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Make Spring Java fuzzer fallback to null value when nothing else works #2448

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Jul 26, 2023
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Make Spring Java fuzzer fallback to null value when nothing else works #2448

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920d15a
Make Java fuzzer fallback to `null` value when nothing else works
IlyaMuravjov Jul 25, 2023
1bf3e66
Use `AnyDepthNullValueProvider` only in Spring integration tests
IlyaMuravjov Jul 26, 2023
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2 changes: 2 additions & 0 deletions ...otlin/org/utbot/framework/context/spring/SpringIntegrationTestConcreteExecutionContext.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ import org.utbot.framework.plugin.api.util.utContext
import org.utbot.fuzzer.IdentityPreservingIdGenerator
import org.utbot.fuzzing.JavaValueProvider
import org.utbot.fuzzing.ValueProvider
import org.utbot.fuzzing.providers.AnyDepthNullValueProvider
import org.utbot.fuzzing.providers.FieldValueProvider
import org.utbot.fuzzing.providers.ObjectValueProvider
import org.utbot.fuzzing.providers.anyObjectValueProvider
Expand Down Expand Up @@ -93,6 +94,7 @@ class SpringIntegrationTestConcreteExecutionContext(
.with(springBeanValueProvider)
.with(createSavedEntityValueProviders(relevantRepositories, idGenerator))
.with(createFieldValueProviders(relevantRepositories, idGenerator))
.withFallback(AnyDepthNullValueProvider)
}

private fun createSavedEntityValueProviders(
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15 changes: 15 additions & 0 deletions utbot-java-fuzzing/src/main/kotlin/org/utbot/fuzzing/providers/Objects.kt
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Expand Up @@ -132,6 +132,21 @@ object NullValueProvider : ValueProvider<FuzzedType, FuzzedValue, FuzzedDescript
}
}

/**
* Unlike [NullValueProvider] can generate `null` values at any depth.
*
* Intended to be used as a last fallback.
*/
object AnyDepthNullValueProvider : ValueProvider<FuzzedType, FuzzedValue, FuzzedDescription> {

override fun accept(type: FuzzedType) = type.classId.isRefType

override fun generate(
description: FuzzedDescription,
type: FuzzedType
) = sequenceOf<Seed<FuzzedType, FuzzedValue>>(Seed.Simple(nullFuzzedValue(classClassId)))
}

/**
* Finds and create object from implementations of abstract classes or interfaces.
*/
Expand Down