NPE from BaseJsonValidator.debug while walking JSON schema #1168
Description
This was found while I was creating an issue for #1167. Changing the code to look like the example below and setting Java vmargs to -Dorg.slf4j.simpleLogger.defaultLogLevel=DEBUG was enough to generate the NPE.
... JsonSchemaFactory factory = JsonSchemaFactory.getInstance(SpecVersion.VersionFlag.V7); JsonSchema schema = factory.getSchema(schemaContents); ExecutionContext context = schema.createExecutionContext(); context.getExecutionConfig().setDebugEnabled(true); ValidationResult result = schema.walk(context, jsonContents, InputFormat.JSON, true); result.getValidationMessages().forEach(m -> System.out.println(m));NPE:
Exception in thread "main" java.lang.NullPointerException: Cannot invoke "com.fasterxml.jackson.databind.JsonNode.toString()" because "node" is null at com.networknt.schema.BaseJsonValidator.debug(BaseJsonValidator.java:138) at com.networknt.schema.OneOfValidator.validate(OneOfValidator.java:71) at com.networknt.schema.OneOfValidator.walk(OneOfValidator.java:234) at com.networknt.schema.JsonSchema.walk(JsonSchema.java:1278) at com.networknt.schema.PropertiesValidator.walkSchema(PropertiesValidator.java:197) at com.networknt.schema.PropertiesValidator.validate(PropertiesValidator.java:109) at com.networknt.schema.PropertiesValidator.walk(PropertiesValidator.java:133) at com.networknt.schema.JsonSchema.walk(JsonSchema.java:1278) at com.networknt.schema.JsonSchema.walkAtNodeInternal(JsonSchema.java:1247) at com.networknt.schema.JsonSchema.walk(JsonSchema.java:1098) ...