From 0eecbf5d7c4c5503627fcfffb4eb8b1f03e36203 Mon Sep 17 00:00:00 2001
From: altro3 <alexuyt@gmail.com>
Date: Wed, 4 Sep 2024 21:13:29 +0700
Subject: [PATCH] Fix process additionalProperties = false (#1748)

See: https://github.com/swagger-api/swagger-core/issues/4316
---
 .../visitor/SchemaDefinitionUtils.java        |  6 +-
 .../visitor/OpenApiSchemaFieldSpec.groovy     | 67 +++++++++++++++++++
 2 files changed, 71 insertions(+), 2 deletions(-)

diff --git a/openapi/src/main/java/io/micronaut/openapi/visitor/SchemaDefinitionUtils.java b/openapi/src/main/java/io/micronaut/openapi/visitor/SchemaDefinitionUtils.java
index 41118d3157..eb745ccd1d 100644
--- a/openapi/src/main/java/io/micronaut/openapi/visitor/SchemaDefinitionUtils.java
+++ b/openapi/src/main/java/io/micronaut/openapi/visitor/SchemaDefinitionUtils.java
@@ -1265,9 +1265,11 @@ public static Map<CharSequence, Object> toValueMap(Map<CharSequence, Object> val
                 } else if (key.equals(PROP_ADDITIONAL_PROPERTIES)) {
                     if (io.swagger.v3.oas.annotations.media.Schema.AdditionalPropertiesValue.TRUE.toString().equals(value.toString())) {
                         newValues.put(PROP_ADDITIONAL_PROPERTIES, true);
+                    } else if (io.swagger.v3.oas.annotations.media.Schema.AdditionalPropertiesValue.FALSE.toString().equals(value.toString())) {
+                        newValues.put(PROP_ADDITIONAL_PROPERTIES, false);
+                    }
                         // TODO
 //                    } else if (AdditionalPropertiesValue.USE_ADDITIONAL_PROPERTIES_ANNOTATION.toString().equals(value.toString())) {
-                    }
                 } else if (key.equals(PROP_ONE_TYPES) && isOpenapi31()) {
                     newValues.put(PROP_TYPE, value);
                 } else if (key.equals(PROP_DISCRIMINATOR_PROPERTY)) {
@@ -1939,7 +1941,7 @@ private static void processSchemaAnn(Schema schemaToBind, VisitorContext context
             if (schemaAdditionalProperties == io.swagger.v3.oas.annotations.media.Schema.AdditionalPropertiesValue.TRUE) {
                 schemaToBind.additionalProperties(true);
             } else if (schemaAdditionalProperties == io.swagger.v3.oas.annotations.media.Schema.AdditionalPropertiesValue.FALSE) {
-                schemaToBind.additionalProperties(null);
+                schemaToBind.additionalProperties(false);
             }
         }
 
diff --git a/openapi/src/test/groovy/io/micronaut/openapi/visitor/OpenApiSchemaFieldSpec.groovy b/openapi/src/test/groovy/io/micronaut/openapi/visitor/OpenApiSchemaFieldSpec.groovy
index 5313aacfcf..14426cb52d 100644
--- a/openapi/src/test/groovy/io/micronaut/openapi/visitor/OpenApiSchemaFieldSpec.groovy
+++ b/openapi/src/test/groovy/io/micronaut/openapi/visitor/OpenApiSchemaFieldSpec.groovy
@@ -1189,4 +1189,71 @@ class MyBean {}
         schemas.Car.properties.resourceType
         schemas.Car.properties.selected
     }
+
+    void "test schema additionalProperties = false"() {
+
+        when:
+        buildBeanDefinition('test.MyBean', '''
+package test;
+
+import io.micronaut.core.annotation.Nullable;import io.micronaut.http.annotation.Body;
+import io.micronaut.http.annotation.Controller;
+import io.micronaut.http.annotation.Post;
+import io.micronaut.http.annotation.QueryValue;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import jakarta.validation.Valid;
+import java.io.Serializable;
+import java.util.List;
+
+@Controller
+class HelloController {
+
+    @Post(value = "/search", consumes = "application/json", produces = "application/json")
+    @Operation(summary = "Returns List of Audit Log records based on the matching search criteria", description = "Returns list of Audit Log records matching the search critera. SLA:500", responses = {
+            @ApiResponse(responseCode = "200", description = "Successful retrieval of list of Audit Log records matching the search criteria", content = {
+                    @Content(mediaType = "application/json", schema = @Schema(implementation = AuditLogDTO.class)) }),
+            @ApiResponse(responseCode = "400", description = "Invalid input provided", content = { @Content(mediaType = "application/json")}), 
+            @ApiResponse(responseCode = "401", description = "Unauthorized", content = { @Content(mediaType = "application/json")}),})            
+    public List<AuditLogDTO> searchAuditLog(
+            @Parameter(description = "Page number for the search results", example = "1", required = false) @QueryValue(value = "page", defaultValue = "1") @Nullable Integer page,
+            @Parameter(description = "Size of the page", example = "1", required = false) @QueryValue(value = "size", defaultValue = "100") @Nullable Integer size,
+            @Parameter(description = "Audit Search criteria", example = "1", required = true) @Body @Valid AuditSearchCriteria auditSearchCriteria) {
+        return null;
+    }
+
+}
+
+enum TestEnum {
+    VAL1, VAL2
+}
+
+@Schema(additionalProperties = Schema.AdditionalPropertiesValue.FALSE)
+class AuditSearchCriteria implements Serializable {
+        
+}
+
+record AuditLogDTO(
+    TestEnum field1,
+    @io.swagger.v3.oas.annotations.media.Schema(deprecated = true) TestEnum field2
+) {
+}
+
+@jakarta.inject.Singleton
+class MyBean {}
+''')
+        then: "the state is correct"
+        Utils.testReference != null
+
+        when: "The OpenAPI is retrieved"
+        def openApi = Utils.testReference
+        def schemas = openApi.components.schemas
+
+        then: "the components are valid"
+        schemas.AuditSearchCriteria.additionalProperties != null
+        schemas.AuditSearchCriteria.additionalProperties == false
+    }
 }