diff options
author | cinap_lenrek <cinap_lenrek@localhost> | 2011-05-04 05:41:33 +0000 |
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committer | cinap_lenrek <cinap_lenrek@localhost> | 2011-05-04 05:41:33 +0000 |
commit | b8436b026a90291ba26afa4f7a2700720b03339f (patch) | |
tree | 3098aede87640c80567ecb31022e0404a8b5ec75 /sys/lib/python/test/test_trace.py | |
parent | 6c1b42188259a6f1636cd15a9570b18af03e2dbb (diff) |
remove python test cases
Diffstat (limited to 'sys/lib/python/test/test_trace.py')
-rw-r--r-- | sys/lib/python/test/test_trace.py | 626 |
1 files changed, 0 insertions, 626 deletions
diff --git a/sys/lib/python/test/test_trace.py b/sys/lib/python/test/test_trace.py deleted file mode 100644 index 08aec8e83..000000000 --- a/sys/lib/python/test/test_trace.py +++ /dev/null @@ -1,626 +0,0 @@ -# Testing the line trace facility. - -from test import test_support -import unittest -import sys -import difflib - -# A very basic example. If this fails, we're in deep trouble. -def basic(): - return 1 - -basic.events = [(0, 'call'), - (1, 'line'), - (1, 'return')] - -# Many of the tests below are tricky because they involve pass statements. -# If there is implicit control flow around a pass statement (in an except -# clause or else caluse) under what conditions do you set a line number -# following that clause? - - -# The entire "while 0:" statement is optimized away. No code -# exists for it, so the line numbers skip directly from "del x" -# to "x = 1". -def arigo_example(): - x = 1 - del x - while 0: - pass - x = 1 - -arigo_example.events = [(0, 'call'), - (1, 'line'), - (2, 'line'), - (5, 'line'), - (5, 'return')] - -# check that lines consisting of just one instruction get traced: -def one_instr_line(): - x = 1 - del x - x = 1 - -one_instr_line.events = [(0, 'call'), - (1, 'line'), - (2, 'line'), - (3, 'line'), - (3, 'return')] - -def no_pop_tops(): # 0 - x = 1 # 1 - for a in range(2): # 2 - if a: # 3 - x = 1 # 4 - else: # 5 - x = 1 # 6 - -no_pop_tops.events = [(0, 'call'), - (1, 'line'), - (2, 'line'), - (3, 'line'), - (6, 'line'), - (2, 'line'), - (3, 'line'), - (4, 'line'), - (2, 'line'), - (2, 'return')] - -def no_pop_blocks(): - y = 1 - while not y: - bla - x = 1 - -no_pop_blocks.events = [(0, 'call'), - (1, 'line'), - (2, 'line'), - (4, 'line'), - (4, 'return')] - -def called(): # line -3 - x = 1 - -def call(): # line 0 - called() - -call.events = [(0, 'call'), - (1, 'line'), - (-3, 'call'), - (-2, 'line'), - (-2, 'return'), - (1, 'return')] - -def raises(): - raise Exception - -def test_raise(): - try: - raises() - except Exception, exc: - x = 1 - -test_raise.events = [(0, 'call'), - (1, 'line'), - (2, 'line'), - (-3, 'call'), - (-2, 'line'), - (-2, 'exception'), - (-2, 'return'), - (2, 'exception'), - (3, 'line'), - (4, 'line'), - (4, 'return')] - -def _settrace_and_return(tracefunc): - sys.settrace(tracefunc) - sys._getframe().f_back.f_trace = tracefunc -def settrace_and_return(tracefunc): - _settrace_and_return(tracefunc) - -settrace_and_return.events = [(1, 'return')] - -def _settrace_and_raise(tracefunc): - sys.settrace(tracefunc) - sys._getframe().f_back.f_trace = tracefunc - raise RuntimeError -def settrace_and_raise(tracefunc): - try: - _settrace_and_raise(tracefunc) - except RuntimeError, exc: - pass - -settrace_and_raise.events = [(2, 'exception'), - (3, 'line'), - (4, 'line'), - (4, 'return')] - -# implicit return example -# This test is interesting because of the else: pass -# part of the code. The code generate for the true -# part of the if contains a jump past the else branch. -# The compiler then generates an implicit "return None" -# Internally, the compiler visits the pass statement -# and stores its line number for use on the next instruction. -# The next instruction is the implicit return None. -def ireturn_example(): - a = 5 - b = 5 - if a == b: - b = a+1 - else: - pass - -ireturn_example.events = [(0, 'call'), - (1, 'line'), - (2, 'line'), - (3, 'line'), - (4, 'line'), - (6, 'line'), - (6, 'return')] - -# Tight loop with while(1) example (SF #765624) -def tightloop_example(): - items = range(0, 3) - try: - i = 0 - while 1: - b = items[i]; i+=1 - except IndexError: - pass - -tightloop_example.events = [(0, 'call'), - (1, 'line'), - (2, 'line'), - (3, 'line'), - (4, 'line'), - (5, 'line'), - (5, 'line'), - (5, 'line'), - (5, 'line'), - (5, 'exception'), - (6, 'line'), - (7, 'line'), - (7, 'return')] - -def tighterloop_example(): - items = range(1, 4) - try: - i = 0 - while 1: i = items[i] - except IndexError: - pass - -tighterloop_example.events = [(0, 'call'), - (1, 'line'), - (2, 'line'), - (3, 'line'), - (4, 'line'), - (4, 'line'), - (4, 'line'), - (4, 'line'), - (4, 'exception'), - (5, 'line'), - (6, 'line'), - (6, 'return')] - -class Tracer: - def __init__(self): - self.events = [] - def trace(self, frame, event, arg): - self.events.append((frame.f_lineno, event)) - return self.trace - -class TraceTestCase(unittest.TestCase): - def compare_events(self, line_offset, events, expected_events): - events = [(l - line_offset, e) for (l, e) in events] - if events != expected_events: - self.fail( - "events did not match expectation:\n" + - "\n".join(difflib.ndiff(map(str, expected_events), - map(str, events)))) - - - def run_test(self, func): - tracer = Tracer() - sys.settrace(tracer.trace) - func() - sys.settrace(None) - self.compare_events(func.func_code.co_firstlineno, - tracer.events, func.events) - - def run_test2(self, func): - tracer = Tracer() - func(tracer.trace) - sys.settrace(None) - self.compare_events(func.func_code.co_firstlineno, - tracer.events, func.events) - - def test_01_basic(self): - self.run_test(basic) - def test_02_arigo(self): - self.run_test(arigo_example) - def test_03_one_instr(self): - self.run_test(one_instr_line) - def test_04_no_pop_blocks(self): - self.run_test(no_pop_blocks) - def test_05_no_pop_tops(self): - self.run_test(no_pop_tops) - def test_06_call(self): - self.run_test(call) - def test_07_raise(self): - self.run_test(test_raise) - - def test_08_settrace_and_return(self): - self.run_test2(settrace_and_return) - def test_09_settrace_and_raise(self): - self.run_test2(settrace_and_raise) - def test_10_ireturn(self): - self.run_test(ireturn_example) - def test_11_tightloop(self): - self.run_test(tightloop_example) - def test_12_tighterloop(self): - self.run_test(tighterloop_example) - -class RaisingTraceFuncTestCase(unittest.TestCase): - def trace(self, frame, event, arg): - """A trace function that raises an exception in response to a - specific trace event.""" - if event == self.raiseOnEvent: - raise ValueError # just something that isn't RuntimeError - else: - return self.trace - - def f(self): - """The function to trace; raises an exception if that's the case - we're testing, so that the 'exception' trace event fires.""" - if self.raiseOnEvent == 'exception': - x = 0 - y = 1/x - else: - return 1 - - def run_test_for_event(self, event): - """Tests that an exception raised in response to the given event is - handled OK.""" - self.raiseOnEvent = event - try: - for i in xrange(sys.getrecursionlimit() + 1): - sys.settrace(self.trace) - try: - self.f() - except ValueError: - pass - else: - self.fail("exception not thrown!") - except RuntimeError: - self.fail("recursion counter not reset") - - # Test the handling of exceptions raised by each kind of trace event. - def test_call(self): - self.run_test_for_event('call') - def test_line(self): - self.run_test_for_event('line') - def test_return(self): - self.run_test_for_event('return') - def test_exception(self): - self.run_test_for_event('exception') - - def test_trash_stack(self): - def f(): - for i in range(5): - print i # line tracing will raise an exception at this line - - def g(frame, why, extra): - if (why == 'line' and - frame.f_lineno == f.func_code.co_firstlineno + 2): - raise RuntimeError, "i am crashing" - return g - - sys.settrace(g) - try: - f() - except RuntimeError: - # the test is really that this doesn't segfault: - import gc - gc.collect() - else: - self.fail("exception not propagated") - - -# 'Jump' tests: assigning to frame.f_lineno within a trace function -# moves the execution position - it's how debuggers implement a Jump -# command (aka. "Set next statement"). - -class JumpTracer: - """Defines a trace function that jumps from one place to another, - with the source and destination lines of the jump being defined by - the 'jump' property of the function under test.""" - - def __init__(self, function): - self.function = function - self.jumpFrom = function.jump[0] - self.jumpTo = function.jump[1] - self.done = False - - def trace(self, frame, event, arg): - if not self.done and frame.f_code == self.function.func_code: - firstLine = frame.f_code.co_firstlineno - if frame.f_lineno == firstLine + self.jumpFrom: - # Cope with non-integer self.jumpTo (because of - # no_jump_to_non_integers below). - try: - frame.f_lineno = firstLine + self.jumpTo - except TypeError: - frame.f_lineno = self.jumpTo - self.done = True - return self.trace - -# The first set of 'jump' tests are for things that are allowed: - -def jump_simple_forwards(output): - output.append(1) - output.append(2) - output.append(3) - -jump_simple_forwards.jump = (1, 3) -jump_simple_forwards.output = [3] - -def jump_simple_backwards(output): - output.append(1) - output.append(2) - -jump_simple_backwards.jump = (2, 1) -jump_simple_backwards.output = [1, 1, 2] - -def jump_out_of_block_forwards(output): - for i in 1, 2: - output.append(2) - for j in [3]: # Also tests jumping over a block - output.append(4) - output.append(5) - -jump_out_of_block_forwards.jump = (3, 5) -jump_out_of_block_forwards.output = [2, 5] - -def jump_out_of_block_backwards(output): - output.append(1) - for i in [1]: - output.append(3) - for j in [2]: # Also tests jumping over a block - output.append(5) - output.append(6) - output.append(7) - -jump_out_of_block_backwards.jump = (6, 1) -jump_out_of_block_backwards.output = [1, 3, 5, 1, 3, 5, 6, 7] - -def jump_to_codeless_line(output): - output.append(1) - # Jumping to this line should skip to the next one. - output.append(3) - -jump_to_codeless_line.jump = (1, 2) -jump_to_codeless_line.output = [3] - -def jump_to_same_line(output): - output.append(1) - output.append(2) - output.append(3) - -jump_to_same_line.jump = (2, 2) -jump_to_same_line.output = [1, 2, 3] - -# Tests jumping within a finally block, and over one. -def jump_in_nested_finally(output): - try: - output.append(2) - finally: - output.append(4) - try: - output.append(6) - finally: - output.append(8) - output.append(9) - -jump_in_nested_finally.jump = (4, 9) -jump_in_nested_finally.output = [2, 9] - -# The second set of 'jump' tests are for things that are not allowed: - -def no_jump_too_far_forwards(output): - try: - output.append(2) - output.append(3) - except ValueError, e: - output.append('after' in str(e)) - -no_jump_too_far_forwards.jump = (3, 6) -no_jump_too_far_forwards.output = [2, True] - -def no_jump_too_far_backwards(output): - try: - output.append(2) - output.append(3) - except ValueError, e: - output.append('before' in str(e)) - -no_jump_too_far_backwards.jump = (3, -1) -no_jump_too_far_backwards.output = [2, True] - -# Test each kind of 'except' line. -def no_jump_to_except_1(output): - try: - output.append(2) - except: - e = sys.exc_info()[1] - output.append('except' in str(e)) - -no_jump_to_except_1.jump = (2, 3) -no_jump_to_except_1.output = [True] - -def no_jump_to_except_2(output): - try: - output.append(2) - except ValueError: - e = sys.exc_info()[1] - output.append('except' in str(e)) - -no_jump_to_except_2.jump = (2, 3) -no_jump_to_except_2.output = [True] - -def no_jump_to_except_3(output): - try: - output.append(2) - except ValueError, e: - output.append('except' in str(e)) - -no_jump_to_except_3.jump = (2, 3) -no_jump_to_except_3.output = [True] - -def no_jump_to_except_4(output): - try: - output.append(2) - except (ValueError, RuntimeError), e: - output.append('except' in str(e)) - -no_jump_to_except_4.jump = (2, 3) -no_jump_to_except_4.output = [True] - -def no_jump_forwards_into_block(output): - try: - output.append(2) - for i in 1, 2: - output.append(4) - except ValueError, e: - output.append('into' in str(e)) - -no_jump_forwards_into_block.jump = (2, 4) -no_jump_forwards_into_block.output = [True] - -def no_jump_backwards_into_block(output): - try: - for i in 1, 2: - output.append(3) - output.append(4) - except ValueError, e: - output.append('into' in str(e)) - -no_jump_backwards_into_block.jump = (4, 3) -no_jump_backwards_into_block.output = [3, 3, True] - -def no_jump_into_finally_block(output): - try: - try: - output.append(3) - x = 1 - finally: - output.append(6) - except ValueError, e: - output.append('finally' in str(e)) - -no_jump_into_finally_block.jump = (4, 6) -no_jump_into_finally_block.output = [3, 6, True] # The 'finally' still runs - -def no_jump_out_of_finally_block(output): - try: - try: - output.append(3) - finally: - output.append(5) - output.append(6) - except ValueError, e: - output.append('finally' in str(e)) - -no_jump_out_of_finally_block.jump = (5, 1) -no_jump_out_of_finally_block.output = [3, True] - -# This verifies the line-numbers-must-be-integers rule. -def no_jump_to_non_integers(output): - try: - output.append(2) - except ValueError, e: - output.append('integer' in str(e)) - -no_jump_to_non_integers.jump = (2, "Spam") -no_jump_to_non_integers.output = [True] - -# This verifies that you can't set f_lineno via _getframe or similar -# trickery. -def no_jump_without_trace_function(): - try: - previous_frame = sys._getframe().f_back - previous_frame.f_lineno = previous_frame.f_lineno - except ValueError, e: - # This is the exception we wanted; make sure the error message - # talks about trace functions. - if 'trace' not in str(e): - raise - else: - # Something's wrong - the expected exception wasn't raised. - raise RuntimeError, "Trace-function-less jump failed to fail" - - -class JumpTestCase(unittest.TestCase): - def compare_jump_output(self, expected, received): - if received != expected: - self.fail( "Outputs don't match:\n" + - "Expected: " + repr(expected) + "\n" + - "Received: " + repr(received)) - - def run_test(self, func): - tracer = JumpTracer(func) - sys.settrace(tracer.trace) - output = [] - func(output) - sys.settrace(None) - self.compare_jump_output(func.output, output) - - def test_01_jump_simple_forwards(self): - self.run_test(jump_simple_forwards) - def test_02_jump_simple_backwards(self): - self.run_test(jump_simple_backwards) - def test_03_jump_out_of_block_forwards(self): - self.run_test(jump_out_of_block_forwards) - def test_04_jump_out_of_block_backwards(self): - self.run_test(jump_out_of_block_backwards) - def test_05_jump_to_codeless_line(self): - self.run_test(jump_to_codeless_line) - def test_06_jump_to_same_line(self): - self.run_test(jump_to_same_line) - def test_07_jump_in_nested_finally(self): - self.run_test(jump_in_nested_finally) - def test_08_no_jump_too_far_forwards(self): - self.run_test(no_jump_too_far_forwards) - def test_09_no_jump_too_far_backwards(self): - self.run_test(no_jump_too_far_backwards) - def test_10_no_jump_to_except_1(self): - self.run_test(no_jump_to_except_1) - def test_11_no_jump_to_except_2(self): - self.run_test(no_jump_to_except_2) - def test_12_no_jump_to_except_3(self): - self.run_test(no_jump_to_except_3) - def test_13_no_jump_to_except_4(self): - self.run_test(no_jump_to_except_4) - def test_14_no_jump_forwards_into_block(self): - self.run_test(no_jump_forwards_into_block) - def test_15_no_jump_backwards_into_block(self): - self.run_test(no_jump_backwards_into_block) - def test_16_no_jump_into_finally_block(self): - self.run_test(no_jump_into_finally_block) - def test_17_no_jump_out_of_finally_block(self): - self.run_test(no_jump_out_of_finally_block) - def test_18_no_jump_to_non_integers(self): - self.run_test(no_jump_to_non_integers) - def test_19_no_jump_without_trace_function(self): - no_jump_without_trace_function() - -def test_main(): - test_support.run_unittest( - TraceTestCase, - RaisingTraceFuncTestCase, - JumpTestCase - ) - -if __name__ == "__main__": - test_main() |