Tweaking the buffer size and fixing the python format.

Author: ashgti

lldb/test/API/tools/lldb-dap/output/TestDAP_output.py

@@ -2,28 +2,22 @@
 Test lldb-dap output events
 """
 
-import dap_server
 from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
-from lldbsuite.test import lldbutil
 import lldbdap_testcase
-import re
 
 
 class TestDAP_output(lldbdap_testcase.DAPTestCaseBase):
     def test_output(self):
         program = self.getBuildArtifact("a.out")
         self.build_and_launch(program)
         source = "main.c"
-        main_source_path = self.getSourcePath(source)
         lines = [line_number(source, "// breakpoint 1")]
         breakpoint_ids = self.set_source_breakpoints(source, lines)
         self.continue_to_breakpoints(breakpoint_ids)
 
-        output = self.collect_stdout(
-            timeout_secs=1.0,
-            pattern="abcdef"
-        )
+        # Ensure partial messages are still sent.
+        output = self.collect_stdout(timeout_secs=1.0, pattern="abcdef")
         self.assertTrue(output and len(output) > 0, "expect no program output")
 
         self.continue_to_exit()
@@ -33,5 +27,5 @@ def test_output(self):
         self.assertIn(
             "abcdefghi\r\nhello world\r\n",
             output,
-            'full output not found in: ' + output
-        )        
+            'full output not found in: ' + output,
+        )

lldb/tools/lldb-dap/lldb-dap.cpp

@@ -399,7 +399,7 @@ void SendProcessEvent(LaunchMethod launch_method) {
 // Grab any STDOUT and STDERR from the process and send it up to VS Code
 // via an "output" event to the "stdout" and "stderr" categories.
 void SendStdOutStdErr(lldb::SBProcess &process) {
-  char buffer[1024];
+  char buffer[4096];
   size_t count;
   while ((count = process.GetSTDOUT(buffer, sizeof(buffer))) > 0)
     g_dap.SendOutput(OutputType::Stdout, llvm::StringRef(buffer, count));