| """ |
| Tests navigating in the multiline expression editor. |
| """ |
| |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test.lldbpexpect import PExpectTest |
| |
| class TestCase(PExpectTest): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| arrow_up = "\033[A" |
| arrow_down = "\033[B" |
| |
| # PExpect uses many timeouts internally and doesn't play well |
| # under ASAN on a loaded machine.. |
| @skipIfAsan |
| @skipIfEditlineSupportMissing |
| @expectedFailureAll(oslist=['freebsd'], bugnumber='llvm.org/pr48316') |
| def test_nav_arrow_up(self): |
| """Tests that we can navigate back to the previous line with the up arrow""" |
| self.launch() |
| |
| # Start multiline expression mode by just running 'expr' |
| self.child.sendline("expr") |
| self.child.expect_exact("terminate with an empty line to evaluate") |
| # Create a simple integer expression '123' and press enter. |
| self.child.send("123\n") |
| # We should see the prompt for the second line of our expression. |
| self.child.expect_exact("2: ") |
| # Go back to the first line and change 123 to 124. |
| # Then press enter twice to evaluate our expression. |
| self.child.send(self.arrow_up + "\b4\n\n") |
| # The result of our expression should be 124 (our edited expression) |
| # and not 123 (the one we initially typed). |
| self.child.expect_exact("(int) $0 = 124") |
| |
| self.quit() |
| |
| @skipIfAsan |
| @skipIfEditlineSupportMissing |
| @expectedFailureAll(oslist=['freebsd'], bugnumber='llvm.org/pr48316') |
| def test_nav_arrow_down(self): |
| """Tests that we can navigate to the next line with the down arrow""" |
| self.launch() |
| |
| # Start multiline expression mode by just running 'expr' |
| self.child.sendline("expr") |
| self.child.expect_exact("terminate with an empty line to evaluate") |
| # Create a simple integer expression '111' and press enter. |
| self.child.send("111\n") |
| # We should see the prompt for the second line of our expression. |
| self.child.expect_exact("2: ") |
| # Create another simple integer expression '222'. |
| self.child.send("222") |
| # Go back to the first line and change '111' to '111+' to make |
| # an addition operation that spans two lines. We need to go up to |
| # test that we can go back down again. |
| self.child.send(self.arrow_up + "+") |
| # Go back down to our second line and change '222' to '223' |
| # so that the full expression is now '111+\n223'. |
| # Then press enter twice to evaluate the expression. |
| self.child.send(self.arrow_down + "\b3\n\n") |
| # The result of our expression '111 + 223' should be '334'. |
| # If the expression is '333' then arrow down failed to get |
| # us back to the second line. |
| self.child.expect_exact("(int) $0 = 334") |
| |
| self.quit() |
| |
| @skipIfAsan |
| @skipIfEditlineSupportMissing |
| @expectedFailureAll(oslist=['freebsd'], bugnumber='llvm.org/pr48316') |
| def test_nav_arrow_up_empty_pr49845(self): |
| """Tests that navigating with the up arrow doesn't crash.""" |
| self.launch() |
| |
| # Create an empty history session by only entering a newline. |
| self.child.sendline("expr") |
| self.child.expect_exact("terminate with an empty line to evaluate") |
| self.child.send("\n") |
| self.expect_prompt() |
| |
| # Send just the up arrow in the expression evaluator. This should bring up the previous empty expression. |
| self.child.sendline("expr") |
| self.child.expect_exact("terminate with an empty line to evaluate") |
| self.child.send(self.arrow_up) |
| self.child.expect_exact("1: ") |
| self.child.send("\n") |
| self.expect_prompt() |
| |
| self.quit() |
