Add ObjectMapper unescaping ASCII control characters when using DTOs #1429
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Pgarrett
changed the title
arcuri82
requested changes
Jan 26, 2026
| import java.nio.file.Path | ||
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| class JavaDtoOutput: JvmDtoOutput() { | ||
| class JavaDtoOutput(val outputFormat: OutputFormat): JvmDtoOutput() { |
Collaborator
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is any special reason to keep outputFormat here as a field? also, in that case, shouldnt we have a init{} block to validate it? (ie throw IllegalArgument if not for Java)
| lines.add("public ObjectMapper create(Type cls, String charset) {") | ||
| lines.indented { | ||
| lines.add("ObjectMapper mapper = new ObjectMapper();") | ||
| lines.add("mapper.registerModule(new Jdk8Module());") |
Collaborator
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this needs some comment explanations
| import java.nio.file.Path | ||
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| class KotlinDtoOutput: JvmDtoOutput() { | ||
| class KotlinDtoOutput(val outputFormat: OutputFormat): JvmDtoOutput() { |
| lines.indented { | ||
| lines.add(".jsonConfig(JsonConfig.jsonConfig().numberReturnType(JsonPathConfig.NumberReturnType.DOUBLE))") | ||
| lines.add(".redirect(redirectConfig().followRedirects(false))") | ||
| if (config.dtoSupportedForPayload() && containsDtos) { |
Collaborator
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need some comments here to explain why this is done
| lines.add(".redirect(redirectConfig().followRedirects(false))") | ||
| if (config.dtoSupportedForPayload() && containsDtos) { | ||
| lines.indented { | ||
| lines.add(".objectMapperConfig(") |
Collaborator
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is this now always applied? so we go through this custom mapper even if there are no issues with the payloads?
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ASCII control characters were being escaped by Jackson when using DTOs. Control characters in a JSON payload generate an invalid payload, which was being tested by EvoMaster. As such, we created a custom object mapper that will not escape the ASCII control characters, allowing for incorrect payloads to be tested.