106 lines
3.5 KiB
Python
106 lines
3.5 KiB
Python
"""
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Test that 'stty -a' displays the same output before and after running the lldb command.
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"""
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import lldb
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import io
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import sys
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class TestSTTYBeforeAndAfter(TestBase):
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@classmethod
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def classCleanup(cls):
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"""Cleanup the test byproducts."""
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cls.RemoveTempFile("child_send1.txt")
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cls.RemoveTempFile("child_read1.txt")
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cls.RemoveTempFile("child_send2.txt")
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cls.RemoveTempFile("child_read2.txt")
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@expectedFailureAll(
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hostoslist=["windows"],
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bugnumber="llvm.org/pr22274: need a pexpect replacement for windows",
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)
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@no_debug_info_test
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def test_stty_dash_a_before_and_afetr_invoking_lldb_command(self):
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"""Test that 'stty -a' displays the same output before and after running the lldb command."""
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import pexpect
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if not which("expect"):
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self.skipTest("The 'expect' program cannot be located, skip the test")
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# The expect prompt.
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expect_prompt = "expect[0-9.]+> "
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# The default lldb prompt.
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lldb_prompt = "(lldb) "
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# So that the child gets torn down after the test.
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self.child = pexpect.spawnu("expect")
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child = self.child
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child.expect(expect_prompt)
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child.setecho(True)
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if self.TraceOn():
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child.logfile = sys.stdout
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if self.platformIsDarwin():
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child.sendline("set env(TERM) xterm")
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else:
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child.sendline("set env(TERM) vt100")
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child.expect(expect_prompt)
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child.sendline("puts $env(TERM)")
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child.expect(expect_prompt)
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# Turn on loggings for input/output to/from the child.
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child.logfile_send = child_send1 = io.StringIO()
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child.logfile_read = child_read1 = io.StringIO()
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child.sendline("stty -a")
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child.expect(expect_prompt)
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# Now that the stage1 logging is done, restore logfile to None to
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# stop further logging.
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child.logfile_send = None
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child.logfile_read = None
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# Invoke the lldb command.
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child.sendline(lldbtest_config.lldbExec)
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child.expect_exact(lldb_prompt)
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# Immediately quit.
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child.sendline("quit")
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child.expect(expect_prompt)
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child.logfile_send = child_send2 = io.StringIO()
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child.logfile_read = child_read2 = io.StringIO()
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child.sendline("stty -a")
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child.expect(expect_prompt)
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child.sendline("exit")
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# Now that the stage2 logging is done, restore logfile to None to
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# stop further logging.
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child.logfile_send = None
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child.logfile_read = None
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if self.TraceOn():
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print("\n\nContents of child_send1:")
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print(child_send1.getvalue())
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print("\n\nContents of child_read1:")
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print(child_read1.getvalue())
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print("\n\nContents of child_send2:")
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print(child_send2.getvalue())
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print("\n\nContents of child_read2:")
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print(child_read2.getvalue())
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stty_output1_lines = child_read1.getvalue().splitlines()
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stty_output2_lines = child_read2.getvalue().splitlines()
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zipped = list(zip(stty_output1_lines, stty_output2_lines))
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for tuple in zipped:
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if self.TraceOn():
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print("tuple->%s" % str(tuple))
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# Every line should compare equal until the first blank line.
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if len(tuple[0]) == 0:
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break
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self.assertEqual(tuple[0], tuple[1])
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