Move lldb/test to lldb/packages/Python/lldbsuite/test.

This is the conclusion of an effort to get LLDB's Python code
structured into a bona-fide Python package.  This has a number
of benefits, but most notably the ability to more easily share
Python code between different but related pieces of LLDB's Python
infrastructure (for example, `scripts` can now share code with
`test`).

llvm-svn: 251532

3 files changed, 99 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/expression_command/expr-in-syscall/Makefile b/lldb/packages/Python/lldbsuite/test/expression_command/expr-in-syscall/Makefile
new file mode 100644
index 00000000000..8a7102e347a
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/expression_command/expr-in-syscall/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/expression_command/expr-in-syscall/TestExpressionInSyscall.py b/lldb/packages/Python/lldbsuite/test/expression_command/expr-in-syscall/TestExpressionInSyscall.py
new file mode 100644
index 00000000000..f115f13f773
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/expression_command/expr-in-syscall/TestExpressionInSyscall.py
@@ -0,0 +1,82 @@
+"""Test that we are able to evaluate expressions when the inferior is blocked in a syscall"""
+
+from __future__ import print_function
+
+import use_lldb_suite
+
+import os
+import lldb
+from lldbtest import *
+import lldbutil
+
+
+class ExprSyscallTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @expectedFailureWindows("llvm.org/pr21765") # Also getpid() is not a function on Windows anyway
+    def test_setpgid(self):
+        self.build()
+        self.expr_syscall()
+
+    def expr_syscall(self):
+        exe = os.path.join(os.getcwd(), 'a.out')
+
+        # Create a target by the debugger.
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        listener = lldb.SBListener("my listener")
+
+        # launch the inferior and don't wait for it to stop
+        self.dbg.SetAsync(True)
+        error = lldb.SBError()
+        process = target.Launch (listener,
+                None,      # argv
+                None,      # envp
+                None,      # stdin_path
+                None,      # stdout_path
+                None,      # stderr_path
+                None,      # working directory
+                0,         # launch flags
+                False,     # Stop at entry
+                error)     # error
+
+        self.assertTrue(process and process.IsValid(), PROCESS_IS_VALID)
+
+        event = lldb.SBEvent()
+
+        # Give the child enough time to reach the syscall,
+        # while clearing out all the pending events.
+        # The last WaitForEvent call will time out after 2 seconds.
+        while listener.WaitForEvent(2, event):
+            pass
+
+        # now the process should be running (blocked in the syscall)
+        self.assertEqual(process.GetState(), lldb.eStateRunning, "Process is running")
+
+        # send the process a signal
+        process.SendAsyncInterrupt()
+        while listener.WaitForEvent(2, event):
+            pass
+
+        # as a result the process should stop
+        # in all likelihood we have stopped in the middle of the sleep() syscall
+        self.assertEqual(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED)
+        thread = process.GetSelectedThread()
+
+        # try evaluating a couple of expressions in this state
+        self.expect("expr release_flag = 1", substrs = [" = 1"])
+        self.expect("print (int)getpid()", substrs = [str(process.GetProcessID())])
+
+        # and run the process to completion
+        process.Continue()
+
+        # process all events
+        while listener.WaitForEvent(10, event):
+            new_state = lldb.SBProcess.GetStateFromEvent(event)
+            if new_state == lldb.eStateExited:
+                break
+
+        self.assertEqual(process.GetState(), lldb.eStateExited)
+        self.assertEqual(process.GetExitStatus(), 0)
diff --git a/lldb/packages/Python/lldbsuite/test/expression_command/expr-in-syscall/main.cpp b/lldb/packages/Python/lldbsuite/test/expression_command/expr-in-syscall/main.cpp
new file mode 100644
index 00000000000..743b69434d5
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/expression_command/expr-in-syscall/main.cpp
@@ -0,0 +1,12 @@
+#include <chrono>
+#include <thread>
+
+volatile int release_flag = 0;
+
+int main(int argc, char const *argv[])
+{
+    while (! release_flag) // Wait for debugger to attach
+        std::this_thread::sleep_for(std::chrono::seconds(3));
+
+    return 0;
+}