lldb/test/API/repl/clang/TestClangREPL.py

   1 import lldb
   2 from lldbsuite.test.decorators import *
   3 from lldbsuite.test.lldbtest import *
   4 from lldbsuite.test.lldbpexpect import PExpectTest
   5
   6
   7 class TestCase(PExpectTest):
   8     def expect_repl(self, expr, substrs=[]):
   9         """Evaluates the expression in the REPL and verifies that the list
  10         of substrs is in the REPL output."""
  11         # Only single line expressions supported.
  12         self.assertNotIn("\n", expr)
  13         self.child.send(expr + "\n")
  14         for substr in substrs:
  15             self.child.expect_exact(substr)
  16         # Look for the start of the next REPL input line.
  17         self.current_repl_line_number += 1
  18         self.child.expect_exact(str(self.current_repl_line_number) + ">")
  19
  20     # PExpect uses many timeouts internally and doesn't play well
  21     # under ASAN on a loaded machine..
  22     @skipIfAsan
  23     @skipIf(oslist=["linux"], archs=["arm", "aarch64"])  # Randomly fails on buildbot
  24     @skipIfEditlineSupportMissing
  25     def test_basic_completion(self):
  26         """Test that we can complete a simple multiline expression"""
  27         self.build()
  28         self.current_repl_line_number = 1
  29
  30         self.launch(executable=self.getBuildArtifact("a.out"), dimensions=(100, 500))
  31         # Try launching the REPL before we have a running target.
  32         self.expect(
  33             "expression --repl -l c --",
  34             substrs=["REPL requires a running target process."],
  35         )
  36
  37         self.expect("b main", substrs=["Breakpoint 1", "address ="])
  38         self.expect("run", substrs=["stop reason = breakpoint 1"])
  39
  40         # Start the REPL.
  41         self.child.send("expression --repl -l c --\n")
  42         self.child.expect_exact("1>")
  43
  44         # Try evaluating a simple expression.
  45         self.expect_repl("3 + 3", substrs=["(int) $0 = 6"])
  46
  47         # Try declaring a persistent variable.
  48         self.expect_repl(
  49             "long $persistent = 7; 5",
  50             substrs=["(int) $1 = 5", "(long) $persistent = 7"],
  51         )
  52
  53         # Try using the persistent variable from before.
  54         self.expect_repl("$persistent + 10", substrs=["(long) $2 = 17"])
  55
  56         self.quit()