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lts/deps/v8/tools/testrunner/testproc/fuzzer.py

Summary

Maintainability
F
1 wk
Test Coverage

Function _create_gen has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.
Open

  def _create_gen(self, test, analysis_result=None):
    # It will be called with analysis_result==None only when there is no
    # analysis phase at all, so no fuzzer has it's own analyzer.
    gens = []
    indexes = []
Severity: Minor
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py - About 2 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _result_for has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

  def _result_for(self, test, subtest, result):
    if not self._disable_analysis:
      if result is not None:
        # Analysis phase, for fuzzing we drop the result.
        if result.has_unexpected_output:
Severity: Minor
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _try_send_next_test has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

  def _try_send_next_test(self, test):
    if not self.is_stopped:
      for subtest in self._gens[test.procid]:
        if self._send_test(subtest):
          return True
Severity: Minor
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function do_analysis has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

  def do_analysis(self, result):
    for line in reversed(result.output.stdout.splitlines()):
      if line.startswith('=== Stress deopt counter: '):
        counter = self.MAX_DEOPT - int(line.split(' ')[-1])
        if counter < self._min:
Severity: Minor
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

class DeoptAnalyzer(Analyzer):
  MAX_DEOPT=1000000000

  def __init__(self, min_interval):
    super(DeoptAnalyzer, self).__init__()
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 1 day to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 278..297

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 137.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

    for i, fuzzer_config in enumerate(self._fuzzer_configs):
      analysis_value = None
      if analysis_result and fuzzer_config.analyzer:
        analysis_value = fuzzer_config.analyzer.do_analysis(analysis_result)
        if not analysis_value:
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 5 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 158..169

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 94.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

  def _create_analysis_subtest(self, test):
    if self._disable_analysis:
      return None

    analysis_flags = []
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 4 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 127..138

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 82.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

  def _result_for(self, test, subtest, result):
    if not self._disable_analysis:
      if result is not None:
        # Analysis phase, for fuzzing we drop the result.
        if result.has_unexpected_output:
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 4 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 141..151

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 77.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

class GcIntervalAnalyzer(Analyzer):
  def get_analysis_flags(self):
    return ['--fuzzer-gc-analysis']

  def do_analysis(self, result):
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 4 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 240..247

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 77.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

class ScavengeAnalyzer(Analyzer):
  def get_analysis_flags(self):
    return ['--fuzzer-gc-analysis']

  def do_analysis(self, result):
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 3 other locations - About 3 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 208..215
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 224..231
lts/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 179..186

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 71.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

class MarkingAnalyzer(Analyzer):
  def get_analysis_flags(self):
    return ['--fuzzer-gc-analysis']

  def do_analysis(self, result):
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 3 other locations - About 3 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 208..215
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 224..231
lts/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 163..170

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 71.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

  def _next_test(self, test):
    if self.is_stopped:
      return False

    analysis_subtest = self._create_analysis_subtest(test)
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 3 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 116..125

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 70.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

  def __init__(self, rng, count, fuzzers, disable_analysis=False):
    """
    Args:
      rng: random number generator used to select flags and values for them
      count: number of tests to generate based on each base test
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 3 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 94..109

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 64.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

  def _try_send_next_test(self, test):
    if not self.is_stopped:
      for subtest in self._gens[test.procid]:
        if self._send_test(subtest):
          return True
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 3 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 192..199

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 62.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

      for index, (p, gen) in enumerate(gens):
        if index == main_index:
          continue
        if self._rng.randint(1, 10) <= p:
          flags += next(gen)
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 2 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 181..185

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 57.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

class FuzzerConfig(object):
  def __init__(self, probability, analyzer, fuzzer):
    """
    Args:
      probability: of choosing this fuzzer (0; 10]
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 2 hrs to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 57..69

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 57.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

def create_fuzzer_config(name, probability, *args, **kwargs):
  analyzer_class, fuzzer_class = FUZZERS[name]
  return FuzzerConfig(
      probability,
      analyzer_class(*args, **kwargs) if analyzer_class else None,
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 1 hr to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 326..331

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 48.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

FUZZERS = {
  'compaction': (None, CompactionFuzzer),
  'delay': (None, TaskDelayFuzzer),
  'deopt': (DeoptAnalyzer, DeoptFuzzer),
  'gc_interval': (GcIntervalAnalyzer, GcIntervalFuzzer),
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 1 hr to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 315..322

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 42.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

class ThreadPoolSizeFuzzer(Fuzzer):
  def create_flags_generator(self, rng, test, analysis_value):
    while True:
      yield ['--thread-pool-size=%d' % rng.randint(1, 8)]
Severity: Minor
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 55 mins to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 272..275

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 37.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

  def setup(self, requirement=base.DROP_RESULT):
    # Fuzzer is optimized to not store the results
    assert requirement == base.DROP_RESULT
    super(FuzzerProc, self).setup(requirement)
Severity: Minor
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 50 mins to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 111..114

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 36.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

  def _next_seed(self):
    seed = None
    while not seed:
      seed = self._rng.randint(-2147483648, 2147483647)
    return seed
Severity: Minor
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 1 other location - About 50 mins to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 201..205

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 36.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

class ScavengeFuzzer(Fuzzer):
  def create_flags_generator(self, rng, test, analysis_value):
    while True:
      yield ['--stress-scavenge=%d' % (analysis_value or 100)]
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 3 other locations - About 45 mins to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 218..221
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 234..237
lts/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 189..192

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 35.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

class MarkingFuzzer(Fuzzer):
  def create_flags_generator(self, rng, test, analysis_value):
    while True:
      yield ['--stress-marking=%d' % (analysis_value or 100)]
Severity: Major
Found in lts/deps/v8/tools/testrunner/testproc/fuzzer.py and 3 other locations - About 45 mins to fix
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 218..221
current/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 234..237
lts/deps/v8/tools/testrunner/testproc/fuzzer.py on lines 173..176

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 35.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

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