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study the optimal configuration of amplifiers #777

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monperrus opened this issue Apr 30, 2019 · 13 comments
Open

study the optimal configuration of amplifiers #777

monperrus opened this issue Apr 30, 2019 · 13 comments
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@zemingd

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@monperrus
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We should have a default optimal configuration of amplifiers, and maybe a set of 2/3 alternative ones.

Zeming Dong will work on this.
@zemingd
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zemingd commented Jun 7, 2019 •
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A represents the I-Amplification; P represents the Project.

P1=javapoet; P2=mybatis-3; P3=traccar; P4=stream-lib; P5=mustache.java;
P6=twilio-java; P7=jsoup; P8=protostuff; P9=logback; P10=retrofit.

Figure in brackets denotes the Incresae Killed.

  • A1=MethodAdd [Average Score (1.08%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-322-0.3%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.2%): AttributeTest (330-332-0.6%), CharacterReaderTest (359-359-0.0%), TokenQueueTest (362-362-0.0%), AttributesTest (330-331-0.3%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-345-0.0%), CodedDataInputTest(345-345-0.0%), CodedInputTest(345-349-1.2%)
    P10 (0.0%): CallTest (125-125-0.0%), RequestBuilderAndroidTest,(125-125-0.0%), CallAdapterTest (125-125-0.0%), ExecutorCallAdapterFactoryTest (124-124-0.0%)

  • A2=MethodRemove [Average Score (1.10%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-322-0.3%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.16%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-561-0.2%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.15%): AttributeTest(330-331-0.3%), CharacterReaderTest (359-359-0.0%), TokenQueueTest (359-359-0.0%), AttributesTest (330-331-0.3%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-345-0.0%), CodedDataInputTest(345-345-0.0%), CodedInputTest(345-349-1.2%)
    P10 (0.0%)

  • A3=TestDataMutator [Average Score (1.12%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-322-0.3%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.38%): AttributeTest(330-334-1.2%), CharacterReaderTest (361-361-0.0%), TokenQueueTest (361-361-0.0%), AttributesTest (330-331-0.3%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-345-0.0%), CodedInputTest(345-349-1.2%)
    P10 (0.0%)

  • A4=MethodGeneratorAmplifier [Average Score (1.28%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-325-1.2%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (1.20%): AttributeTest(330-340-3.0%), CharacterReaderTest (359-359-0.0%), TokenQueueTest (359-360-0.3%), AttributesTest (330-335-1.5%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-350-1.4%), CodedDataInputTest(345-345-0.0%), CodedInputTest(345-359-4.1%)
    P10 (0.0%)

  • A5=ReturnValueAmplifier [Average Score (1.15%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-323-0.6%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.53%): AttributeTest(330-334-1.2%), CharacterReaderTest (359-359-0.0%), TokenQueueTest (359-359-0.0%), AttributesTest (330-333-0.9%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-350-1.4%), CodedDataInputTest(345-345-0.0%), CodedInputTest(345-347-0.6%)
    P10 (0.0%)

  • A6=StringLiteralAmplifier [Average Score (1.09%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-322-0.3%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.23%): AttributeTest(330-332-0.6%), CharacterReaderTest (359-359-0.0%), TokenQueueTest (359-359-0.0%), AttributesTest (330-331-0.3%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-345-0.0%), CodedInputTest(345-347-0.6%)
    P10 (0.0%)

  • A7=NumberLiteralAmplifier [Average Score (1.09%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-322-0.3%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.23%): AttributeTest(330-332-0.6%), CharacterReaderTest (359-359-0.0%), TokenQueueTest (359-359-0.0%), AttributesTest (330-331-0.3%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-345-0.0%), CodedInputTest(345-350-1.4%)
    P10 (0.0%)

  • A8=BooleanLiteralAmplifier [Average Score (1.07%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-322-0.3%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.15%): AttributeTest(330-331-0.3%), CharacterReaderTest (359-359-0.0%), TokenQueueTest (361-361-0.0%), AttributesTest (330-331-0.3%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-345-0.0%), CodedInputTest(345-347-0.6%)
    P10 (0.0%)

  • A9=CharLiteralAmplifier [Average Score (1.07%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-322-0.3%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.15%): AttributeTest(329-330-0.3%), CharacterReaderTest (361-361-0.0%), TokenQueueTest (359-359-0.0%), AttributesTest (329-330-0.3%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-345-0.0%), CodedInputTest(345-347-0.6%)
    P10 (0.0%)

  • A10=AllLiteralAmplifiers[Average Score (1.09%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%), TypeNameTest (321-322-0.3%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (135-135-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.23%): AttributeTest(330-332-0.6%), CharacterReaderTest (361-361-0.0%), TokenQueueTest (359-359-0.0%), AttributesTest (330-331-0.3%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-345-0.0%), CodedInputTest(345-350-1.4%)
    P10 (0.0%): CallTest (125-125-0.0%), RequestBuilderAndroidTest,(125-125-0.0%), CallAdapterTest (125-125-0.0%), ExecutorCallAdapterFactoryTest (124-124-0.0%)

  • A11=NullifierAmplifier [Average Score (1.07%) ]
    P1 (0.0%): FieldSpaceTest (322-322-0.0%), NameAllocatorTest (322-322-0.0%), ParameterSpecTest (322-322-0.0%),, TypeNameTest (321-322-0.3%)
    P2 (0.0%): MetaClassTest (105-107-1.9%)
    P3 (0.0%): ObdDecoderTest (58-58-0%), At2000ProtocolDecoderTest (560-560-0%), MiscFormatterTest(7-7-0%)
    P4 (0.0%): TestMurmurHash (20-20-0.0%), TestDoublyLinkedList (16-16-0.0%), TestLookup3Hash (20-20-0.0%), TestICardinality (134-134-0.0%)
    P6 (5.2%): RequestTest (21-26-23.8%), PrefixedCollapsibleMapTest(12-12-0.0%), AllTimeTest(32-32-0.0%), DailyTest (32-32-0.0%)
    P7 (0.15%): AttributeTest(330-331-0.3%), CharacterReaderTest (360-360-0.0%), TokenQueueTest (359-359-0.0%), AttributesTest (330-331-0.3%)
    P8 (0.%): TailDelimiterTest(345-345-0.0%), LinkBufferTest(345-345-0.0%), CodedInputTest(345-347-0.6%)
    P10 (0.0%)

@zemingd
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zemingd commented Jul 9, 2019 •
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Classify amplifier methods into

  1. Method calls: MethodAdd, MethodRemove, MethodGeneratorAmplifier
  2. Literals: StringLiteralAmplifier, NumberLiteralAmplifier, BooleanLiteralAmplifier, CharLiteralAmplifier, AllLiteralAmplifiers, TestDataMutator
  3. Test objects: ReturnValueAmplifier, NullifierAmplifier

Jsoup.AttributeTest

  • Auto-correlation

  1. Method calls：
    MethodAdd+MethodRemove, (330-332-0.6%)
    MethodAdd+MethodGenerator, (330-341-3.3%)
    MethodRemove+MethodGenerator(330-342-3.6%),
    MethodAdd+MethodRemove+MethodGenerator（330-339-2.7%）

  2. Literals：
    StringLiteralAmplifier+NumberLiteralAmplifier（330-332-0.6%）
    StringLiteralAmplifier+BooleanLiteralAmplifier（330-332-0.6%）
    StringLiteralAmplifier+CharLiteralAmplifier（330-332-0.6%）
    NumberLiteralAmplifier+BooleanLiteralAmplifier（330-331-0.3%）
    NumberLiteralAmplifier+CharLiteralAmplifier（330-332-0.6%）
    BooleanLiteralAmplifier+CharLiteralAmplifier（330-331-0.3%）
    StringLiteralAmplifier+NumberLiteralAmplifier+BooleanLiteralAmplifier（330-332-0.6%）
    StringLiteralAmplifier+NumberLiteralAmplifier+CharLiteralAmplifier（330-332-0.6%）
    NumberLiteralAmplifier+BooleanLiteralAmplifier+CharLiteralAmplifier (330-331-0.3%)
    StringLiteralAmplifier+BooleanLiteralAmplifier+CharLiteralAmplifier (330-332-0.6%)
    TestDataMutator+StringLiteralAmplifier+NumberLiteralAmplifier（330-333-0.9%）
    TestDataMutator+StringLiteralAmplifier+BooleanLiteralAmplifier（330-333-0.9%）
    TestDataMutator+StringLiteralAmplifier+CharLiteralAmplifier（330-333-0.9%）
    TestDataMutator+NumberLiteralAmplifier+BooleanLiteralAmplifier（330-333-0.9%）
    TestDataMutator+NumberLiteralAmplifier+CharLiteralAmplifier（330-333-0.9%）
    TestDataMutator+BooleanLiteralAmplifier+CharLiteralAmplifier（330-333-0.9%）
    TestDataMutator+StringLiteralAmplifier+NumberLiteralAmplifier+BooleanLiteralAmplifier（330-333-0.9%）
    TestDataMutator+StringLiteralAmplifier+NumberLiteralAmplifier+CharLiteralAmplifier（330-333-0.9%）
    TestDataMutator+NumberLiteralAmplifier+BooleanLiteralAmplifier+CharLiteralAmplifier（330-333-0.9%）
    TestDataMutator+StringLiteralAmplifier+BooleanLiteralAmplifier+CharLiteralAmplifier（330-333-0.9%）
    TestDataMutator+AllLiteralAmplifiers（330-333-0.9%）
    TestDataMutator+StringLiteralAmplifier（330-333-0.9%）
    TestDataMutator+NumberLiteralAmplifier（330-333-0.9%）
    TestDataMutator+BooleanLiteralAmplifier（330-333-0.9%）
    TestDataMutator+CharLiteralAmplifier（330-333-0.9%）

  3. Test objects：
    ReturnValueAmplifier+NullifierAmplifier（330-331-0.3%）

  • Cross-correlation

  1. Method calls+Literals
    TestDataMutator+MethodAdd+MethodRemove（330-333-0.9%）
    TestDataMutator+MethodAdd+MethodGenerator（330-333-0.9%）
    TestDataMutator+MethodRemove+MethodGenerator（330-333-0.9%）
    TestDataMutator+MethodAdd+MethodRemove+MethodGenerator（330-334-1.2%）
    AllLiteralAmplifiers+MethodAdd+MethodRemove（330-333-0.9%）
    AllLiteralAmplifiers+MethodAdd+MethodGenerator（330-333-0.9%）
    AllLiteralAmplifiers+MethodRemove+MethodGenerator（330-333-0.9%）
    AllLiteralAmplifiers+MethodAdd+MethodRemove+MethodGenerator（330-334-1.2%）
    MethodGenerator+NumberLiteralAmplifier（330-331-0.3%）
    MethodGenerator+StringLiteralAmplifier（330-332-0.6%）
    MethodGenerator+BooleanLiteralAmplifier（330-331-0.3%）
    MethodGenerator+CharLiteralAmplifier（330-331-0.3%）

  2. Method calls+Test objects
    MethodRemove+MethodGenerator+ReturnValueAmplifier+NullifierAmplifier（330-331-0.3%）
    MethodRemove+MethodGenerator+ReturnValueAmplifier（330-331-0.3%）
    MethodRemove+MethodGenerator+NullifierAmplifier（330-331-0.3%）
    MethodGenerator+ReturnValueAmplifier（330-331-0.3%）
    MethodRemove+ReturnValueAmplifier（330-331-0.3%）
    MethodGenerator+NullifierAmplifier（330-331-0.3%）
    MethodRemove+NullifierAmplifier（330-331-0.3%）

  3. Literals+Test objects
    AllLiteralAmplifiers+ReturnValueAmplifier+NullifierAmplifier（330-332-0.6%）
    AllLiteralAmplifiers+ReturnValueAmplifier（330-332-0.6%）
    AllLiteralAmplifiers+NullifierAmplifier（330-332-0.6%）
    TestDataMutator+ReturnValueAmplifier+NullifierAmplifier（330-333-0.9%）
    TestDataMutator+ReturnValueAmplifier（330-333-0.9%）
    TestDataMutator+NullifierAmplifier（330-333-0.9%）

  4. Method calls+Literals+Test objects
    MethodRemove+MethodGenerator+TestDataMutator+ReturnValueAmplifier（330-333-0.9%）
    MethodRemove+MethodGenerator+TestDataMutator+NullifierAmplifier（330-333-0.9%）
    MethodRemove+TestDataMutator+ReturnValueAmplifier（330-333-0.9%）
    MethodRemove+TestDataMutator+NullifierAmplifier（330-333-0.9%）
    TestDataMutator+MethodAdd+MethodRemove+MethodGenerator+ReturnValueAmplifier（330-334-1.2%）
    TestDataMutator+MethodAdd+MethodRemove+MethodGenerator+NullifierAmplifier（330-334-1.2%）
    TestDataMutator+MethodAdd+MethodRemove+MethodGenerator+NullifierAmplifier+ReturnValueAmplifier (330-333-0.9%)

@monperrus
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Could you add the absolute numbers, eg before:100 killed, after 110 killed (100-110-10%)?

@monperrus
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monperrus commented Jul 9, 2019 •
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We have 11 configurations, so we will have the results for:

  • 11 single amplifier runs
  • 11*11 double amplifier runs
  • 11*11*11 double amplifier runs
  • etc.
  • (note that AllLiteralAmplifiers is already a combination by default)

@danglotb
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danglotb commented Jul 9, 2019

Hello,

TestDataMutator is the old implementation of AllLiteralAmplifiers, so it should be in the category Literals, right?

Thank you.

@monperrus
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Hi Benjamin,
Do you mean that TestDataMutatoris legacy code that can be discarded? even removed from the code base?

@monperrus
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@deeplus
Auto-correlation: do you mean within-group combination, eg all amplifiers coming from the same group?
Cross-correlation: do you mean inter-group combination, eg at least two amplifiers coming from the same group?

@danglotb
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danglotb commented Jul 9, 2019

The fact is that since TestDataMutator is less stronger, i.e. it generates less amplified test methods at each iteration, it allows DSpot to obtain better result because good amplified test methods are not discarded. (You know that when we have a lot of amplified test methods, we discard a part of them to have a reasonable number of amplified test methods to pursue the amplification)

So it happens, that you can obtain better result using TestDataMutator instead of AllLiteralAmplifiers.

This why I kept it in DSpot.

This is an open question: according to our resources, how much can we explore?

It would be awesome to fine-tune the input amplification, at the level of the amplifier, in order to not exceed this arbitrary number of test methods and not waste any resource.

@monperrus
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I see. What about renaming TestDataMutator? for instance into FastLiteralAmplifier?

@monperrus
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according to our resources, how much can we explore?

That's indeed one of the hardest questions that @deeplus is answering.

@zemingd
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zemingd commented Jul 9, 2019

Hi all,

  1. @monperrus Auto-correlation means within-group combination; Cross-correlation means inter-group combination.

  2. @danglotb ReturnValueAmplifier and NullifierAmplifier belong to the category Test objects, is this right?

@monperrus
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@danglotb What about renaming TestDataMutator whose name is confusing? for instance into FastLiteralAmplifier? Another idea?

@danglotb
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Hi, @deeplus Yeah this is the correct category.

@monperrus okay to modify the name of the amplifier TestDataMutator to FastLiteralAmplifier

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