update TestRunCommandInterpreterAPI to use SBFile

[lawrence_danna]

Summary

If you look at what this test is doing, it's actually quite
mysterious why it works at all. It sets the input file
inside a "with open". As soon as the with block ends,
that file will be closed. And yet somehow LLDB reads
commands from it anyway. What's actually happening is that
the file descriptor gets dup'd when something inside LLDB
calls File::GetStream(). I think it's fair to say that
what this test is doing is illegal and it has no right
to expect it to work.

This patch updates the test with two cases. One uses
the SBFile api, and actually transfers ownership of
the original file descriptor to the debugger. The other
just uses the old FILE* API, but in a sane way.

I also set NO_DEBUG_INFO_TESTCASE, because this test doesn't
use any debug info and doesn't need to run three times.

[labath]

Makes sense to me.

[stella.stamenova]

This is failing on the windows bot. There was already another failure, so you probably didn't get an email:

http://lab.llvm.org:8011/builders/lldb-x64-windows-ninja/builds/9727
http://lab.llvm.org:8011/builders/lldb-x64-windows-ninja/builds/9760

[stella.stamenova]

This is still failing on the Windows bot. Please fix it ASAP or revert it.

[lawrence_danna]

In D68738#1708159, @stella.stamenova wrote:

This is still failing on the Windows bot. Please fix it ASAP or revert it.

Sorry,i didn’t see this. I’ll fix it today

[lawrence_danna]

In D68738#1708159, @stella.stamenova wrote:

This is still failing on the Windows bot. Please fix it ASAP or revert it.

fix here https://reviews.llvm.org/D68951

lldb/packages/Python/lldbsuite/test/python_api/interpreter/TestRunCommandInterpreterAPI.py

 """Test the RunCommandInterpreter API."""
 
 import os
 import lldb
 from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
 
+class CommandRunInterpreterLegacyAPICase(TestBase):
+
+    NO_DEBUG_INFO_TESTCASE = True
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        TestBase.setUp(self)
+
+        self.stdin_path = self.getBuildArtifact("stdin.txt")
+
+        with open(self.stdin_path, 'w') as input_handle:
+            input_handle.write("nonexistingcommand\nquit")
+
+        # Python will close the file descriptor if all references
+        # to the filehandle object lapse, so we need to keep one
+        # around.
+        self.filehandle = open(self.stdin_path, 'r')
+        self.dbg.SetInputFileHandle(self.filehandle, False)
+
+        # No need to track the output
+        self.devnull = open(os.devnull, 'w')
+        self.dbg.SetOutputFileHandle(self.devnull, False)
+        self.dbg.SetErrorFileHandle (self.devnull, False)
+
+    @add_test_categories(['pyapi'])
+    def test_run_session_with_error_and_quit(self):
+        """Run non-existing and quit command returns appropriate values"""
+
+        n_errors, quit_requested, has_crashed = self.dbg.RunCommandInterpreter(
+                True, False, lldb.SBCommandInterpreterRunOptions(), 0, False,
+                False)
+
+        self.assertGreater(n_errors, 0)
+        self.assertTrue(quit_requested)
+        self.assertFalse(has_crashed)
+
+
 class CommandRunInterpreterAPICase(TestBase):
 
+    NO_DEBUG_INFO_TESTCASE = True
     mydir = TestBase.compute_mydir(__file__)
 
     def setUp(self):
         TestBase.setUp(self)
 
         self.stdin_path = self.getBuildArtifact("stdin.txt")
 
         with open(self.stdin_path, 'w') as input_handle:
             input_handle.write("nonexistingcommand\nquit")
 
-        with open(self.stdin_path, 'r') as input_handle:
-            self.dbg.SetInputFileHandle(input_handle, False)
+        self.dbg.SetInputFile(open(self.stdin_path, 'r'))
 
         # No need to track the output
         devnull = open(os.devnull, 'w')
-        self.dbg.SetOutputFileHandle(devnull, False)
-        self.dbg.SetErrorFileHandle(devnull, False)
+        self.dbg.SetOutputFile(devnull)
+        self.dbg.SetErrorFile(devnull)
 
     @add_test_categories(['pyapi'])
     def test_run_session_with_error_and_quit(self):
         """Run non-existing and quit command returns appropriate values"""
 
         n_errors, quit_requested, has_crashed = self.dbg.RunCommandInterpreter(
                 True, False, lldb.SBCommandInterpreterRunOptions(), 0, False,
                 False)
 
         self.assertGreater(n_errors, 0)
         self.assertTrue(quit_requested)
         self.assertFalse(has_crashed)