vendor/lldb/lldb-trunk-r290819

1 files changed, 118 insertions, 12 deletions

diff --git a/packages/Python/lldbsuite/test/tools/lldb-mi/syntax/TestMiSyntax.py b/packages/Python/lldbsuite/test/tools/lldb-mi/syntax/TestMiSyntax.py
index a40e49f70e7e..02059080f305 100644
--- a/packages/Python/lldbsuite/test/tools/lldb-mi/syntax/TestMiSyntax.py
+++ b/packages/Python/lldbsuite/test/tools/lldb-mi/syntax/TestMiSyntax.py
@@ -5,22 +5,23 @@ Test that the lldb-mi driver understands MI command syntax.
 from __future__ import print_function
 
 
-
 import lldbmi_testcase
 from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
 from lldbsuite.test import lldbutil
+from functools import reduce
+
 
 class MiSyntaxTestCase(lldbmi_testcase.MiTestCaseBase):
 
     mydir = TestBase.compute_mydir(__file__)
 
-    @skipIfWindows #llvm.org/pr24452: Get lldb-mi tests working on Windows
-    @skipIfFreeBSD # llvm.org/pr22411: Failure presumably due to known thread races
+    @skipIfWindows  # llvm.org/pr24452: Get lldb-mi tests working on Windows
+    @skipIfFreeBSD  # llvm.org/pr22411: Failure presumably due to known thread races
     def test_lldbmi_tokens(self):
         """Test that 'lldb-mi --interpreter' prints command tokens."""
 
-        self.spawnLldbMi(args = None)
+        self.spawnLldbMi(args=None)
 
         # Load executable
         self.runCmd("000-file-exec-and-symbols %s" % self.myexe)
@@ -38,8 +39,8 @@ class MiSyntaxTestCase(lldbmi_testcase.MiTestCaseBase):
         self.expect("0000000000000000000003\^running")
         self.expect("\*stopped,reason=\"exited-normally\"")
 
-    @skipIfWindows #llvm.org/pr24452: Get lldb-mi tests working on Windows
-    @skipIfFreeBSD # llvm.org/pr22411: Failure presumably due to known thread races
+    @skipIfWindows  # llvm.org/pr24452: Get lldb-mi tests working on Windows
+    @skipIfFreeBSD  # llvm.org/pr22411: Failure presumably due to known thread races
     def test_lldbmi_specialchars(self):
         """Test that 'lldb-mi --interpreter' handles complicated strings."""
 
@@ -48,10 +49,12 @@ class MiSyntaxTestCase(lldbmi_testcase.MiTestCaseBase):
         os.symlink(self.myexe, complicated_myexe)
         self.addTearDownHook(lambda: os.unlink(complicated_myexe))
 
-        self.spawnLldbMi(args = "\"%s\"" % complicated_myexe)
+        self.spawnLldbMi(args="\"%s\"" % complicated_myexe)
 
         # Test that the executable was loaded
-        self.expect("-file-exec-and-symbols \"%s\"" % complicated_myexe, exactly = True)
+        self.expect(
+            "-file-exec-and-symbols \"%s\"" %
+            complicated_myexe, exactly=True)
         self.expect("\^done")
 
         # Check that it was loaded correctly
@@ -61,13 +64,15 @@ class MiSyntaxTestCase(lldbmi_testcase.MiTestCaseBase):
         self.expect("\^running")
         self.expect("\*stopped,reason=\"breakpoint-hit\"")
 
-    @skipIfWindows #llvm.org/pr24452: Get lldb-mi tests working on Windows
-    @skipIfFreeBSD # llvm.org/pr22411: Failure presumably due to known thread races
-    @expectedFailureAll(oslist=["linux"], bugnumber="Failing in ~6/600 dosep runs (build 3120-3122)")
+    @skipIfWindows  # llvm.org/pr24452: Get lldb-mi tests working on Windows
+    @skipIfFreeBSD  # llvm.org/pr22411: Failure presumably due to known thread races
+    @expectedFailureAll(
+        oslist=["linux"],
+        bugnumber="Failing in ~6/600 dosep runs (build 3120-3122)")
     def test_lldbmi_process_output(self):
         """Test that 'lldb-mi --interpreter' wraps process output correctly."""
 
-        self.spawnLldbMi(args = None)
+        self.spawnLldbMi(args=None)
 
         # Load executable
         self.runCmd("-file-exec-and-symbols %s" % self.myexe)
@@ -80,3 +85,104 @@ class MiSyntaxTestCase(lldbmi_testcase.MiTestCaseBase):
         # Test that a process output is wrapped correctly
         self.expect("\@\"'\\\\r\\\\n\"")
         self.expect("\@\"` - it's \\\\\\\\n\\\\x12\\\\\"\\\\\\\\\\\\\"")
+
+    @skipIfWindows  # llvm.org/pr24452: Get lldb-mi tests working on Windows
+    @skipIfFreeBSD  # llvm.org/pr22411: Failure presumably due to known thread races
+    @expectedFailureAll(oslist=["macosx"], bugnumber="rdar://28805064")
+    def test_lldbmi_output_grammar(self):
+        """Test that 'lldb-mi --interpreter' uses standard output syntax."""
+
+        self.spawnLldbMi(args=None)
+        self.child.setecho(False)
+
+        # Run all commands simultaneously
+        self.runCmd("-unknown-command")
+        self.runCmd("-file-exec-and-symbols %s" % self.myexe)
+        self.runCmd("-break-insert -f main")
+        self.runCmd("-gdb-set target-async off")
+        self.runCmd("-exec-run")
+        self.runCmd("-gdb-set target-async on")
+        self.runCmd("-exec-continue")
+        self.runCmd("-gdb-exit")
+
+        # Test that the program's output matches to the following pattern:
+        # ( async-record | stream-record )* [ result-record ] "(gdb)" nl
+        async_record = "^[0-9]*(\*|\+|=).+?\n"  # 1
+        stream_record = "^(~|@|&).+?\n"         # 2
+        result_record = "^[0-9]*\^.+?\n"        # 3
+        prompt = "^\(gdb\)\r\n"                 # 4
+        command = "^\r\n"                       # 5 (it looks like empty line for pexpect)
+        error = "^.+?\n"                        # 6
+        import pexpect                          # 7 (EOF)
+        all_patterns = [
+            async_record,
+            stream_record,
+            result_record,
+            prompt,
+            command,
+            error,
+            pexpect.EOF]
+
+        # Routines to get a bit-mask for the specified list of patterns
+        def get_bit(pattern): return all_patterns.index(pattern)
+        def get_mask(pattern): return 1 << get_bit(pattern)
+        def or_op(x, y): return x | y
+        def get_state(*args): return reduce(or_op, map(get_mask, args))
+
+        next_state = get_state(command)
+        while True:
+            it = self.expect(all_patterns)
+            matched_pattern = all_patterns[it]
+
+            # Check that state is acceptable
+            if not (next_state & get_mask(matched_pattern)):
+                self.fail(
+                    "error: inconsistent pattern '%s' for state %#x (matched string: %s)" %
+                    (repr(matched_pattern), next_state, self.child.after))
+            elif matched_pattern == async_record or matched_pattern == stream_record:
+                next_state = get_state(
+                    async_record,
+                    stream_record,
+                    result_record,
+                    prompt)
+            elif matched_pattern == result_record:
+                # FIXME lldb-mi prints async-records out of turn
+                # ```
+                #   ^done
+                #   (gdb)
+                #   ^running
+                #   =thread-group-started,id="i1",pid="13875"
+                #   (gdb)
+                # ```
+                # Therefore to pass that test I changed the grammar's rule:
+                #   next_state = get_state(prompt)
+                # to:
+                next_state = get_state(async_record, prompt)
+            elif matched_pattern == prompt:
+                # FIXME lldb-mi prints the prompt out of turn
+                # ```
+                #   ^done
+                #   (gdb)
+                #   ^running
+                #   (gdb)
+                #   (gdb)
+                # ```
+                # Therefore to pass that test I changed the grammar's rule:
+                #   next_state = get_state(async_record, stream_record, result_record, command, pexpect.EOF)
+                # to:
+                next_state = get_state(
+                    async_record,
+                    stream_record,
+                    result_record,
+                    prompt,
+                    command,
+                    pexpect.EOF)
+            elif matched_pattern == command:
+                next_state = get_state(
+                    async_record,
+                    stream_record,
+                    result_record)
+            elif matched_pattern == pexpect.EOF:
+                break
+            else:
+                self.fail("error: pexpect returned an unknown state")