| """ |
| Abstract base class of basic types provides a generic type tester method. |
| """ |
| |
| import os, time |
| import re |
| import lldb |
| from lldbtest import * |
| |
| def Msg(var, val, using_frame_variable): |
| return "'%s %s' matches the output (from compiled code): %s" % ( |
| 'frame variable -t' if using_frame_variable else 'expression' ,var, val) |
| |
| class GenericTester(TestBase): |
| |
| # This is the pattern by design to match the " var = 'value'" output from |
| # printf() stmts (see basic_type.cpp). |
| pattern = re.compile(" (\*?a[^=]*) = '([^=]*)'$") |
| |
| # Assert message. |
| DATA_TYPE_GROKKED = "Data type from expr parser output is parsed correctly" |
| |
| def generic_type_tester(self, atoms, quotedDisplay=False): |
| """Test that variables with basic types are displayed correctly.""" |
| |
| # First, capture the golden output emitted by the oracle, i.e., the |
| # series of printf statements. |
| go = system("./a.out", sender=self) |
| # This golden list contains a list of (variable, value) pairs extracted |
| # from the golden output. |
| gl = [] |
| |
| # Scan the golden output line by line, looking for the pattern: |
| # |
| # variable = 'value' |
| # |
| for line in go.split(os.linesep): |
| match = self.pattern.search(line) |
| if match: |
| var, val = match.group(1), match.group(2) |
| gl.append((var, val)) |
| #print "golden list:", gl |
| |
| # Bring the program to the point where we can issue a series of |
| # 'frame variable -t' command. |
| self.runCmd("file a.out", CURRENT_EXECUTABLE_SET) |
| self.runCmd("breakpoint set --name Puts") |
| self.runCmd("run", RUN_SUCCEEDED) |
| self.runCmd("thread step-out", STEP_OUT_SUCCEEDED) |
| |
| #self.runCmd("frame variable -t") |
| |
| # Now iterate through the golden list, comparing against the output from |
| # 'frame variable -t var'. |
| for var, val in gl: |
| self.runCmd("frame variable -t %s" % var) |
| output = self.res.GetOutput() |
| |
| # The input type is in a canonical form as a set of named atoms. |
| # The display type string must conatin each and every element. |
| # |
| # Example: |
| # runCmd: frame variable -t a_array_bounded[0] |
| # output: (char) a_array_bounded[0] = 'a' |
| # |
| try: |
| dt = re.match("^\((.*)\)", output).group(1) |
| except: |
| self.fail(self.DATA_TYPE_GROKKED) |
| |
| # Expect the display type string to contain each and every atoms. |
| self.expect(dt, |
| "Display type: '%s' must contain the type atoms: '%s'" % |
| (dt, atoms), |
| exe=False, |
| substrs = list(atoms)) |
| |
| # The (var, val) pair must match, too. |
| nv = ("%s = '%s'" if quotedDisplay else "%s = %s") % (var, val) |
| self.expect(output, Msg(var, val, True), exe=False, |
| substrs = [nv]) |
| |
| def generic_type_expr_tester(self, atoms, quotedDisplay=False): |
| """Test that variable expressions with basic types are evaluated correctly.""" |
| |
| # First, capture the golden output emitted by the oracle, i.e., the |
| # series of printf statements. |
| go = system("./a.out", sender=self) |
| # This golden list contains a list of (variable, value) pairs extracted |
| # from the golden output. |
| gl = [] |
| |
| # Scan the golden output line by line, looking for the pattern: |
| # |
| # variable = 'value' |
| # |
| for line in go.split(os.linesep): |
| match = self.pattern.search(line) |
| if match: |
| var, val = match.group(1), match.group(2) |
| gl.append((var, val)) |
| #print "golden list:", gl |
| |
| # Bring the program to the point where we can issue a series of |
| # 'expr' command. |
| self.runCmd("file a.out", CURRENT_EXECUTABLE_SET) |
| self.runCmd("breakpoint set --name Puts") |
| self.runCmd("run", RUN_SUCCEEDED) |
| self.runCmd("thread step-out", STEP_OUT_SUCCEEDED) |
| |
| #self.runCmd("frame variable -t") |
| |
| # Now iterate through the golden list, comparing against the output from |
| # 'expr var'. |
| for var, val in gl: |
| # Don't overwhelm the expression mechanism. |
| time.sleep(1.0) |
| self.runCmd("expression %s" % var) |
| output = self.res.GetOutput() |
| |
| # The input type is in a canonical form as a set named atoms. |
| # The display type string must conatin each and every element. |
| # |
| # Example: |
| # runCmd: expr a |
| # output: (double) $0 = 1100.12 |
| # |
| try: |
| dt = re.match("^\((.*)\) \$[0-9]+ = ", output).group(1) |
| except: |
| self.fail(self.DATA_TYPE_GROKKED) |
| |
| # Expect the display type string to contain each and every atoms. |
| self.expect(dt, |
| "Display type: '%s' must contain the type atoms: '%s'" % |
| (dt, atoms), |
| exe=False, |
| substrs = list(atoms)) |
| |
| # The val part must match, too. |
| valPart = ("'%s'" if quotedDisplay else "%s") % val |
| self.expect(output, Msg(var, val, False), exe=False, |
| substrs = [valPart]) |