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95c453a221
For convenience, we had added the folder that dotest.py was in to sys.path, so that we could easily write things like `import lldbutil` from anywhere and any test. This introduces a subtle problem when using Python's package system, because when unittest2 imports a particular test suite, the test suite is detached from the package. Thus, writing "import lldbutil" from dotest imports it as part of the package, and writing the same line from a test does a fresh import since the importing module was not part of the same package. The real way to fix this is to use absolute imports everywhere. Instead of writing "import lldbutil", we need to write "import lldbsuite.test.util". This patch fixes up that and all other similar cases, and additionally removes the script directory from sys.path to ensure that this can't happen again. llvm-svn: 251886
88 lines
3.2 KiB
Python
88 lines
3.2 KiB
Python
"""
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Test C++ virtual function and virtual inheritance.
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"""
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from __future__ import print_function
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import os, time
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import re
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import lldb
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from lldbsuite.test.lldbtest import *
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import lldbsuite.test.lldbutil as lldbutil
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def Msg(expr, val):
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return "'expression %s' matches the output (from compiled code): %s" % (expr, val)
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class CppVirtualMadness(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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# This is the pattern by design to match the "my_expr = 'value'" output from
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# printf() stmts (see main.cpp).
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pattern = re.compile("^([^=]*) = '([^=]*)'$")
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# Assert message.
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PRINTF_OUTPUT_GROKKED = "The printf output from compiled code is parsed correctly"
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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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# Find the line number to break for main.cpp.
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self.source = 'main.cpp'
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self.line = line_number(self.source, '// Set first breakpoint here.')
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@expectedFailureIcc('llvm.org/pr16808') # lldb does not call the correct virtual function with icc
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def test_virtual_madness(self):
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"""Test that expression works correctly with virtual inheritance as well as virtual function."""
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self.build()
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# Bring the program to the point where we can issue a series of
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# 'expression' command to compare against the golden output.
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self.dbg.SetAsync(False)
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# Create a target by the debugger.
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target = self.dbg.CreateTarget("a.out")
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self.assertTrue(target, VALID_TARGET)
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# Create the breakpoint inside function 'main'.
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breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
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self.assertTrue(breakpoint, VALID_BREAKPOINT)
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# Now launch the process, and do not stop at entry point.
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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self.assertTrue(process, PROCESS_IS_VALID)
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self.assertTrue(process.GetState() == lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
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self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
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# First, capture the golden output from the program itself from the
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# series of printf statements.
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stdout = process.GetSTDOUT(1024)
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# This golden list contains a list of "my_expr = 'value' pairs extracted
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# from the golden output.
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gl = []
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# Scan the golden output line by line, looking for the pattern:
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#
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# my_expr = 'value'
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#
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for line in stdout.split(os.linesep):
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match = self.pattern.search(line)
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if match:
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my_expr, val = match.group(1), match.group(2)
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gl.append((my_expr, val))
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#print("golden list:", gl)
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# Now iterate through the golden list, comparing against the output from
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# 'expression var'.
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for my_expr, val in gl:
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self.runCmd("expression %s" % my_expr)
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output = self.res.GetOutput()
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# The expression output must match the oracle.
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self.expect(output, Msg(my_expr, val), exe=False,
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substrs = [val])
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