As discussed on lldb-dev, this patch moves some LLDB tests into a hierarchy that more closely
resembles the commands we use in the LLDB interpreter. This patch should only move tests
that use the command interpreter and shouldn't touch any tests that primarily test the SB API.

Reviewers: #lldb, jfb, JDevlieghere

Reviewed By: #lldb, JDevlieghere

Subscribers: dexonsmith, arphaman, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D67033

llvm-svn: 370605

3 files changed, 128 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/unwind_expression/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/unwind_expression/Makefile
new file mode 100644
index 00000000000..8a7102e347a
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/unwind_expression/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/unwind_expression/TestUnwindExpression.py b/lldb/packages/Python/lldbsuite/test/commands/expression/unwind_expression/TestUnwindExpression.py
new file mode 100644
index 00000000000..d42ee3de404
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/unwind_expression/TestUnwindExpression.py
@@ -0,0 +1,101 @@
+"""
+Test stopping at a breakpoint in an expression, and unwinding from there.
+"""
+
+from __future__ import print_function
+
+
+import unittest2
+
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class UnwindFromExpressionTest(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+    main_spec = lldb.SBFileSpec("main.cpp", False)
+
+    def build_and_run_to_bkpt(self):
+        self.build()
+
+        (target, process, self.thread, bkpt) = lldbutil.run_to_source_breakpoint(self,
+                "// Set a breakpoint here to get started", self.main_spec)
+
+        # Next set a breakpoint in this function, set up Expression options to stop on
+        # breakpoint hits, and call the function.
+        self.fun_bkpt = self.target().BreakpointCreateBySourceRegex(
+            "// Stop inside the function here.", self.main_spec)
+        self.assertTrue(self.fun_bkpt, VALID_BREAKPOINT)
+
+
+    @no_debug_info_test
+    @expectedFailureAll(bugnumber="llvm.org/pr33164")
+    def test_conditional_bktp(self):
+        """
+        Test conditional breakpoint handling in the IgnoreBreakpoints = False case
+        """
+        self.build_and_run_to_bkpt()
+
+        self.fun_bkpt.SetCondition("0") # Should not get hit
+        options = lldb.SBExpressionOptions()
+        options.SetIgnoreBreakpoints(False)
+        options.SetUnwindOnError(False)
+
+        main_frame = self.thread.GetFrameAtIndex(0)
+        val = main_frame.EvaluateExpression("second_function(47)", options)
+        self.assertTrue(
+            val.GetError().Success(),
+            "We did complete the execution.")
+        self.assertEquals(47, val.GetValueAsSigned())
+
+
+    @add_test_categories(['pyapi'])
+    @expectedFlakeyNetBSD
+    def test_unwind_expression(self):
+        """Test unwinding from an expression."""
+        self.build_and_run_to_bkpt()
+
+        # Run test with varying one thread timeouts to also test the halting
+        # logic in the IgnoreBreakpoints = False case
+        self.do_unwind_test(self.thread, self.fun_bkpt, 1000)
+        self.do_unwind_test(self.thread, self.fun_bkpt, 100000)
+
+    def do_unwind_test(self, thread, bkpt, timeout):
+        #
+        # Use Python API to evaluate expressions while stopped in a stack frame.
+        #
+        main_frame = thread.GetFrameAtIndex(0)
+
+        options = lldb.SBExpressionOptions()
+        options.SetIgnoreBreakpoints(False)
+        options.SetUnwindOnError(False)
+        options.SetOneThreadTimeoutInMicroSeconds(timeout)
+
+        val = main_frame.EvaluateExpression("a_function_to_call()", options)
+
+        self.assertTrue(
+            val.GetError().Fail(),
+            "We did not complete the execution.")
+        error_str = val.GetError().GetCString()
+        self.assertTrue(
+            "Execution was interrupted, reason: breakpoint" in error_str,
+            "And the reason was right.")
+
+        thread = lldbutil.get_one_thread_stopped_at_breakpoint(
+            self.process(), bkpt)
+        self.assertTrue(
+            thread.IsValid(),
+            "We are indeed stopped at our breakpoint")
+
+        # Now unwind the expression, and make sure we got back to where we
+        # started.
+        error = thread.UnwindInnermostExpression()
+        self.assertTrue(error.Success(), "We succeeded in unwinding")
+
+        cur_frame = thread.GetFrameAtIndex(0)
+        self.assertTrue(
+            cur_frame.IsEqual(main_frame),
+            "We got back to the main frame.")
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/unwind_expression/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/unwind_expression/main.cpp
new file mode 100644
index 00000000000..56b06f31ecc
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/unwind_expression/main.cpp
@@ -0,0 +1,22 @@
+static int static_value = 0;
+
+int
+a_function_to_call()
+{
+    static_value++; // Stop inside the function here.
+    return static_value;
+}
+
+int second_function(int x){
+  for(int i=0; i<10; ++i) {
+    a_function_to_call();
+  }
+  return x;
+}
+
+int main (int argc, char const *argv[])
+{
+    a_function_to_call();  // Set a breakpoint here to get started 
+    second_function(1);
+    return 0;
+}