| """ | |
| 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): | |
| 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") | |
| @skipIf(oslist=["linux"], archs=["arm$", "aarch64"]) # Randomly fails on buildbot | |
| 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) $0 = 124") | |
| self.quit() | |
| @skipIfAsan | |
| @skipIfEditlineSupportMissing | |
| @expectedFailureAll(oslist=["freebsd"], bugnumber="llvm.org/pr48316") | |
| @skipIf(oslist=["linux"], archs=["arm$", "aarch64"]) # Randomly fails on buildbot | |
| 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) $0 = 334") | |
| self.quit() | |
| @skipIfAsan | |
| @skipIfEditlineSupportMissing | |
| @skipIf(oslist=["linux"], archs=["arm$", "aarch64"]) # Randomly fails on buildbot | |
| def test_nav_arrow_up_empty(self): | |
| """ | |
| Tests that navigating with the up arrow doesn't crash and skips | |
| empty history entries. | |
| """ | |
| self.launch() | |
| # Create a real history entry '456' and then follow up with an | |
| # empty entry (that shouldn't be saved). | |
| self.child.sendline("expr") | |
| self.child.expect_exact("terminate with an empty line to evaluate") | |
| self.child.send("456\n\n") | |
| self.expect_prompt() | |
| self.child.sendline("expr") | |
| self.child.expect_exact("terminate with an empty line to evaluate") | |
| self.child.send("\n") | |
| self.expect_prompt() | |
| # The up arrow should recall the actual history entry and not the | |
| # the empty entry (as that one shouldn't have been saved). | |
| 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("456") | |
| self.child.send("\n\n") | |
| self.expect_prompt() | |
| self.quit() |