122 lines
4.1 KiB
Python
122 lines
4.1 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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from __future__ import print_function
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import os
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import lldb
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from lldbsuite.test.lldbtest import *
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class TestSTTYBeforeAndAfter(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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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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@expectedFailureHostWindows("llvm.org/pr22274: need a pexpect replacement for windows")
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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.spawn('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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with open('child_send1.txt', 'w') as f_send1:
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with open('child_read1.txt', 'w') as f_read1:
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child.logfile_send = f_send1
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child.logfile_read = f_read1
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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('%s %s' % (lldbtest_config.lldbExec, self.lldbOption))
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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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with open('child_send2.txt', 'w') as f_send2:
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with open('child_read2.txt', 'w') as f_read2:
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child.logfile_send = f_send2
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child.logfile_read = f_read2
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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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with open('child_send1.txt', 'r') as fs:
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if self.TraceOn():
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print("\n\nContents of child_send1.txt:")
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print(fs.read())
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with open('child_read1.txt', 'r') as fr:
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from_child1 = fr.read()
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if self.TraceOn():
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print("\n\nContents of child_read1.txt:")
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print(from_child1)
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with open('child_send2.txt', 'r') as fs:
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if self.TraceOn():
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print("\n\nContents of child_send2.txt:")
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print(fs.read())
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with open('child_read2.txt', 'r') as fr:
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from_child2 = fr.read()
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if self.TraceOn():
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print("\n\nContents of child_read2.txt:")
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print(from_child2)
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stty_output1_lines = from_child1.splitlines()
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stty_output2_lines = from_child2.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.assertTrue(tuple[0] == tuple[1])
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