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Use regex for generating string when regex pattern is found #778 #793
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778_Use_regex_for_generating_string_when_regex_pattern_is_found
Aug 26, 2022
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12 changes: 12 additions & 0 deletions
12
utbot-fuzzers/src/main/kotlin/org/utbot/fuzzer/FuzzedConcreteValue.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| package org.utbot.fuzzer | ||
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| import org.utbot.framework.plugin.api.ClassId | ||
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|
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| /** | ||
| * Object to pass concrete values to fuzzer | ||
| */ | ||
| data class FuzzedConcreteValue( | ||
| val classId: ClassId, | ||
| val value: Any, | ||
| val fuzzedContext: FuzzedContext = FuzzedContext.Unknown, | ||
| ) |
45 changes: 45 additions & 0 deletions
45
utbot-fuzzers/src/main/kotlin/org/utbot/fuzzer/FuzzedContext.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| package org.utbot.fuzzer | ||
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| import org.utbot.framework.plugin.api.ExecutableId | ||
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| /** | ||
| * Context is a bit of information about [FuzzedConcreteValue]'s conditions. | ||
| * | ||
| * For example, it can be: | ||
| * | ||
| * 1. Comparison operations: `a > 2` | ||
| * 2. Method call: `Double.isNaN(2.0)` | ||
| */ | ||
| sealed interface FuzzedContext { | ||
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| object Unknown : FuzzedContext | ||
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| class Call( | ||
| val method: ExecutableId | ||
| ) : FuzzedContext { | ||
| override fun toString(): String { | ||
| return method.toString() | ||
| } | ||
| } | ||
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| enum class Comparison( | ||
| val sign: String | ||
| ) : FuzzedContext { | ||
| EQ("=="), | ||
| NE("!="), | ||
| GT(">"), | ||
| GE(">="), | ||
| LT("<"), | ||
| LE("<="), | ||
| ; | ||
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| fun reverse(): Comparison = when (this) { | ||
| EQ -> NE | ||
| NE -> EQ | ||
| GT -> LE | ||
| LT -> GE | ||
| LE -> GT | ||
| GE -> LT | ||
| } | ||
| } | ||
| } | ||
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35 changes: 35 additions & 0 deletions
35
utbot-fuzzers/src/main/kotlin/org/utbot/fuzzer/mutators/RegexStringModelMutator.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| package org.utbot.fuzzer.mutators | ||
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| import com.github.curiousoddman.rgxgen.RgxGen | ||
| import org.utbot.framework.plugin.api.UtPrimitiveModel | ||
| import org.utbot.fuzzer.FuzzedMethodDescription | ||
| import org.utbot.fuzzer.FuzzedValue | ||
| import org.utbot.fuzzer.ModelMutator | ||
| import org.utbot.fuzzer.providers.RegexFuzzedValue | ||
| import org.utbot.fuzzer.providers.RegexModelProvider | ||
| import kotlin.random.Random | ||
| import kotlin.random.asJavaRandom | ||
|
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| /** | ||
| * Provides different regex value for a concrete regex pattern | ||
| */ | ||
| object RegexStringModelMutator : ModelMutator { | ||
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| override fun mutate( | ||
| description: FuzzedMethodDescription, | ||
| index: Int, | ||
| value: FuzzedValue, | ||
| random: Random | ||
| ): FuzzedValue? { | ||
| if (value is RegexFuzzedValue) { | ||
| val string = RgxGen(value.regex).apply { | ||
| setProperties(RegexModelProvider.rgxGenProperties) | ||
| }.generate(random.asJavaRandom()) | ||
| return RegexFuzzedValue(UtPrimitiveModel(string).mutatedFrom(value) { | ||
| summary = "%var% = mutated regex ${value.regex}" | ||
| }, value.regex) | ||
| } | ||
| return null | ||
| } | ||
|
|
||
| } |
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Java
Comparator<T>interface (and its counterpart in the Kotlin stdlib) hasreversedmethod that returns a comparator with reverse ordering. What do you think about usingreversed()instead ofreverse()here? I think it could be a bit more readable (at least it would be for me -- I used to read 'reverse()` as an in-place operation on collections).