At the moment nearly every test calls something similar to
`self.dbg.CreateTarget(self.getBuildArtifact("a.out"))` and them sometimes
checks if the created target is actually valid with something like
`self.assertTrue(target.IsValid(), "some useless text")`.
Beside being really verbose the error messages generated by this pattern are
always just indicating that the target failed to be created but now why.
This patch introduces a helper function `createTestTarget` to our Test class
that creates the target with the much more verbose `CreateTarget` overload that
gives us back an SBError (with a fancy error). If the target couldn't be created
the function prints out the SBError that LLDB returned and asserts for us. It
also defaults to the "a.out" build artifact path that nearly all tests are using
to avoid to hardcode "a.out" in every test.
I converted a bunch of tests to the new function but I'll do the rest of the
test suite as follow ups.
Reviewed By: JDevlieghere
Differential Revision: https://reviews.llvm.org/D102771
209 lines
7.0 KiB
Python
209 lines
7.0 KiB
Python
"""
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Test lldb process launch flags.
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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.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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import six
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class ProcessLaunchTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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NO_DEBUG_INFO_TESTCASE = True
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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self.runCmd("settings set auto-confirm true")
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def tearDown(self):
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self.runCmd("settings clear auto-confirm")
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TestBase.tearDown(self)
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@skipIfRemote
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@skipIfReproducer
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def test_io(self):
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"""Test that process launch I/O redirection flags work properly."""
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self.build()
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exe = self.getBuildArtifact("a.out")
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self.expect("file " + exe,
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patterns=["Current executable set to .*a.out"])
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in_file = os.path.join(self.getSourceDir(), "input-file.txt")
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out_file = lldbutil.append_to_process_working_directory(self, "output-test.out")
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err_file = lldbutil.append_to_process_working_directory(self, "output-test.err")
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# Make sure the output files do not exist before launching the process
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try:
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os.remove(out_file)
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except OSError:
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pass
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try:
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os.remove(err_file)
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except OSError:
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pass
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launch_command = "process launch -i '{0}' -o '{1}' -e '{2}' -w '{3}'".format(
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in_file, out_file, err_file, self.get_process_working_directory())
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if lldb.remote_platform:
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self.runCmd('platform put-file "{local}" "{remote}"'.format(
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local=in_file, remote=in_file))
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self.expect(launch_command,
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patterns=["Process .* launched: .*a.out"])
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success = True
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err_msg = ""
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out = lldbutil.read_file_on_target(self, out_file)
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if out != "This should go to stdout.\n":
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success = False
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err_msg = err_msg + " ERROR: stdout file does not contain correct output.\n"
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err = lldbutil.read_file_on_target(self, err_file)
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if err != "This should go to stderr.\n":
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success = False
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err_msg = err_msg + " ERROR: stderr file does not contain correct output.\n"
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if not success:
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self.fail(err_msg)
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# rdar://problem/9056462
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# The process launch flag '-w' for setting the current working directory
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# not working?
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@skipIfRemote
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@expectedFailureAll(oslist=["freebsd", "linux"], bugnumber="llvm.org/pr20265")
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@expectedFailureNetBSD
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@skipIfReproducer
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def test_set_working_dir_nonexisting(self):
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"""Test that '-w dir' fails to set the working dir when running the inferior with a dir which doesn't exist."""
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d = {'CXX_SOURCES': 'print_cwd.cpp'}
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self.build(dictionary=d)
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self.setTearDownCleanup(d)
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe)
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mywd = 'my_working_dir'
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out_file_name = "my_working_dir_test.out"
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err_file_name = "my_working_dir_test.err"
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my_working_dir_path = self.getBuildArtifact(mywd)
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out_file_path = os.path.join(my_working_dir_path, out_file_name)
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err_file_path = os.path.join(my_working_dir_path, err_file_name)
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# Check that we get an error when we have a nonexisting path
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invalid_dir_path = mywd + 'z'
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launch_command = "process launch -w %s -o %s -e %s" % (
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invalid_dir_path, out_file_path, err_file_path)
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self.expect(
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launch_command, error=True, patterns=[
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"error:.* No such file or directory: %s" %
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invalid_dir_path])
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@skipIfRemote
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@skipIfReproducer
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def test_set_working_dir_existing(self):
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"""Test that '-w dir' sets the working dir when running the inferior."""
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d = {'CXX_SOURCES': 'print_cwd.cpp'}
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self.build(dictionary=d)
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self.setTearDownCleanup(d)
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe)
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mywd = 'my_working_dir'
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out_file_name = "my_working_dir_test.out"
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err_file_name = "my_working_dir_test.err"
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my_working_dir_path = self.getBuildArtifact(mywd)
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lldbutil.mkdir_p(my_working_dir_path)
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out_file_path = os.path.join(my_working_dir_path, out_file_name)
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err_file_path = os.path.join(my_working_dir_path, err_file_name)
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# Make sure the output files do not exist before launching the process
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try:
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os.remove(out_file_path)
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os.remove(err_file_path)
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except OSError:
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pass
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launch_command = "process launch -w %s -o %s -e %s" % (
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my_working_dir_path, out_file_path, err_file_path)
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self.expect(launch_command,
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patterns=["Process .* launched: .*a.out"])
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success = True
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err_msg = ""
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# Check to see if the 'stdout' file was created
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try:
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out_f = open(out_file_path)
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except IOError:
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success = False
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err_msg = err_msg + "ERROR: stdout file was not created.\n"
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else:
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# Check to see if the 'stdout' file contains the right output
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line = out_f.readline()
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if self.TraceOn():
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print("line:", line)
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if not re.search(mywd, line):
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success = False
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err_msg = err_msg + "The current working directory was not set correctly.\n"
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out_f.close()
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# Try to delete the 'stdout' and 'stderr' files
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try:
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os.remove(out_file_path)
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os.remove(err_file_path)
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except OSError:
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pass
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if not success:
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self.fail(err_msg)
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@skipIfReproducer
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def test_environment_with_special_char(self):
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"""Test that environment variables containing '*' and '}' are handled correctly by the inferior."""
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source = 'print_env.cpp'
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d = {'CXX_SOURCES': source}
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self.build(dictionary=d)
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self.setTearDownCleanup(d)
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evil_var = 'INIT*MIDDLE}TAIL'
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target = self.createTestTarget()
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main_source_spec = lldb.SBFileSpec(source)
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breakpoint = target.BreakpointCreateBySourceRegex(
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'// Set breakpoint here.', main_source_spec)
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process = target.LaunchSimple(None,
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['EVIL=' + evil_var],
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self.get_process_working_directory())
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self.assertEqual(
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process.GetState(),
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lldb.eStateStopped,
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PROCESS_STOPPED)
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threads = lldbutil.get_threads_stopped_at_breakpoint(
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process, breakpoint)
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self.assertEqual(len(threads), 1)
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frame = threads[0].GetFrameAtIndex(0)
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sbvalue = frame.EvaluateExpression("evil")
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value = sbvalue.GetSummary().strip('"')
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self.assertEqual(value, evil_var)
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process.Continue()
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self.assertEqual(process.GetState(), lldb.eStateExited, PROCESS_EXITED)
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